w

w/uptime #查看系统负载

cat /proc/cpuinfo #查看CPU核数

vmstat #监控系统状态

[root@localhost ~]# w	 10:41:30 up  9:20,  2 users,  load average: 0.00, 0.01, 0.05	USER     TTY        LOGIN@   IDLE   JCPU   PCPU WHAT	root     pts/0     01:23    6:59m  0.32s  0.32s -bash	root     pts/1     10:41    2.00s  0.04s  0.01s w

系统时间	启动时间	登录用户	系统负载（1分钟，5分钟，15分钟）登录用户	登录方式	登录时间

为1是最理想的，

[root@localhost ~]# cat /proc/cpuinfo	processor	: 0	vendor_id	: GenuineIntel	cpu family	: 6	model		: 60	model name	: Intel(R) Core(TM) i7-4710MQ CPU @ 2.50GHz	stepping	: 3	microcode	: 0x1e	cpu MHz		: 2501.000	cache size	: 6144 KB	physical id	: 0	siblings	: 2	core id		: 0	cpu cores	: 2	apicid		: 0	initial apicid	: 0	fpu		: yes	fpu_exception	: yes	cpuid level	: 13	wp		: yes	flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc aperfmperf eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm ida arat epb xsaveopt pln pts dtherm fsgsbase tsc_adjust bmi1 avx2 smep bmi2 invpcid	bogomips	: 5002.00	clflush size	: 64	cache_alignment	: 64	address sizes	: 42 bits physical, 48 bits virtual	power management:		processor	: 1	vendor_id	: GenuineIntel	cpu family	: 6	model		: 60	model name	: Intel(R) Core(TM) i7-4710MQ CPU @ 2.50GHz	stepping	: 3	microcode	: 0x1e	cpu MHz		: 2501.000	cache size	: 6144 KB	physical id	: 0	siblings	: 2	core id		: 1	cpu cores	: 2	apicid		: 1	initial apicid	: 1	fpu		: yes	fpu_exception	: yes	cpuid level	: 13	wp		: yes	flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc aperfmperf eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm ida arat epb xsaveopt pln pts dtherm fsgsbase tsc_adjust bmi1 avx2 smep bmi2 invpcid	bogomips	: 5002.00	clflush size	: 64	cache_alignment	: 64	address sizes	: 42 bits physical, 48 bits virtual	power management:

vmstat

[root@localhost ~]# vmstat	procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----	 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st	 1  0      0 1591432    692 110200    0    0     2     0    7    9  0  0 100  0  0

[root@localhost ~]# vmstat 1	procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----	 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st	 1  0      0 1591292    692 110232    0    0     2     0    7    9  0  0 100  0  0	 0  0      0 1591300    692 110232    0    0     0     0   27   35  0  0 100  0  0	 0  0      0 1591300    692 110232    0    0     0     0   22   21  0  0 100  0  0	 0  0      0 1591300    692 110232    0    0     0     0   14   13  0  0 100  0  0	 0  0      0 1591300    692 110232    0    0     0     0   20   18  0  0 100  0  0	 0  0      0 1591300    692 110232    0    0     0     8   18   21  0  0 100  0  0	 0  0      0 1591300    692 110232    0    0     0     0   22   20  0  0 100  0  0^C[root@localhost ~]# vmstat 1 5	procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----	 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st	 1  0      0 1591340    692 110232    0    0     2     0    7    9  0  0 100  0  0	 0  0      0 1591332    692 110232    0    0     0     0   24   32  0  0 100  0  0	 0  0      0 1591300    692 110232    0    0     0     0   16   13  0  0 100  0  0	 0  0      0 1591300    692 110232    0    0     0     0   19   20  0  0 100  0  0	 0  0      0 1591300    692 110232    0    0     0     0   19   16  0  0 100  0  0

r为run，表示进程处于运行的状态b为block，表示CPU被某些硬件设备阻断swpd交换空间，表示物理内存不够用freecachesi读入so读出bi写入，若大于5000则需要注意bo写出，若大于5000则需要注意incsus用户级别，若长时间大于50表示系统资源不足syidwa若数字越大，表示CPU资源不足st

