那些遇到过的问题

来自某些 ISP 的请求需要很长时间

Rob*_*inJ 4 networking linux firewall nfs isp

我们有一个在虚拟机上运行 PHP 的 Apache 服务器。文档根目录位于用户的主文件夹 ( /home/users/{first letter}/{username}/) 内，并/home/users/安装在 NFS 上。

似乎有什么奇怪的事情发生了。当一些用户请求一个文件（在这个例子中我使用Hondenbol.png）时，它需要很长时间（起初用户认为它根本没有加载）而对于其他用户（对我来说，在这种情况下）它几乎立即加载。

这是该虚拟主机的 Apache 日志文件的一部分。我注意到的唯一奇怪的是 HTTP 状态代码后面的数字，据我所知是这个（来自 Apache 文档）；

2326 (%b)
    The last part indicates the size of the object returned to the client, not including the response headers. If no content was returned to the client, this value will be "-". To log "0" for no content, use %B instead.
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同一个文件应该有这么大的区别吗？或者这与浏览器缓存有关？

root@web:/var/log/apache2/vhost# cat VHOST_USERNAME_USERNAME.sinners.be.log | grep -i bol
IP_USER - - [09/Sep/2014:17:18:34 +0200] "GET /SUBFOLDER/application/img/Hondenbol200.png HTTP/1.1" 404 544 "http://USERNAME.sinners.be/SUBFOLDER/index.php" "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.44 Safari/537.36"
IP_USER - - [09/Sep/2014:17:20:29 +0200] "GET /SUBFOLDER/application/img/Hondenbol200.png HTTP/1.1" 404 544 "http://USERNAME.sinners.be/SUBFOLDER/index.php" "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.44 Safari/537.36"
IP_USER - - [09/Sep/2014:17:43:45 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 200 222132 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.44 Safari/537.36"
IP_USER - - [10/Sep/2014:17:13:05 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 200 222131 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.103 Safari/537.36"
IP_ME - - [20/Sep/2014:13:50:38 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 200 222130 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:13:53:23 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 304 182 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:13:53:41 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 200 222131 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_USER - - [20/Sep/2014:13:53:39 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 200 222131 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.66 Safari/537.36"
IP_USER - - [20/Sep/2014:13:53:38 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 200 222131 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.66 Safari/537.36"
RANDOM_IP - - [20/Sep/2014:13:55:17 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.0" 200 222094 "-" "-"
IP_ME - - [20/Sep/2014:13:56:14 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 304 183 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_ME - - [20/Sep/2014:13:56:15 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 304 182 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_ME - - [20/Sep/2014:13:56:15 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 304 182 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_ME - - [20/Sep/2014:13:56:15 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 304 182 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_USER - - [20/Sep/2014:13:53:39 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 200 222131 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.66 Safari/537.36"
IP_ME - - [20/Sep/2014:13:59:58 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 304 182 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:14:01:04 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 200 222131 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:14:01:38 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 200 222131 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_USER - - [20/Sep/2014:14:02:39 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 200 222130 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.66 Safari/537.36"
IP_USER - - [20/Sep/2014:14:03:17 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 304 183 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.66 Safari/537.36"
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文件：

-rwxr-xr-x  1 USERNAME user 221841 Sep 10 01:22 Hondenbol.png
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root@web:~# uname -a
Linux web 3.14-2-amd64 #1 SMP Debian 3.14.15-2 (2014-08-09) x86_64 GNU/Linux
root@web:~# apache2 -v
Server version: Apache/2.4.10 (Debian)
Server built:   Jul 23 2014 13:15:48
root@web:~# php -v
PHP 5.6.0-1 (cli) (built: Aug 28 2014 13:03:02) 
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2014 Zend Technologies
    with Zend OPcache v7.0.4-dev, Copyright (c) 1999-2014, by Zend Technologies
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我们使用mpm-itk.

