Squid因为文件句柄用完不响应

今天发现服务器流量突然降下来了，查看服务器发现squid建立了大量连接。查看squid的cache日志，发现以下信息

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2011/10/19 09:34:13| client_side.cc(2980) okToAccept: WARNING! Your cache is running out of filedescriptors

解决方法：
squid各个版本有差异，squid/3.1.3 不支持配置文件中添加配置项：max_filedesc或max_filedescriptors，需要在编译时添加参数。

squid 3.1.3:

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  --with-filedescriptors=NUMBER
                          Force squid to support NUMBER filedescriptors

查看Squid相关状态

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[root@cmccbook squid]# /byread/bin/squid/bin/squidclient -h 192.168.3.147 mgr:info|grep file
        Maximum number of file descriptors:   1024
        Largest file desc currently in use:    200
        Number of file desc currently in use:  188
        Available number of file descriptors:  836
        Reserved number of file descriptors:   100
        Store Disk files open:                 173