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个固定页面访问时需要的调用数。如:
#ps –ef|grep http
#strace –p http_pid
accept(18, 0xFFBEFA50, 0xFFBEFA74, 1) = 3
fcntl(24, F_SETLKW, 0x001D0E10) = 0
sigaction(SIGUSR1, 0xFFBEF908, 0xFFBEF98 = 0
getsockname(3, 0xFFBEFA60, 0xFFBEFA74, 1) = 0
setsockopt(3, 6, 1, 0xFFBEF9C4, 4, 1) = 0
read(3, " G E T / c a s e i n c".., 4096) = 590
sigaction(SIGUSR1, 0xFFBED800, 0xFFBED880) = 0
time() = 1043377552
stat("/docroot/osc-new/www/caseincident/listCase.php", 0x0022BF5 = 0
umask(077) = 0
umask(0) = 077
setitimer(ITIMER_PROF, 0xFFBEF628, 0x00000000) = 0
sigaction(SIGPROF, 0xFFBEF4F8, 0xFFBEF57 = 0
sigprocmask(SIG_UNBLOCK, 0xFFBEF618, 0x00000000) = 0
getsockopt(6, 65535, 8192, 0xFFBE67B0, 0xFFBE67AC, 0) = 0
setsockopt(6, 65535, 8192, 0xFFBE67B0, 4, 0) = 0
setitimer(ITIMER_PROF, 0xFFBEF788, 0x00000000) = 0
sigaction(SIGUSR1, 0xFFBEF908, 0xFFBEF98 = 0
read(3, 0x001E5BC0, 4096) (sleeping...)
附录一、采用 mod_gzip 加速Apache
说明:本附录为全文引用,时间限制,未经测试。
我们知道 mod_gzip 是用来在服务器端把客户请求的内容压缩后发送给客户端的一个 Apache 模块。本站的 Zope 通过 FastCGI 来实现和 Apache 的结合,Apache 是解析 HTML 页面的服务程序。安装好 mod_gzip 后就即能压缩普通静态页面也能压缩 Zope 文档。
一、安装
http://www.hyperspacecommunications.com/products/mod_gzip.html
页面上有 mod_gzip 的二进制码版本和源码下载。如果你使用前者的话,直接把文件拷贝到 Apache Home 的 libexec 目录下就可以了。下载 mod_gzip.c 后,如果你的 Apache 用 DSO 模式安装的话,用下面简单的命令就可以安装了:
# /www/bin/apxs -i -a -c mod_gzip.c
二、配置
安装完毕以后把下列配置加入httpd.conf :
# mod_gzip 配置
LoadModule gzip_module libexec/mod_gzip.so
AddModule mod_gzip.c
mod_gzip_on Yes
mod_gzip_minimum_file_size 1002
mod_gzip_maximum_file_size 0
mod_gzip_maximum_inmem_size 60000
mod_gzip_item_include mime "application/x-httpd-php"
mod_gzip_item_include mime "text/*"
# 压缩 Zope 的内容:
mod_gzip_item_include file "[^.]*$"
mod_gzip_item_include mime "httpd/unix-directory"
mod_gzip_dechunk Yes
mod_gzip_temp_dir "/tmp"
mod_gzip_keep_workfiles No
mod_gzip_item_include file ".php$"
mod_gzip_item_include file ".txt$"
mod_gzip_item_include file ".html$"
mod_gzip_item_exclude file ".css$"
mod_gzip_item_exclude file ".js$"
并添加下面的行:
LogFormat "%h %l %u %t "%r" %>s %b "%{Referer}i" "%{User-Agent}i" mod_gzip: %{mod_gzip_compression_ratio}npct." mod_gzip
把对应虚拟主机配置中的日志文件参数修改为 mod_gzip
三、压缩效果
这样,我们得到类似以下的日志文件:
61.169.41.13 - - [02/Mar/2002:01:24:29 -0500] "GET /pipermail/freelamp/2002-March/000026.html HTTP/1.1" 200 72848 "http://www.freelamp.com/pipermail/freelamp/2002-March/subject.html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Q312461; NetCaptor 6.5.0)" mod_gzip: 54pct.
61.169.41.13 - - [02/Mar/2002:01:24:52 -0500] "GET /new/publish/1003233602/index_html HTTP/1.1" 200 4304 "http://www.freelamp.com/new/publish/search?subject=Zope&op=articles" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Q312461; NetCaptor 6.5.0)" mod_gzip: 65pct.
61.169.41.13 - - [02/Mar/2002:01:24:53 -0500] "GET /new/publish/global_css HTTP/1.1" 200 629 "http://www.freelamp.com/new/publish/1003233602/index_html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Q312461; NetCaptor 6.5.0)" mod_gzip: 73pct.
61.169.41.13 - - [02/Mar/2002:01:24:54 -0500] "GET /new/publish/Images/sitetitle_img HTTP/1.1" 304 0 "http://www.freelamp.com/new/publish/1003233602/index_html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Q312461; NetCaptor 6.5.0)" mod_gzip: 0pct.
61.169.41.13 - - [02/Mar/2002:01:26:21 -0500] "GET /new/publish/index_html HTTP/1.1" 200 7317 "http://www.freelamp.com/new/publish/1003233602/index_html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Q312461; NetCaptor 6.5.0)" mod_gzip: 80pct.
61.169.41.13 - - [02/Mar/2002:01:26:22 -0500] "GET /new/publish/global_css HTTP/1.1" 200 629 "http://www.freelamp.com/new/publish/index_html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Q312461; NetCaptor 6.5.0)" mod_gzip: 73pct.
61.169.41.13 - - [02/Mar/2002:01:26:24 -0500] "GET /new/publish/TopicImages/Tutorial HTTP/1.1" 304 0 "http://www.freelamp.com/new/publish/index_html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Q312461; NetCaptor 6.5.0)" mod_gzip: 0pct.
61.169.41.13 - - [02/Mar/2002:01:26:24 -0500] "GET /new/publish/LinkImages/jsp001_img HTTP/1.1" 304 0 "http://www.freelamp.com/new/publish/index_html" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Q312461; NetCaptor 6.5.0)" mod_gzip: 0pct.
我们看到 mod_gzip 已经对 .html 和那些没有点的文件作了压缩,压缩率达到了 70-80%。但是,mod_gzip 对图片文件不作压缩。
四、总结
结合,mod_gzip 和缓冲工具等,我们完全可以使一台配置较低的 PC 有足够的能力处理各种 HTML/CGI 等的请求。(T002)
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| 原始作者:佚名 |
录入时间:2007-3-31 2:17:11 |
| 信息来源:不详 |
投稿信箱:itqoo@126.com |
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