更新 1

谢谢，@kasperd。我添加%D到日志文件中，发现有同样问题的同事。我让他（完全）加载有问题的网站几次。

澄清; 页面本身加载良好。只是页面上的图像对某些人来说很麻烦，但它们始终是相同的图像。

记录同事的访问：

IP_OTHER_GUY - - [20/Sep/2014:21:18:38 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 206 339 2602 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:18:38 +0200] "GET /SUBFOLDER/application/img/banner.jpg HTTP/1.1" 206 341 11028 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:18:38 +0200] "GET /SUBFOLDER/application/css/afbeeldingen/template/pattern.png HTTP/1.1" 404 561 984 "http://USERNAME.sinners.be/SUBFOLDER/application/css/style.css" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:18:38 +0200] "GET /SUBFOLDER/application/img/banner.jpg HTTP/1.1" 206 252546 33461847 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:18:38 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 206 184858 61415214 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:33:29 +0200] "GET /SUBFOLDER/ HTTP/1.1" 200 1078 30539 "http://l.facebook.com/lsr.php?u=http%3A%2F%2FUSERNAME.sinners.be%2FSUBFOLDER%2F&ext=1411241671&hash=" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:33:29 +0200] "GET /SUBFOLDER/application/css/afbeeldingen/template/pattern.png HTTP/1.1" 404 561 864 "http://USERNAME.sinners.be/SUBFOLDER/application/css/style.css" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:33:39 +0200] "GET /SUBFOLDER/ HTTP/1.1" 200 1078 30241 "http://l.facebook.com/lsr.php?u=http%3A%2F%2FUSERNAME.sinners.be%2FSUBFOLDER%2F&ext=1411241671&hash=" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:33:39 +0200] "GET /SUBFOLDER/application/css/style.css HTTP/1.1" 200 1304 2659 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:33:39 +0200] "GET /SUBFOLDER/application/css/afbeeldingen/template/pattern.png HTTP/1.1" 404 561 506 "http://USERNAME.sinners.be/SUBFOLDER/application/css/style.css" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:34:04 +0200] "GET /SUBFOLDER/ HTTP/1.1" 200 1078 50469 "http://l.facebook.com/lsr.php?u=http%3A%2F%2FUSERNAME.sinners.be%2FSUBFOLDER%2F&ext=1411241671&hash=" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:34:04 +0200] "GET /SUBFOLDER/application/css/style.css HTTP/1.1" 200 1304 1663 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:34:04 +0200] "GET /SUBFOLDER/application/css/afbeeldingen/template/pattern.png HTTP/1.1" 404 562 8751 "http://USERNAME.sinners.be/SUBFOLDER/application/css/style.css" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:34:04 +0200] "GET /SUBFOLDER/application/img/banner.jpg HTTP/1.1" 200 310256 48043620 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:34:04 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 200 222130 61975581 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:35:07 +0200] "GET /favicon.ico HTTP/1.1" 404 506 2452 "-" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:36:08 +0200] "GET /SUBFOLDER/ HTTP/1.1" 200 1078 33676 "http://l.facebook.com/lsr.php?u=http%3A%2F%2FUSERNAME.sinners.be%2FSUBFOLDER%2F&ext=1411241671&hash=" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:36:08 +0200] "GET /SUBFOLDER/application/css/style.css HTTP/1.1" 200 1304 3005 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:36:08 +0200] "GET /SUBFOLDER/application/css/afbeeldingen/template/pattern.png HTTP/1.1" 404 562 8426 "http://USERNAME.sinners.be/SUBFOLDER/application/css/style.css" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
IP_OTHER_GUY - - [20/Sep/2014:21:36:08 +0200] "GET /SUBFOLDER/application/img/banner.jpg HTTP/1.1" 200 310256 60066766 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
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记录我的访问：