us、sy、id和wa相加等于100%

top

top查看进程使用资源情况

top -c #显示详细的进程信息

top -bn1 #静态显示所有进程

q退出，数字1显示所有CPU，大写字母M按内存使用排序

大写字母P按CPU使用排序

[root@localhost ~]# top	#每3秒更新一次	top - 11:27:16 up 10:06,  1 user,  load average: 0.00, 0.01, 0.05	Tasks: 361 total,   1 running, 360 sleeping,   0 stopped,   0 zombie	%Cpu(s):  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st	KiB Mem:   1870784 total,   277496 used,  1593288 free,      692 buffers	KiB Swap:  2097148 total,        0 used,  2097148 free.   110344 cached Mem	   PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                      	  3524 root      20   0  123836   1804   1156 R   0.3  0.1   0:00.05 top                          	     1 root      20   0   43824   6440   3888 S   0.0  0.3   0:03.00 systemd                      	     2 root      20   0       0      0      0 S   0.0  0.0   0:00.05 kthreadd                     	     3 root      20   0       0      0      0 S   0.0  0.0   0:00.10 ksoftirqd/0                  	     5 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 kworker/0:0H                 	     7 root      rt   0       0      0      0 S   0.0  0.0   0:00.16 migration/0                  	     8 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcu_bh                       	     9 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/0                      	    10 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/1                      	    11 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/2                      	    12 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/3

361 total指361个进程1 running指有1个进程正在运行360 sleeping有360个进程处于临时睡眠状态0 stopped指进程停止0 zombie僵尸进程，指子进程由父进程回收，没有父进程的则变成了僵尸进程RES为占用物理内存的大小，单位为K

[root@localhost ~]# top	-c	#更加详细的command显示	top - 11:40:19 up 10:19,  1 user,  load average: 0.00, 0.01, 0.05	Tasks: 360 total,   1 running, 359 sleeping,   0 stopped,   0 zombie	%Cpu(s):  0.0 us,  0.2 sy,  0.0 ni, 99.8 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st	KiB Mem:   1870784 total,   277520 used,  1593264 free,      692 buffers	KiB Swap:  2097148 total,        0 used,  2097148 free.   110344 cached Mem	   PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                      	  3522 root      20   0       0      0      0 S   0.3  0.0   0:00.03 [kworker/1:1]                	  3529 root      20   0  123864   1892   1232 R   0.3  0.1   0:00.11 top -c                       	     1 root      20   0   43824   6440   3888 S   0.0  0.3   0:03.01 /usr/lib/systemd/systemd --s+	     2 root      20   0       0      0      0 S   0.0  0.0   0:00.06 [kthreadd]                   	     3 root      20   0       0      0      0 S   0.0  0.0   0:00.10 [ksoftirqd/0]                	     5 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 [kworker/0:0H]               	     7 root      rt   0       0      0      0 S   0.0  0.0   0:00.16 [migration/0]                	     8 root      20   0       0      0      0 S   0.0  0.0   0:00.00 [rcu_bh]                     	     9 root      20   0       0      0      0 S   0.0  0.0   0:00.00 [rcuob/0]                    	    10 root      20   0       0      0      0 S   0.0  0.0   0:00.00 [rcuob/1]                    	    11 root      20   0       0      0      0 S   0.0  0.0   0:00.00 [rcuob/2]

