Hi, I have this strange problem started from tonight in my squid box. Actually everything was working ok, but I was trying to do some port forwarding things with iptables. But suddendly i realized that my cache hits has drop after i restarted the networking service quite a few times. At first i wasn't worried, but after an hour I got worried. Although calamaris is showing more byte hit % , unfortunately cachemgr.cgi is showing wrong value i guess. My operating system is a Ubuntu 10.10 server. Squid Object Cache: Version 3.1.10 Start Time:Sat, 15 Jan 2011 22:17:57 GMT Current Time:Sat, 15 Jan 2011 23:09:17 GMT Connection information for squid: Number of clients accessing cache: 100 Number of HTTP requests received: 60132 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: 1171.5 Average ICP messages per minute since start: 0.0 Select loop called: 5143660 times, 0.599 ms avg Cache information for squid: Hits as % of all requests: 5min: 12.3%, 60min: 18.8% Hits as % of bytes sent: 5min: -12.5%, 60min: -1.9% Memory hits as % of hit requests: 5min: 12.4%, 60min: 4.3% Disk hits as % of hit requests: 5min: 50.6%, 60min: 64.5% Storage Swap size: 33978424 KB Storage Swap capacity: 64.6% used, 35.4% free Storage Mem size: 101084 KB Storage Mem capacity: 99.7% used, 0.3% free Mean Object Size: 16.65 KB Requests given to unlinkd: 2605 Median Service Times (seconds) 5 min 60 min: HTTP Requests (All): 7.79421 0.61549 Cache Misses: 26.97993 0.80651 Cache Hits: 0.01387 0.00919 Near Hits: 0.58309 0.46965 Not-Modified Replies: 0.00000 0.00000 DNS Lookups: 0.51867 0.16304 ICP Queries: 0.00000 0.00000 Resource usage for squid: UP Time: 3079.731 seconds CPU Time: 115.800 seconds CPU Usage: 3.76% CPU Usage, 5 minute avg: 3.81% CPU Usage, 60 minute avg: 3.76% Process Data Segment Size via sbrk(): 497056 KB Maximum Resident Size: 2051920 KB Page faults with physical i/o: 0 Memory usage for squid via mallinfo(): Total space in arena: 497188 KB Ordinary blocks: 495769 KB 9420 blks Small blocks: 0 KB 0 blks Holding blocks: 36380 KB 9 blks Free Small blocks: 0 KB Free Ordinary blocks: 1418 KB Total in use: 532149 KB 100% Total free: 1418 KB 0% Total size: 533568 KB Memory accounted for: Total accounted: 404284 KB 76% memPool accounted: 404284 KB 76% memPool unaccounted: 129283 KB 24% memPoolAlloc calls: 17894845 memPoolFree calls: 18064591 File descriptor usage for squid: Maximum number of file descriptors: 65535 Largest file desc currently in use: 1409 Number of file desc currently in use: 1255 Files queued for open: 0 Available number of file descriptors: 64280 Reserved number of file descriptors: 100 Store Disk files open: 16 Internal Data Structures: 2041007 StoreEntries 8633 StoreEntries with MemObjects 8141 Hot Object Cache Items 2040138 on-disk objects Please help to understand why I am getting negative hits all of a sudden? And even if it caused by something else, why isn't it be solved after an hour when so many clients are online. Regards, Shishir
