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
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
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