[root@localhost ~]# top -bn1	#静态显示所有进程	top - 11:42:03 up 10:20,  1 user,  load average: 0.16, 0.05, 0.06	Tasks: 360 total,   1 running, 359 sleeping,   0 stopped,   0 zombie	%Cpu(s):  0.0 us,  0.0 sy,  0.0 ni, 99.9 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st	KiB Mem:   1870784 total,   277404 used,  1593380 free,      692 buffers	KiB Swap:  2097148 total,        0 used,  2097148 free.   110344 cached Mem	   PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND	  3530 root      20   0  123836   1620   1056 R  12.8  0.1   0:00.02 top		 1 root      20   0   43824   6440   3888 S   0.0  0.3   0:03.01 systemd		 2 root      20   0       0      0      0 S   0.0  0.0   0:00.06 kthreadd		 3 root      20   0       0      0      0 S   0.0  0.0   0:00.10 ksoftirqd/0		 5 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 kworker/0:0H		 7 root      rt   0       0      0      0 S   0.0  0.0   0:00.16 migration/0		 8 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcu_bh		 9 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/0		10 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/1		11 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/2		12 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/3		13 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/4		14 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/5		15 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/6		16 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/7		17 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/8		18 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/9		19 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/10		20 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/11		21 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/12		22 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/13		23 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/14		24 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/15		25 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/16		26 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/17		27 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/18		28 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/19		29 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/20		30 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/21		31 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/22		32 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/23		33 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/24		34 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/25		35 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/26		36 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/27		37 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/28		38 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/29		39 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/30		40 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/31		41 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/32		42 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/33		43 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/34		44 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/35		45 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/36		46 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/37		47 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/38		48 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/39		49 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/40		50 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/41		51 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/42		52 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/43		53 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/44		54 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/45		55 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/46		56 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/47		57 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/48		58 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/49		59 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/50		60 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/51		61 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/52		62 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/53		63 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/54		64 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/55		65 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/56		66 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/57		67 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/58		68 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/59		69 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/60		70 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/61		71 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/62		72 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/63		73 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/64		74 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/65		75 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/66		76 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/67		77 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/68		78 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/69		79 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/70		80 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/71		81 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/72		82 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/73		83 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/74		84 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/75		85 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/76		86 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/77		87 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/78		88 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/79		89 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/80		90 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/81		91 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/82		92 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/83		93 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/84		94 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/85		95 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/86		96 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/87		97 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/88		98 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/89		99 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/90	   100 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/91	   101 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/92	   102 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/93	   103 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/94	   104 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/95	   105 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/96	   106 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/97	   107 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/98	   108 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/99	   109 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/100	   110 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/101	   111 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/102	   112 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/103	   113 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/104	   114 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/105	   115 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/106	   116 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/107	   117 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/108	   118 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/109	   119 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/110	   120 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/111	   121 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/112	   122 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/113	   123 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/114	   124 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/115	   125 