linux 负载很高.
ringa_lee
ringa_lee 2017-04-17 11:56:15
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使用SSH 命令操作也没感觉 很慢.就是访问
top - 16:10:43 up 50 min, 2 users, load average: 4.72, 4.58, 4.35
Tasks: 114 total, 1 running, 113 sleeping, 0 stopped, 0 zombie
%Cpu(s): 18.7 us, 3.0 sy, 0.0 ni, 37.5 id, 40.6 wa, 0.2 hi, 0.0 si, 0.0 st
KiB Mem: 7693560 total, 1957232 used, 5736328 free, 47460 buffers
KiB Swap: 0 total, 0 used, 0 free. 1291540 cached Mem

Total DISK READ : 0.00 B/s | Total DISK WRITE : 0.00 B/s Actual DISK READ: 0.00 B/s | Actual DISK WRITE: 0.00 B/s TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND 5972 be/4 www 0.00 B/s 0.00 B/s 0.00 % 99.99 % nginx: worker process 1 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % init 2 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kthreadd] 3 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [ksoftirqd/0] 4 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/0:0] 5 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/0:0H] 7 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcu_sched] 8 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuos/0] 9 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuos/1] 10 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuos/2] 11 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuos/3] 12 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcu_bh] 13 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuob/0] 14 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuob/1] 15 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuob/2] 16 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuob/3] 17 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [migration/0] 18 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [watchdog/0] 19 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [watchdog/1] 20 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [migration/1] 21 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [ksoftirqd/1] 22 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/1:0] 23 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/1:0H] 24 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [watchdog/2] 25 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [migration/2] 26 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [ksoftirqd/2] 27 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/2:0] 28 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/2:0H] 29 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [watchdog/3] 30 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [migration/3] 31 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [ksoftirqd/3] 32 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/3:0] 33 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/3:0H] 34 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [khelper] 35 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kdevtmpfs] 36 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [netns] 37 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [xenwatch] 38 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [xenbus] 39 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [writeback] 40 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kintegrityd] 41 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [bioset] 42 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/u9:0] 43 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kblockd] 44 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/1:1] 45 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [ata_sff] 46 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [khubd] 47 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [md] 48 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [devfreq_wq] CPU型号 [4核] Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz | 频率:2793.304 | 二级缓存:25600 KB | Bogomips:5586.60 ×4 内存使用状况 内存参数解读 物理内存:共 7.337 GB , 已用 0.948 GB , 空闲 6.389 GB , 使用率 12.92% Cache化内存为 0.239 GB , 使用率 3.25 % | Buffers缓冲为 0.052 GB 真实内存使用 0.657 GB , 真实内存空闲 6.68 GB , 使用率 8.96 % 系统平均负载 5.95 4.89 4.70 1/172 Linux 3.13.0-29-generic (ip-172-31-8-92) 09/26/2014 _x86_64_ (4 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 15.47 0.00 3.42 36.55 0.16 44.40 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn xvdap1 20.57 65.31 1718.47 268101 7054072
ringa_lee
ringa_lee

ringa_lee

reply all (2)
大家讲道理

你需要补充一下你机器的配置。比如cpu核数,内存啥的。看起来你的负载并不是很高,才4而已,cpu的wa比较高,说明cpu在等待磁盘io。你使用iostat再看一下磁盘io情况

    黄舟

    负载不算高;安装iotop,然后执行

    #iotop

    贴。


    TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND 5972 be/4 www 0.00 B/s 0.00 B/s 0.00 % 99.99 % nginx: worker process

    看起来是nginx 问题,对这个东西咱不了解,只知道点apache。所以看看这个文章是不是对你有帮助吧:http://www.oschina.net/question/54100_30419

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