<pre name="code" class="sql"><pre name="code" class="sql">load average: 576.98, 574.88, 570.81
1216 processes: 1215 sleeping, 1 running , 0 zombie, 0 stopped
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今天压了下虚拟机:
[mysql@master ~]$ top
top - 05:58:41 up 3 days, 19:03, 6 users, load average: 3.36, 1.08, 0.38
Tasks: 134 total, 1 running, 133 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.9%us, 0.7%sy, 0.0%ni, 0.0%id, 96.8%wa, 0.0%hi, 1.6%si, 0.0%st
Mem: 1016928k total, 955616k used, 61312k free, 196k buffers
Swap: 2097144k total, 2097136k used, 8k free, 8964k cached
load average: 3.36, 1.08, 0.38
IO信息:
[mysql@master ~]$ sar -d 1 100
Linux 2.6.32-220.el6.x86_64 (master) 03/17/15 _x86_64_ (2 CPU)
05:59:23 DEV tps rd_sec/s wr_sec/s avgrq-sz avgqu-sz await svctm %util
05:59:24 dev8-0 52.48 6669.31 0.00 127.09 7.89 150.42 18.87 99.01
05:59:24 DEV tps rd_sec/s wr_sec/s avgrq-sz avgqu-sz await svctm %util
05:59:25 dev8-0 230.30 28371.72 0.00 123.19 2.58 11.25 4.21 96.97
05:59:25 DEV tps rd_sec/s wr_sec/s avgrq-sz avgqu-sz await svctm %util
05:59:26 dev8-0 324.04 31530.77 49576.92 250.30 5.04 15.48 2.65 85.96
05:59:26 DEV tps rd_sec/s wr_sec/s avgrq-sz avgqu-sz await svctm %util
05:59:27 dev8-0 126.67 10577.78 38382.22 386.53 11.65 38.04 8.67 109.78
05:59:27 DEV tps rd_sec/s wr_sec/s avgrq-sz avgqu-sz await svctm %util
05:59:28 dev8-0 23.00 2752.00 7184.00 432.00 8.19 584.13 43.48 100.00
await
The average time (in milliseconds) for I/O requests issued to the device to be served. This includes the time spent by the requests in queue and the
time spent servicing them.
磁盘上的I/O请求的平均时间(单位毫秒) ，这个包括时间花费在请求队列上和服务时间
%util
Percentage of CPU time during which I/O requests were issued to the device (bandwidth utilization for the device). Device saturation occurs when this
value is close to 100%.
内存信息:
^Z[mysql@master ~]$ vmstat 1 100
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu-----
r b swpd free buff cache si so bi bo in cs us sy id wa st
3 1 1683912 58252 436 10972 8 24 53 80 16 20 0 0 99 1 0
0 3 1700696 68672 160 6168 32 16784 5152 16784 556 696 6 4 22 67 0
0 4 1725752 67168 148 6044 160 25104 10272 25104 1118 1234 15 8 22 55 0
0 3 1743252 64592 144 7088 32 17504 7372 17504 707 810 9 5 12 75 0
0 2 1743236 68932 144 6324 32 0 1824 0 296 344 1 3 36 60 0
0 2 1743236 65336 144 7408 0 0 1152 0 116 119 1 1 48 51 0
0 3 1767060 50696 152 14192 96 23860 7136 23872 588 889 12 3 20 65 0
0 3 1772712 70220 152 5524 32 5668 3872 5668 735 835 3 6 1 91 0
2 4 1781420 63104 152 8660 32 8720 5600 8724 542 601 4 6 1 88 0
0 3 1808612 67472 148 5512 96 27224 12276 27224 1700 1599 16 11 21 52 0
Swap
si: Amount of memory swapped in from disk (/s).
so: Amount of memory swapped to disk (/s).
si， 数据从 SWAP 读取到 RAM（swap in）的大小，KB 为单位；
so， 数据从 RAM 写到 SWAP（swap out）的大小，KB 为单位。
si表示当前（三秒钟之内）每秒交换回内存（Swap in）的总量，单位为kbytes；so表示当前（三秒钟之内）每秒交换出内存（Swap out）的总量，单位为kbytes。