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/116	   126 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/117	   127 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/118	   128 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/119	   129 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/120	   130 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/121	   131 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/122	   132 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/123	   133 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/124	   134 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/125	   135 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/126	   136 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuob/127	   137 root      20   0       0      0      0 S   0.0  0.0   0:00.83 rcu_sched	   138 root      20   0       0      0      0 S   0.0  0.0   0:00.89 rcuos/0	   139 root      20   0       0      0      0 S   0.0  0.0   0:01.24 rcuos/1	   140 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/2	   141 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/3	   142 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/4	   143 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/5	   144 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/6	   145 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/7	   146 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/8	   147 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/9	   148 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/10	   149 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/11	   150 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/12	   151 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/13	   152 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/14	   153 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/15	   154 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/16	   155 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/17	   156 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/18	   157 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/19	   158 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/20	   159 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/21	   160 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/22	   161 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/23	   162 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/24	   163 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/25	   164 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/26	   165 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/27	   166 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/28	   167 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/29	   168 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/30	   169 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/31	   170 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/32	   171 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/33	   172 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/34	   173 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/35	   174 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/36	   175 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/37	   176 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/38	   177 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/39	   178 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/40	   179 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/41	   180 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/42	   181 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/43	   182 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/44	   183 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/45	   184 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/46	   185 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/47	   186 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/48	   187 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/49	   188 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/50	   189 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/51	   190 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/52	   191 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/53	   192 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/54	   193 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/55	   194 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/56	   195 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/57	   196 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/58	   197 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/59	   198 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/60	   199 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/61	   200 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/62	   201 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/63	   202 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/64	   203 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/65	   204 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/66	   205 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/67	   206 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/68	   207 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/69	   208 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/70	   209 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/71	   210 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/72	   211 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/73	   212 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/74	   213 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/75	   214 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/76	   215 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/77	   216 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/78	   217 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/79	   218 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/80	   219 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/81	   220 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/82	   221 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/83	   222 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/84	   223 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/85	   224 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/86	   225 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/87	   226 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/88	   227 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/89	   228 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/90	   229 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/91	   230 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/92	   231 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/93	   232 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/94	   233 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/95	   234 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/96	   235 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/97	   236 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/98	   237 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/99	   238 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/100	   239 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/101	   240 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/102	   241 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/103	   242 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/104	   243 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/105	   244 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/106	   245 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/107	   246 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/108	   247 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/109	   248 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/110	   249 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/111	   250 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/112	   251 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/113	   252 