Mod deflate：在 httpd.conf 中启用压缩后服务器占用更多资源

Question

我在 httpd.conf 中添加了以下 sn-p

 # mod_deflate configuration
<IfModule mod_deflate.c>

# Restrict compression to these MIME types
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/x-javascript
AddOutputFilterByType DEFLATE text/javascript
AddOutputFilterByType DEFLATE text/css

# Level of compression (Highest 9 - Lowest 1)
DeflateCompressionLevel 1

# Netscape 4.x has some problems.
BrowserMatch ^Mozilla/4 gzip-only-text/html

# Netscape 4.06-4.08 have some more problems
BrowserMatch ^Mozilla/4\.0[678] no-gzip

# MSIE masquerades as Netscape, but it is fine
BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html

</IfModule>

压缩工作非常好，但是服务器响应请求的时间太长，我也检查了top 命令，它显示 99% 的 cpu 使用率。 我怎样才能使这种压缩更有效？或任何其他可能有助于进一步分析的命令？

Answer 1

如果响应是可缓存的，则添加 mod_expires 和 mod_cache+mod_disk_cache 以动态缓存压缩的变体。