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[root@bs2 ~]# top top - 18:08:43 up 149 days, 6:41, 4 users, load average: 396.86, 356.44, 250.94 Tasks: 2776 total, 2 running, 2764 sleeping, 1 stopped, 9 zombie %Cpu(s): 0.8 us, 3.8 sy, 0.0 ni, 6.3 id, 89.1 wa, 0.0 hi, 0.1 si, 0.0 st KiB Mem : 66059044 total, 629988 free, 53493632 used, 11935424 buff/cache KiB Swap: 8191996 total, 0 free, 8191996 used. 7737832 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 45674 root 20 0 0 0 0 R 99.7 0.0 5:18.03 kworker/u289:6 18863 root 20 0 3459280 256908 5816 S 22.7 0.4 6902:42 cadvisor |
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top - 18:06:10 up 149 days, 6:39, 3 users, load average: 322.56, 331.35, 225.97 Tasks: 2788 total, 2 running, 2776 sleeping, 1 stopped, 9 zombie %Cpu(s): 0.7 us, 4.4 sy, 0.0 ni, 6.3 id, 88.5 wa, 0.0 hi, 0.1 si, 0.0 st KiB Mem : 66059044 total, 635152 free, 53491180 used, 11932712 buff/cache KiB Swap: 8191996 total, 0 free, 8191996 used. 7739852 avail Mem |
dmesg大量如下报错：
[四 9月 8 19:24:24 2016] XFS: possible memory allocation deadlock in kmem_alloc (mode:0x250)
解决办法：
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echo 1 > /proc/sys/vm/drop_caches |
效果不佳：
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top - 18:12:59 up 149 days, 6:45, 4 users, load average: 211.63, 320.98, 266.11 Tasks: 2748 total, 2 running, 2741 sleeping, 1 stopped, 4 zombie %Cpu(s): 6.8 us, 15.2 sy, 0.0 ni, 9.2 id, 68.8 wa, 0.0 hi, 0.1 si, 0.0 st KiB Mem : 66059044 total, 2339032 free, 53697124 used, 10022888 buff/cache KiB Swap: 8191996 total, 0 free, 8191996 used. 7518744 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 6778 root 20 0 231840 11548 6740 R 66.9 0.0 63:20.26 php 103487 root 20 0 197984 18040 5444 S 27.2 0.0 1:08.14 python |
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#iostat 5 -m sda avg-cpu: %user %nice %system %iowait %steal %idle 6.29 0.01 15.31 59.91 0.00 18.49 Device: tps MB_read/s MB_wrtn/s MB_read MB_wrtn sda 396.20 1.38 3.11 6 15 |