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/114	   253 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/115	   254 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/116	   255 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/117	   256 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/118	   257 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/119	   258 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/120	   259 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/121	   260 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/122	   261 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/123	   262 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/124	   263 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/125	   264 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/126	   265 root      20   0       0      0      0 S   0.0  0.0   0:00.00 rcuos/127	   266 root      rt   0       0      0      0 S   0.0  0.0   0:00.24 watchdog/0	   267 root      rt   0       0      0      0 S   0.0  0.0   0:00.23 watchdog/1	   268 root      rt   0       0      0      0 S   0.0  0.0   0:00.51 migration/1	   269 root      20   0       0      0      0 S   0.0  0.0   0:00.07 ksoftirqd/1	   271 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 kworker/1:0H	   272 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 khelper	   273 root      20   0       0      0      0 S   0.0  0.0   0:00.00 kdevtmpfs	   274 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 netns	   275 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 writeback	   276 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 kintegrityd	   277 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 bioset	   278 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 kblockd	   279 root      20   0       0      0      0 S   0.0  0.0   0:00.00 khubd	   280 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 md	   282 root      20   0       0      0      0 S   0.0  0.0   0:26.02 kworker/0:1	   284 root      20   0       0      0      0 S   0.0  0.0   0:00.00 kswapd0	   285 root      25   5       0      0      0 S   0.0  0.0   0:00.00 ksmd	   286 root      39  19       0      0      0 S   0.0  0.0   0:00.17 khugepaged	   287 root      20   0       0      0      0 S   0.0  0.0   0:00.00 fsnotify_mark	   288 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 crypto	   297 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 kthrotld	   298 root      20   0       0      0      0 S   0.0  0.0   0:01.68 kworker/u256:1	   299 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 kmpath_rdacd	   300 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 kpsmoused	   320 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 deferwq	   345 root      20   0       0      0      0 S   0.0  0.0   0:00.03 kauditd	   386 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 ata_sff	   387 root      20   0       0      0      0 S   0.0  0.0   0:00.01 scsi_eh_0	   388 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 scsi_tmf_0	   390 root      20   0       0      0      0 S   0.0  0.0   0:00.00 scsi_eh_1	   392 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 scsi_tmf_1	   394 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 mpt_poll_0	   396 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 mpt/0	   404 root      20   0       0      0      0 S   0.0  0.0   0:00.00 scsi_eh_2	   405 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 scsi_tmf_2	   407 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 ttm_swap	   425 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 xfsalloc	   426 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 xfs_mru_cache	   427 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 xfslogd	   428 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 xfs-data/sda3	   429 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 xfs-conv/sda3	   430 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 xfs-cil/sda3	   431 root       0 -20       0      0      0 S   0.0  0.0   0:00.12 kworker/0:1H	   432 root      20   0       0      0      0 S   0.0  0.0   0:01.04 xfsaild/sda3	   506 root      20   0   36796   2592   2288 S   0.0  0.1   0:00.53 systemd-journal	   535 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 rpciod	   537 root      20   0   46104   5080   2700 S   0.0  0.3   0:00.27 systemd-udevd	   538 root      20   0  342028   5584   2468 S   0.0  0.3   0:00.01 lvmetad	   645 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 xfs-data/sda1	   646 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 xfs-conv/sda1	   647 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 xfs-cil/sda1	   648 root      20   0       0      0      0 S   0.0  0.0   0:00.00 xfsaild/sda1	   650 root      16  -4   51232   1824   1344 S   0.0  0.1   0:00.09 auditd	   696 root      20   0  217560   3876   2448 S   0.0  0.2   0:00.12 rsyslogd	   698 root      20   0  565520  16404   5852 S   0.0  0.9   0:05.16 tuned	   699 root      20   0   26392   1720   1416 S   0.0  0.1   0:00.16 systemd-logind	   702 avahi     20   0   28092   1704   1416 S   0.0  0.1   0:00.19 avahi-daemon	   704 dbus      20   0  100484   1924   1416 S   0.0  0.1   0:00.83 dbus-daemon	   705 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 kdmflush	   706 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 bioset	   713 avahi     20   0   27980    448    216 S   0.0  0.0   0:00.00 avahi-daemon	   719 root      20   0  197232   1916   1384 S   0.0  0.1   0:00.00 gssproxy	   730 root      20   0  126340   1696   1064 S   0.0  0.1   0:00.51 crond	   735 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 kworker/1:1H	   736 root      20   0  110048    836    704 S   0.0  0.0   0:00.02 agetty	   808 root      20   0  461032   9216   7260 S   0.0  0.5   0:01.54 NetworkManager	   953 polkitd   20   0  530084  10840   4880 S   0.0  0.6   0:00.10 polkitd	  1327 root      20   0   83028   3568   2724 S   0.0  0.2   0:00.02 sshd	  1657 root      20   0    6492    340    220 S   0.0  0.0   0:00.40 iprupdate	  1658 root      20   0    6492    340    224 S   0.0  0.0   0:00.40 iprinit	  1732 root      20   0   39132    320    224 S   0.0  0.0   0:00.00 iprdump	  2359 root      20   0   91772   2184   1152 S   0.0  0.1   0:00.30 master	  2361 postfix   20   0   91944   3932   2936 S   0.0  0.2   0:00.09 qmgr	  2439 rpc       20   0   64892   1460    868 S   0.0  0.1   0:00.11 rpcbind	  2452 rpcuser   20   0   44568   1768    924 S   0.0  0.1   0:00.00 rpc.statd	  2453 root      20   0   19324    396    200 S   0.0  0.0   0:00.00 rpc.idmapd	  2454 root      20   0   44924   2012   1044 S   0.0  0.1   0:00.01 rpc.mountd	  2464 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 nfsd4	  2465 root       0 -20       0      0      0 S   0.0  0.0   0:00.00 nfsd4_callbacks	  2466 root      20   0       0      0      0 S   0.0  0.0   0:00.00 lockd	  2469 root      20   0       0      0      0 S   0.0  0.0   0:00.00 nfsd	  2470 root      20   0       0      0      0 S   0.0  0.0   0:00.00 nfsd	  2471 root      20   0       0      0      0 S   0.0  0.0   0:00.00 nfsd	  2472 root      20   0       0      0      0 S   0.0  0.0   0:00.01 nfsd	  2473 root      20   0       0      0      0 S   0.0  0.0   0:00.04 nfsd	  2474 root      20   0       0      0      0 S   0.0  0.0   0:00.00 nfsd	  2475 root      20   0       0      0      0 S   0.0  0.0   0:00.03 nfsd	  2476 root      20   0       0      0      0 S   0.0  0.0   0:00.07 nfsd	  2481 root      20   0       0      0      0 S   0.0  0.0   0:01.75 kworker/u256:2	  3454 root      20   0  139144   5072   3852 S   0.0  0.3   0:00.20 sshd	  3458 root      20   0  116188   2932   1768 S   0.0  0.2   0:00.09 bash	  3521 postfix   20   0   91876   3912   2916 S   0.0  0.2   0:00.01 pickup	  3522 root      20   0       0      0      0 S   0.0  0.0   0:00.03 kworker/1:1	  3525 root      20   0       0      0      0 S   0.0  0.0   0:00.00 kworker/1:0	  3527 root      20   0       0      0      0 S   0.0  0.0   0:00.01 kworker/0:0	  3528 root      20   0       0      0      0 S   0.0  0.0   0:00.01 kworker/0:2

