squid命中率查看
[root@localhost squid]# squidclient -p 80 mgr:info
HTTP/1.0 200 OK
Server: squid/3.1.10
Mime-Version: 1.0
Date: Mon, 26 Nov 2012 14:41:51 GMT
Content-Type: text/plain
Expires: Mon, 26 Nov 2012 14:41:51 GMT
Last-Modified: Mon, 26 Nov 2012 14:41:51 GMT
X-Cache: MISS from cache.361way.com
X-Cache-Lookup: MISS from cache.361way.com:80
Via: 1.0 cache.361way.com (squid/3.1.10)
Connection: close
Squid Object Cache: Version 3.1.10
Start Time: Mon, 26 Nov 2012 13:18:50 GMT
Current Time: Mon, 26 Nov 2012 14:41:51 GMT
Connection information for squid:
Number of clients accessing cache: 34
Number of HTTP requests received: 774
Number of ICP messages received: 0
Number of ICP messages sent: 0
Number of queued ICP replies: 0
Number of HTCP messages received: 0
Number of HTCP messages sent: 0
Request failure ratio: 0.00
Average HTTP requests per minute since start: 9.3 #每分钟http request的数量
Average ICP messages per minute since start: 0.0
Select loop called: 637052 times, 7.818 ms avg
Cache information for squid:
Hits as % of all requests: 5min: 77.1%, 60min: 58.8% #Cache Request命中率
Hits as % of bytes sent: 5min: 28.4%, 60min: 20.4% #Cache Byte命中率
Memory hits as % of hit requests: 5min: 43.9%, 60min: 32.0%
Disk hits as % of hit requests: 5min: 0.0%, 60min: 0.2%
Storage Swap size: 328 KB #存放cache的硬盘使用大小
Storage Swap capacity: 0.0% used, 100.0% free
Storage Mem size: 436 KB #存放cache的内存使用大小
Storage Mem capacity: 0.1% used, 99.9% free
Mean Object Size: 6.56 KB
Requests given to unlinkd: 2
Median Service Times (seconds) 5 min 60 min:
HTTP Requests (All): 0.06286 0.06286
Cache Misses: 0.32154 0.20843
Cache Hits: 0.00000 0.00000
Near Hits: 0.06286 0.06286
Not-Modified Replies: 0.00000 0.00000
DNS Lookups: 0.00000 0.00000
ICP Queries: 0.00000 0.00000
Resource usage for squid:
UP Time: 4980.301 seconds
CPU Time: 1.379 seconds
CPU Usage: 0.03%
CPU Usage, 5 minute avg: 0.09%
CPU Usage, 60 minute avg: 0.03%
Process Data Segment Size via sbrk(): 7508 KB
Maximum Resident Size: 59728 KB
Page faults with physical i/o: 0
Memory usage for squid via mallinfo():
Total space in arena: 7640 KB
Ordinary blocks: 7587 KB 61 blks
Small blocks: 0 KB 0 blks
Holding blocks: 1228 KB 5 blks
Free Small blocks: 0 KB
Free Ordinary blocks: 52 KB
Total in use: 8815 KB 99%
Total free: 52 KB 1%
Total size: 8868 KB
Memory accounted for: #内存使用情况
Total accounted: 1253 KB 14%
memPool accounted: 1253 KB 14%
memPool unaccounted: 7614 KB 86%
memPoolAlloc calls: 167272
memPoolFree calls: 169189
File descriptor usage for squid:
Maximum number of file descriptors: 1024 #系统最大file descriptor数
Largest file desc currently in use: 39 #目前使用file descriptor最大值
Number of file desc currently in use: 33 #目前正在使用的file descriptor数
Files queued for open: 0
Available number of file descriptors: 991
Reserved number of file descriptors: 100
Store Disk files open: 0
Internal Data Structures:
77 StoreEntries #Cache中存放的 object 的数量
77 StoreEntries with MemObjects #内存中 object 数量
76 Hot Object Cache Items #热点object 的数量
50 on-disk objects # 硬盘上的object的数量上面的-p后面根的是端口，根据自己具体的情况而定。如果是3128端口，就把上面的80换成3128就行了。另外一些常用的squidclient查询语句如下
squidclient -p 80 mgr:info #取得squid运行状态信息：
squidclient -p 80 mgr:mem #取得squid内存使用情况：
squidclient -p 80 mgr:objects #取得squid已经缓存的列表,使用时要小心，可能会造成squid崩溃：
squidclient -p 80 mgr:diskd #取得squid的磁盘使用情况：
squidclient -p 80 -m PURGE http://www.361way.com #强制更新某个url,即清理某连接的squid