Home  >  Q&A  >  body text

linux 负载很高.

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_leeringa_lee2718 days ago615

reply all(2)I'll reply

  • 大家讲道理

    大家讲道理2017-04-17 11:58:15

    You need to add the configuration of your machine. For example, the number of CPU cores, memory, etc. It seems that your load is not very high, only 4. The wa of the CPU is relatively high, indicating that the CPU is waiting for disk IO. Use iostat to check the disk IO status

    reply
    0
  • 黄舟

    黄舟2017-04-17 11:58:15

    The load is not high; install iotop and then execute

    #iotop
    

    Post.


      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
    

    It seems to be an nginx problem. I don’t know much about this thing, I only know about apache. So see if this article is helpful to you: http://www.oschina.net/question/54100_30419

    reply
    0
  • Cancelreply