sar

sar -n DEV #网卡流量

sar -q #系统负载

sar -b #磁盘读写

sar -f /var/log/sa/sa/ #历史文件

[root@localhost ~]# yum install -y sysstat	Loaded plugins: fastestmirror	base                                                                        | 3.6 kB  00:00:00     	epel/x86_64/metalink                                                        | 4.9 kB  00:00:00     	epel                                                                        | 4.7 kB  00:00:00     	extras                                                                      | 3.4 kB  00:00:00     	updates                                                                     | 3.4 kB  00:00:00     	(1/3): epel/x86_64/group_gz                                                 | 266 kB  00:00:01     	(2/3): epel/x86_64/updateinfo                                               | 851 kB  00:00:02     	(3/3): epel/x86_64/primary_db                                               | 6.1 MB  00:01:06     	Determining fastest mirrors	 * epel: mirrors.tongji.edu.cn	Resolving Dependencies	--> Running transaction check	---> Package sysstat.x86_64 0:10.1.5-12.el7 will be installed	--> Processing Dependency: libsensors.so.4()(64bit) for package: sysstat-10.1.5-12.el7.x86_64	--> Running transaction check	---> Package lm_sensors-libs.x86_64 0:3.4.0-4.20160601gitf9185e5.el7 will be installed	--> Finished Dependency Resolution	Dependencies Resolved	===================================================================================================	 Package                 Arch           Version                                 Repository    Size	===================================================================================================	Installing:	 sysstat                 x86_64         10.1.5-12.el7                           base         310 k	Installing for dependencies:	 lm_sensors-libs         x86_64         3.4.0-4.20160601gitf9185e5.el7          base          41 k	Transaction Summary	===================================================================================================	Install  1 Package (+1 Dependent package)	Total download size: 351 k	Installed size: 1.2 M	Downloading packages:	(1/2): sysstat-10.1.5-12.el7.x86_64.rpm                                     | 310 kB  00:00:00     	(2/2): lm_sensors-libs-3.4.0-4.20160601gitf9185e5.el7.x86_64.rpm            |  41 kB  00:00:01     	---------------------------------------------------------------------------------------------------	Total                                                              227 kB/s | 351 kB  00:00:01     	Running transaction check	Running transaction test	Transaction test succeeded	Running transaction	  Installing : lm_sensors-libs-3.4.0-4.20160601gitf9185e5.el7.x86_64                           1/2 	  Installing : sysstat-10.1.5-12.el7.x86_64                                                    2/2 	  Verifying  : sysstat-10.1.5-12.el7.x86_64                                                    1/2 	  Verifying  : lm_sensors-libs-3.4.0-4.20160601gitf9185e5.el7.x86_64                           2/2 	Installed:	  sysstat.x86_64 0:10.1.5-12.el7                                                                   	Dependency Installed:	  lm_sensors-libs.x86_64 0:3.4.0-4.20160601gitf9185e5.el7                                          	Complete!

每个10分钟才会生成/var/log/sa/sa日期 #最多保留一个月

[root@localhost ~]# sar	Linux 3.10.0-123.el7.x86_64 (localhost.localdomain) 	11/27/2017 	_x86_64_	(2 CPU)	03:00:01 PM     CPU     %user     %nice   %system   %iowait    %steal     %idle	03:10:01 PM     all      0.00      0.00      0.05      0.00      0.00     99.95	03:20:01 PM     all      0.00      0.00      0.05      0.00      0.00     99.95	Average:        all      0.00      0.00      0.05      0.00      0.00     99.95

[root@localhost ~]# sar -n DEV	Linux 3.10.0-123.el7.x86_64 (localhost.localdomain) 	11/27/2017 	_x86_64_	(2 CPU)	03:00:01 PM     IFACE   rxpck/s   txpck/s    rxkB/s    txkB/s   rxcmp/s   txcmp/s  rxmcst/s	03:10:01 PM eno16777736      0.48      0.00      0.03      0.00      0.00      0.00      0.00	03:10:01 PM        lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00	03:20:01 PM eno16777736      0.46      0.00      0.03      0.00      0.00      0.00      0.00	03:20:01 PM        lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00	03:30:01 PM eno16777736      0.90      0.25      0.06      0.06      0.00      0.00      0.00	03:30:01 PM        lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00	Average:    eno16777736      0.61      0.09      0.04      0.02      0.00      0.00      0.00	Average:           lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00[root@localhost ~]# sar -n DEV 1	#则每个1秒则返回网卡流量	Linux 3.10.0-123.el7.x86_64 (localhost.localdomain) 	11/27/2017 	_x86_64_	(2 CPU)	03:42:03 PM     IFACE   rxpck/s   txpck/s    rxkB/s    txkB/s   rxcmp/s   txcmp/s  rxmcst/s	03:42:04 PM eno16777736      1.00      0.00      0.06      0.00      0.00      0.00      0.00	03:42:04 PM        lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00	03:42:04 PM     IFACE   rxpck/s   txpck/s    rxkB/s    txkB/s   rxcmp/s   txcmp/s  rxmcst/s	03:42:05 PM eno16777736      2.00      1.00      0.12      0.38      0.00      0.00      0.00	03:42:05 PM        lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00	^C	03:42:05 PM     IFACE   rxpck/s   txpck/s    rxkB/s    txkB/s   rxcmp/s   txcmp/s  rxmcst/s	03:42:06 PM eno16777736      6.78      6.78      0.47      1.18      0.00      0.00      0.00	03:42:06 PM        lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00	Average:        IFACE   rxpck/s   txpck/s    rxkB/s    txkB/s   rxcmp/s   txcmp/s  rxmcst/s	Average:    eno16777736      2.70      1.93      0.18      0.42      0.00      0.00      0.00	Average:           lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00

