何度かWebサーバーが停止したので

負荷テストしてみた。

あと、abのテスト結果も・・・。
※abは手元にあるMacbook Proからなので無線経由

$ ab -n 10240 -c 128 http://blog.cecily.jp/
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking blog.cecily.jp (be patient)
Completed 1024 requests
~~~~~snip~~~~~
Finished 10240 requests

Server Software:        cloudflare-nginx
Server Hostname:        blog.cecily.jp
Server Port:            80

Document Path:          /
Document Length:        35704 bytes

Concurrency Level:      128
Time taken for tests:   47.175 seconds
Complete requests:      10240
Failed requests:        0
Write errors:           0
Total transferred:      370193273 bytes
HTML transferred:       365886593 bytes
Requests per second:    217.06 [#/sec] (mean)
Time per request:       589.694 [ms] (mean)
Time per request:       4.607 [ms] (mean, across all concurrent requests)
Transfer rate:          7663.23 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        6  113 337.2     17    3588
Processing:   121  470 474.1    371    7792
Waiting:      105  154 135.6    131    3977
Total:        129  582 591.4    399    7806

Percentage of the requests served within a certain time (ms)
  50%    399
  66%    528
  75%    685
  80%    843
  90%   1380
  95%   1730
  98%   2257
  99%   2944
 100%   7806 (longest request)


とりあえずFailed requestsやWrite errorがないので大丈夫かな・・・。
Webサーバーが停止したのはメモリー不足だったみたいだけど・・・nginxにngx_pagespeedを組み込んだのが問題なのかな?
とりあえずswapを作成してマウントしてみた。。

# dd if=/dev/zero of=/swap.extended bs=1M count=1024
# mkswap /swap.extended
# swapon /swap.extended 
# cat /proc/swaps
Filename				Type		Size	Used	Priority
/swap.extended                          file		1048568	114948	-1
# vi /etc/fstab 
#
# /etc/fstab
# Created by anaconda on Tue Dec 17 15:22:08 2013
~~~~~snip~~~~~
LABEL=DOROOT		/                       ext4    defaults        1 1
tmpfs                   /dev/shm                tmpfs   defaults        0 0
~~~~~snip~~~~~
/swap.extended		swap			swap	defaults	0 0←追加した行

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