| 关键词: nbsp squid Cache squidclient Number 数量 记忆体 问题 位址 Request |
基本的使用方法*取得squid运行状态信息: squidclient -p 80 mgr:info*取得squid内存使用情况: squidclient -p 80 mgr:mem*取得squid已经缓存的列表: squidclient -p 80 mgr:objects. use it carefully,it may crash*取得squid的磁盘使用情况: squidclient -p 80 mgr:diskd*强制更新某个url:squidclient -p 80 -m PURGE http://www.php-oa.com/static.php*更多的请查看:squidclient -h 或者 squidclient -p 80 mgr: * 如何得知 squid 执行中的状态? 最简单的方式便是透过浏览器来观察。squid 本身提供一只 cgi 程式,档名为cachemgr.cgi,squid 安装完后将它复制到 Apache 下的 cgi-bin 这个目录下即可使用。 要察看Cache Manager提供的资讯时,请在浏览器的位址列中键入 http://伺服器的名称或IP位址/cgi-bin/cachemgr.cgi 当然,我更加喜欢使用下面的方法 squidclient -t 1 -h localhost -p 80 mgr:inf 这样也行 下面是一些基本内容 Squid Object Cache: Version 2.6 //Squid的版本 HTTP/1.0 200 OKDate: Tue, 11 Mar 2008 16:08:14 GMTContent-Type: text/plainExpires: Tue, 11 Mar 2008 16:08:14 GMTLast-Modified: Tue, 11 Mar 2008 16:08:14 GMTConnection: close Squid Object Cache: Version 2.6.STABLE6Start Time: Tue, 11 Mar 2008 10:21:47 GMTCurrent Time: Tue, 11 Mar 2008 16:08:14 GMTConnection information for squid: Number of clients accessing cache: 2023 使用proxy的电脑数量 Number of HTTP requests received: 81787 客户端http要求数量 Number of ICP messages received: 0 接受到的icp query数量 Number of ICP messages sent: 0 发出icp query数量 Number of queued ICP replies: 0 Request failure ratio: 0.00 Average HTTP requests per minute since start: 236.1 每分钟http request的数量 Average ICP messages per minute since start: 0.0 Select loop called: 24789642 times, 0.839 ms avgCache information for squid: Request Hit Ratios: 5min: 99.6%, 60min: 98.7% Cache Request命中率 Byte Hit Ratios: 5min: 100.0%, 60min: 100.0% Cache Byte命中率 Request Memory Hit Ratios: 5min: 1.6%, 60min: 1.2% Request Disk Hit Ratios: 5min: 82.0%, 60min: 90.5% Storage Swap size: 7723212 KB 存放cache的磁碟使用量 Storage Mem size: 7992 KB 存放cache的记忆体使用量 Mean Object Size: 264.01 KB Requests given to unlinkd: 279Median Service Times (seconds) 5 min 60 min: HTTP Requests (All): 2.94900 3.46762 Cache Misses: 0.03427 0.03427 Cache Hits: 5.06039 4.79440 Near Hits: 0.30459 0.35832 Not-Modified Replies: 0.00179 0.00179 DNS Lookups: 0.00000 0.00000 ICP Queries: 0.00000 0.00000Resource usage for squid: UP Time: 20787.011 seconds CPU Time: 128.799 seconds CPU Usage: 0.62% CPU Usage, 5 minute avg: 0.44% CPU Usage, 60 minute avg: 0.51% Process Data Segment Size via sbrk(): 34292 KB Maximum Resident Size: 0 KB Page faults with physical i/o: 0Memory usage for squid via mallinfo(): Total space in arena: 34424 KB Ordinary blocks: 27031 KB 8599 blks Small blocks: 0 KB 0 blks Holding blocks: 6152 KB 2 blks Free Small blocks: 0 KB Free Ordinary blocks: 7392 KB Total in use: 33183 KB 82% Total free: 7392 KB 18% Total size: 40576 KBMemory accounted for: 记忆体使用状态 Total accounted: 21777 KB memPoolAlloc calls: 15446992 memPoolFree calls: 15337015File descriptor usage for squid: Maximum number of file descriptors: 16384 系统最大file descriptor数 Largest file desc currently in use: 1165 目前使用file descriptor最大值 Number of file desc currently in use: 571 目前正在使用的file descriptor数 Files queued for open: 0 Available number of file descriptors: 15813 Reserved number of file descriptors: 100 Store Disk files open: 266 IO loop method: epollInternal Data Structures: 29315 StoreEntries Cache中存放的快取档案数量 190 StoreEntries with MemObjects 记忆体斗的快取档案数量 176 Hot Object Cache Items 磁碟机中存放的快取档案数量 29253 on-disk objects Proxy 回应的速度很慢时,可能是那里出问题?如何判定问题发生在那里? 网路回应慢有可能是目的网站的问题,也有可能是带宽不足的问题带宽需求是永远根不上使用者的脚步,故在网路出现变慢的问题时,请先以 ping 或 traceroute 指令测试网路的连线状态,如果封包回应很慢或封包遗失率很高,应该是属网路本身的问题,如果测试的结果良好,再继续看是否是 Proxy 出了问题。当然ping也不一定能说明问题 |
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