- 论坛徽章:
- 9
|
本帖最后由 mordorwww 于 2013-11-08 09:37 编辑
top - 09:18:44 up 1 day, 18:08, 4 users, load average: 8.66, 7.88, 5.09
Tasks: 235 total, 1 running, 234 sleeping, 0 stopped, 0 zombie
Cpu(s): 2.9%us, 1.4%sy, 0.0%ni, 9.9%id, 85.6%wa, 0.0%hi, 0.2%si, 0.0%st
Mem: 3655840k total, 3572588k used, 83252k free, 2628k buffers
Swap: 3801080k total, 1952048k used, 1849032k free, 526072k cached
如果磁盘占用高,应该是导致CPU等待啊,怎么会导致CPU占用高呢
这个时候ssh 执行个date命令都很慢,ifconfig 看网络流量也很小, 这命令她妈的又不用磁盘IO,怎么还慢
io 统计
[NACS@root]iostat -x
Linux 2.6.32-358.14.1.el6.x86_64 (NACS) 11/08/2013 _x86_64_ (4 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
8.19 0.00 2.65 14.34 0.00 74.83
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util
sda 99.13 347.71 46.87 23.96 2040.21 2972.10 70.77 24.18 341.28 3.34 23.67
dm-0 0.00 0.00 3.71 46.69 432.51 373.50 15.99 27.77 550.86 1.79 9.01
dm-1 0.00 0.00 132.26 123.52 1058.04 988.18 8.00 19.08 74.40 0.81 20.70
dm-2 0.00 0.00 10.06 201.32 549.62 1610.58 10.22 15.77 74.46 0.82 17.44
[NACS@root]iostat -x
Linux 2.6.32-358.14.1.el6.x86_64 (NACS) 11/08/2013 _x86_64_ (4 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
8.19 0.00 2.65 14.34 0.00 74.83
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util
sda 99.13 347.71 46.87 23.96 2040.23 2972.13 70.77 24.18 341.31 3.34 23.67
dm-0 0.00 0.00 3.71 46.69 432.51 373.49 15.99 27.77 550.86 1.79 9.01
dm-1 0.00 0.00 132.26 123.52 1058.06 988.18 8.00 19.11 74.50 0.81 20.70
dm-2 0.00 0.00 10.06 201.32 549.61 1610.56 10.22 15.77 74.46 0.82 17.44
[NACS@root]iostat -x
Linux 2.6.32-358.14.1.el6.x86_64 (NACS) 11/08/2013 _x86_64_ (4 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
8.19 0.00 2.65 14.34 0.00 74.83
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util
sda 99.13 347.71 46.87 23.96 2040.24 2972.20 70.77 24.18 341.31 3.34 23.67
dm-0 0.00 0.00 3.71 46.69 432.50 373.49 15.99 27.77 550.86 1.79 9.01
dm-1 0.00 0.00 132.26 123.52 1058.08 988.17 8.00 19.12 74.68 0.81 20.70
dm-2 0.00 0.00 10.06 201.32 549.61 1610.55 10.22 15.77 74.46 0.82 17.44
[NACS@root]
|
|