第一列为时间，第二列为网卡名字，第三列rxpck/s上千为正常，达到万则要注意

[root@localhost ~]# sar -n DEV 1 10	Linux 3.10.0-123.el7.x86_64 (localhost.localdomain) 	11/27/2017 	_x86_64_	(2 CPU)	04:17:28 PM     IFACE   rxpck/s   txpck/s    rxkB/s    txkB/s   rxcmp/s   txcmp/s  rxmcst/s	04:17:29 PM eno16777736      0.00      0.00      0.00      0.00      0.00      0.00      0.00	04:17:29 PM        lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00	04:17:29 PM     IFACE   rxpck/s   txpck/s    rxkB/s    txkB/s   rxcmp/s   txcmp/s  rxmcst/s	04:17:30 PM eno16777736      1.00      1.00      0.06      0.38      0.00      0.00      0.00	04:17:30 PM        lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00	04:17:30 PM     IFACE   rxpck/s   txpck/s    rxkB/s    txkB/s   rxcmp/s   txcmp/s  rxmcst/s	04:17:31 PM eno16777736      1.00      1.00      0.06      0.38      0.00      0.00      0.00	04:17:31 PM        lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00	04:17:31 PM     IFACE   rxpck/s   txpck/s    rxkB/s    txkB/s   rxcmp/s   txcmp/s  rxmcst/s	04:17:32 PM eno16777736      3.00      2.00      0.22      0.49      0.00      0.00      0.00	04:17:32 PM        lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00	^C	04:17:32 PM     IFACE   rxpck/s   txpck/s    rxkB/s    txkB/s   rxcmp/s   txcmp/s  rxmcst/s	04:17:33 PM eno16777736      3.09      4.12      0.23      0.72      0.00      0.00      0.00	04:17:33 PM        lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00	Average:        IFACE   rxpck/s   txpck/s    rxkB/s    txkB/s   rxcmp/s   txcmp/s  rxmcst/s	Average:    eno16777736      1.61      1.61      0.11      0.39      0.00      0.00      0.00	Average:           lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00

[root@localhost ~]# sar -q 1 10	Linux 3.10.0-123.el7.x86_64 (localhost.localdomain) 	11/27/2017 	_x86_64_	(2 CPU)	04:41:22 PM   runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15   blocked	04:41:23 PM         1       383      0.00      0.01      0.05         0	04:41:24 PM         0       383      0.00      0.01      0.05         0	04:41:25 PM         1       383      0.00      0.01      0.05         0	04:41:26 PM         1       383      0.00      0.01      0.05         0	04:41:27 PM         1       383      0.00      0.01      0.05         0	04:41:28 PM         0       383      0.00      0.01      0.05         0	^C	04:41:28 PM         0       383      0.00      0.01      0.05         0	Average:            1       383      0.00      0.01      0.05         0[root@localhost ~]# sar -q -f /var/log/sa/sa27 	Linux 3.10.0-123.el7.x86_64 (localhost.localdomain) 	11/27/2017 	_x86_64_	(2 CPU)	03:00:01 PM   runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15   blocked	03:10:01 PM         1       383      0.00      0.01      0.05         0	03:20:01 PM         0       382      0.00      0.01      0.05         0	03:30:01 PM         0       383      0.00      0.01      0.05         0	03:40:01 PM         0       383      0.00      0.01      0.05         0	03:50:01 PM         0       382      0.00      0.01      0.05         0	04:00:02 PM         0       383      0.00      0.01      0.05         0	04:10:01 PM         0       382      0.00      0.01      0.05         0	04:20:01 PM         0       383      0.00      0.01      0.05         0	04:30:01 PM         1       383      0.00      0.01      0.05         0	04:40:01 PM         0       383      0.00      0.01      0.05         0	Average:            0       383      0.00      0.01      0.05         0