IP_ME - - [20/Sep/2014:21:32:59 +0200] "GET /SUBFOLDER/ HTTP/1.1" 200 1078 55236 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:32:59 +0200] "GET /SUBFOLDER/application/css/afbeeldingen/template/pattern.png HTTP/1.1" 404 561 1154 "http://USERNAME.sinners.be/SUBFOLDER/application/css/style.css" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:32:59 +0200] "GET /favicon.ico HTTP/1.1" 404 506 216 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:32:59 +0200] "GET /favicon.ico HTTP/1.1" 404 506 183 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:16 +0200] "GET /SUBFOLDER/ HTTP/1.1" 200 1078 51083 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:16 +0200] "GET /SUBFOLDER/application/css/style.css HTTP/1.1" 200 1304 2006 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:16 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 304 182 774 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:16 +0200] "GET /SUBFOLDER/application/css/afbeeldingen/template/pattern.png HTTP/1.1" 404 561 717 "http://USERNAME.sinners.be/SUBFOLDER/application/css/style.css" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:16 +0200] "GET /SUBFOLDER/application/img/banner.jpg HTTP/1.1" 304 183 9232 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:16 +0200] "GET /SUBFOLDER/ HTTP/1.1" 200 1077 9386 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:17 +0200] "GET /SUBFOLDER/application/css/style.css HTTP/1.1" 200 1304 657 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:17 +0200] "GET /SUBFOLDER/application/img/banner.jpg HTTP/1.1" 304 182 488 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:17 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 304 183 8270 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:17 +0200] "GET /SUBFOLDER/application/css/afbeeldingen/template/pattern.png HTTP/1.1" 404 561 392 "http://USERNAME.sinners.be/SUBFOLDER/application/css/style.css" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:17 +0200] "GET /SUBFOLDER/ HTTP/1.1" 200 1077 9150 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:17 +0200] "GET /SUBFOLDER/application/css/style.css HTTP/1.1" 200 1304 1028 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:17 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 304 182 777 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:17 +0200] "GET /SUBFOLDER/application/img/banner.jpg HTTP/1.1" 304 182 487 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:17 +0200] "GET /SUBFOLDER/application/css/afbeeldingen/template/pattern.png HTTP/1.1" 404 561 340 "http://USERNAME.sinners.be/SUBFOLDER/application/css/style.css" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:18 +0200] "GET /SUBFOLDER/ HTTP/1.1" 200 1077 8646 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:18 +0200] "GET /SUBFOLDER/application/css/style.css HTTP/1.1" 200 1304 746 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:18 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 304 182 287 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:18 +0200] "GET /SUBFOLDER/application/img/banner.jpg HTTP/1.1" 304 182 699 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:18 +0200] "GET /SUBFOLDER/application/css/afbeeldingen/template/pattern.png HTTP/1.1" 404 561 311 "http://USERNAME.sinners.be/SUBFOLDER/application/css/style.css" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:18 +0200] "GET /SUBFOLDER/ HTTP/1.1" 200 1077 7981 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:18 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 304 182 349 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:18 +0200] "GET /SUBFOLDER/application/img/banner.jpg HTTP/1.1" 304 182 238 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:18 +0200] "GET /SUBFOLDER/application/css/style.css HTTP/1.1" 200 1304 2150 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:18 +0200] "GET /SUBFOLDER/application/css/afbeeldingen/template/pattern.png HTTP/1.1" 404 561 291 "http://USERNAME.sinners.be/SUBFOLDER/application/css/style.css" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:19 +0200] "GET /SUBFOLDER/ HTTP/1.1" 200 1077 22099 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:19 +0200] "GET /SUBFOLDER/application/css/style.css HTTP/1.1" 200 1304 822 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:19 +0200] "GET /SUBFOLDER/application/img/Hondenbol.png HTTP/1.1" 304 182 345 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:19 +0200] "GET /SUBFOLDER/application/img/banner.jpg HTTP/1.1" 304 182 217 "http://USERNAME.sinners.be/SUBFOLDER/" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
IP_ME - - [20/Sep/2014:21:37:19 +0200] "GET /SUBFOLDER/application/css/afbeeldingen/template/pattern.png HTTP/1.1" 404 561 265 "http://USERNAME.sinners.be/SUBFOLDER/application/css/style.css" "Mozilla/5.0 (X11; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0"
Run Code Online (Sandbox Code Playgroud)

如您所见，我访问的加载/处理时间要低得多。
所有遇到此问题的人似乎都将 Telenet 作为他们的互联网服务提供商。拥有 Belgacom（这是这里唯一的其他选择）的人似乎没有这个问题。不过，这可能是巧合。这只是我注意到的；我不确定这是否相关。

更新 2

供参考，测试页；http://robinj1995.sinners.be/test/index_en.php

第一个字段集（块）在这里是最相关的。

更新 3

我们尝试使用非 Apache Web 服务器（GitLab 的 Unicorn）并遇到了同样的问题。问题似乎与网络/防火墙问题有关，而不是我们的 Apache 配置问题。

我们的防火墙和/或踏脚石是运行 Debian 稳定版的服务器，使用iptables.

kas*_*erd 5

状态码304表示缓存副本仍然是最新的，并且没有数据发送到客户端。您会看到所有带有状态代码的请求的字节数都很小，304并且对于带有状态代码的所有请求的文件大小都差不多200。

但是，如果您有不错的连接速度，传输 200KB 的静态数据应该只需要几分之一秒。所以这可能不是你正在寻找的瓶颈。

为了调试 Apache 性能问题，我发现%D将LogFormat. 这将告诉您处理请求需要多少微秒。

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