linux 负载很高.

Question

使用SSH命令操作也没感觉很慢.就是访问
top-16:10:43up50min,2users,loadaverage:4.72,4.58,4.35
Tasks:114total,1running,113sleeping,0stopped,0zombie
%Cpu(s):18.7us,3.0sy,0.0ni,37.5id,40.6wa,0.2hi,0.0si,0.0st
KiBMem:7693560total,1957232used,5736328free,47460buffers
KiBSwap:0total,0used,0free.1291540cachedMem
TotalDISKREAD:0.00B/s|TotalDISKWRITE:0.00B/s
ActualDISKREAD:0.00B/s|ActualDISKWRITE:0.00B/s
TIDPRIOUSERDISKREADDISKWRITESWAPINIO>COMMAND
5972be/4www0.00B/s0.00B/s0.00%99.99%nginx:workerprocess
1be/4root0.00B/s0.00B/s0.00%0.00%init
2be/4root0.00B/s0.00B/s0.00%0.00%[kthreadd]
3be/4root0.00B/s0.00B/s0.00%0.00%[ksoftirqd/0]
4be/4root0.00B/s0.00B/s0.00%0.00%[kworker/0:0]
5be/0root0.00B/s0.00B/s0.00%0.00%[kworker/0:0H]
7be/4root0.00B/s0.00B/s0.00%0.00%[rcu_sched]
8be/4root0.00B/s0.00B/s0.00%0.00%[rcuos/0]
9be/4root0.00B/s0.00B/s0.00%0.00%[rcuos/1]
10be/4root0.00B/s0.00B/s0.00%0.00%[rcuos/2]
11be/4root0.00B/s0.00B/s0.00%0.00%[rcuos/3]
12be/4root0.00B/s0.00B/s0.00%0.00%[rcu_bh]
13be/4root0.00B/s0.00B/s0.00%0.00%[rcuob/0]
14be/4root0.00B/s0.00B/s0.00%0.00%[rcuob/1]
15be/4root0.00B/s0.00B/s0.00%0.00%[rcuob/2]
16be/4root0.00B/s0.00B/s0.00%0.00%[rcuob/3]
17rt/4root0.00B/s0.00B/s0.00%0.00%[migration/0]
18rt/4root0.00B/s0.00B/s0.00%0.00%[watchdog/0]
19rt/4root0.00B/s0.00B/s0.00%0.00%[watchdog/1]
20rt/4root0.00B/s0.00B/s0.00%0.00%[migration/1]
21be/4root0.00B/s0.00B/s0.00%0.00%[ksoftirqd/1]
22be/4root0.00B/s0.00B/s0.00%0.00%[kworker/1:0]
23be/0root0.00B/s0.00B/s0.00%0.00%[kworker/1:0H]
24rt/4root0.00B/s0.00B/s0.00%0.00%[watchdog/2]
25rt/4root0.00B/s0.00B/s0.00%0.00%[migration/2]
26be/4root0.00B/s0.00B/s0.00%0.00%[ksoftirqd/2]
27be/4root0.00B/s0.00B/s0.00%0.00%[kworker/2:0]
28be/0root0.00B/s0.00B/s0.00%0.00%[kworker/2:0H]
29rt/4root0.00B/s0.00B/s0.00%0.00%[watchdog/3]
30rt/4root0.00B/s0.00B/s0.00%0.00%[migration/3]
31be/4root0.00B/s0.00B/s0.00%0.00%[ksoftirqd/3]
32be/4root0.00B/s0.00B/s0.00%0.00%[kworker/3:0]
33be/0root0.00B/s0.00B/s0.00%0.00%[kworker/3:0H]
34be/0root0.00B/s0.00B/s0.00%0.00%[khelper]
35be/4root0.00B/s0.00B/s0.00%0.00%[kdevtmpfs]
36be/0root0.00B/s0.00B/s0.00%0.00%[netns]
37be/4root0.00B/s0.00B/s0.00%0.00%[xenwatch]
38be/4root0.00B/s0.00B/s0.00%0.00%[xenbus]
39be/0root0.00B/s0.00B/s0.00%0.00%[writeback]
40be/0root0.00B/s0.00B/s0.00%0.00%[kintegrityd]
41be/0root0.00B/s0.00B/s0.00%0.00%[bioset]
42be/0root0.00B/s0.00B/s0.00%0.00%[kworker/u9:0]
43be/0root0.00B/s0.00B/s0.00%0.00%[kblockd]
44be/4root0.00B/s0.00B/s0.00%0.00%[kworker/1:1]
45be/0root0.00B/s0.00B/s0.00%0.00%[ata_sff]
46be/4root0.00B/s0.00B/s0.00%0.00%[khubd]
47be/0root0.00B/s0.00B/s0.00%0.00%[md]
48be/0root0.00B/s0.00B/s0.00%0.00%[devfreq_wq]
CPU型号[4核]Intel(R)Xeon(R)CPUE5-2680v2@2.80GHz|频率:2793.304|二级缓存:25600KB|Bogomips:5586.60×4
内存使用状况
内存参数解读物理内存：共7.337GB,已用0.948GB,空闲6.389GB,使用率12.92%
Cache化内存为0.239GB,使用率3.25%|Buffers缓冲为0.052GB
真实内存使用0.657GB,真实内存空闲6.68GB,使用率8.96%
系统平均负载5.954.894.701/172
Linux3.13.0-29-generic(ip-172-31-8-92)09/26/2014_x86_64_(4CPU)
avg-cpu:%user%nice%system%iowait%steal%idle
15.470.003.4236.550.1644.40
Device:tpskB_read/skB_wrtn/skB_readkB_wrtn
xvdap120.5765.311718.472681017054072