[root@localhost ~]# sar -b	Linux 3.10.0-123.el7.x86_64 (localhost.localdomain) 	11/27/2017 	_x86_64_	(2 CPU)	03:00:01 PM       tps      rtps      wtps   bread/s   bwrtn/s	03:10:01 PM      0.06      0.00      0.06      0.00      0.42	03:20:01 PM      0.03      0.00      0.03      0.00      0.21	03:30:01 PM      0.10      0.00      0.10      0.01      0.74	03:40:01 PM      0.03      0.00      0.03      0.00      0.19	03:50:01 PM      0.03      0.00      0.03      0.00      0.25	04:00:02 PM      0.04      0.00      0.04      0.00      0.31	04:10:01 PM      0.04      0.00      0.04      0.00      0.25	04:20:01 PM      0.04      0.00      0.04      0.00      0.31	04:30:01 PM      0.06      0.00      0.06      0.00      0.43	04:40:01 PM      0.04      0.00      0.04      0.00      0.29	Average:         0.05      0.00      0.05      0.00      0.34[root@localhost ~]# sar -b 1 5	Linux 3.10.0-123.el7.x86_64 (localhost.localdomain) 	11/27/2017 	_x86_64_	(2 CPU)	04:45:30 PM       tps      rtps      wtps   bread/s   bwrtn/s	04:45:31 PM      0.00      0.00      0.00      0.00      0.00	04:45:32 PM      0.00      0.00      0.00      0.00      0.00	04:45:33 PM      0.00      0.00      0.00      0.00      0.00	04:45:34 PM      0.00      0.00      0.00      0.00      0.00	04:45:35 PM      0.00      0.00      0.00      0.00      0.00	Average:         0.00      0.00      0.00      0.00      0.00

nload命令

[root@localhost ~]# yum install -y epel-release

32位centos7 不支持epel-release

[root@localhost ~]# yum install -y nload	Loaded plugins: fastestmirror	Loading mirror speeds from cached hostfile	 * epel: mirrors.tongji.edu.cn	Resolving Dependencies	--> Running transaction check	---> Package nload.x86_64 0:0.7.4-4.el7 will be installed	--> Finished Dependency Resolution	Dependencies Resolved	===================================================================================================	 Package              Arch                  Version                      Repository           Size	===================================================================================================	Installing:	 nload                x86_64                0.7.4-4.el7                  epel                 70 k	Transaction Summary	===================================================================================================	Install  1 Package	Total download size: 70 k	Installed size: 176 k	Downloading packages:	warning: /var/cache/yum/x86_64/7/epel/packages/nload-0.7.4-4.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID 352c64e5: NOKEY	Public key for nload-0.7.4-4.el7.x86_64.rpm is not installed	nload-0.7.4-4.el7.x86_64.rpm                                                |  70 kB  00:00:01     	Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7	Importing GPG key 0x352C64E5:	 Userid     : "Fedora EPEL (7) 
    
     "	 Fingerprint: 91e9 7d7c 4a5e 96f1 7f3e 888f 6a2f aea2 352c 64e5	 Package    : epel-release-7-9.noarch (@extras)	 From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7	Running transaction check	Running transaction test	Transaction test succeeded	Running transaction	  Installing : nload-0.7.4-4.el7.x86_64                                                        1/1 	  Verifying  : nload-0.7.4-4.el7.x86_64                                                        1/1 	Installed:	  nload.x86_64 0:0.7.4-4.el7                                                                       	Complete!

Device eno16777736 [192.168.9.134] (1/2):	===================================================================================================	Incoming:											Curr: 1.39 kBit/s											Avg: 1.23 kBit/s											Min: 720.00 Bit/s											Max: 4.16 kBit/s											Ttl: 10.15 MByte	Outgoing:											Curr: 8.35 kBit/s											Avg: 8.41 kBit/s											Min: 4.27 kBit/s											Max: 12.51 kBit/s											Ttl: 965.00 kByte

转载于:https://my.oschina.net/u/3892756/blog/3056534

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