[squid-users] squid becomes slow when cache_dir is full

> Hello friends.... i have a problem with my squid server ( conf proc:�Intel(R) Celeron(R) E3200 �@ 2.40GHz, 6 GB ram dual-channel 800 Mhz, hdd S-ATA II 500 GB Cache 32 Mb ) , when cache_dir is full squid becomes slow.... i have 60 Mbps bandwith and i can't use only 10-15 Mbps with squid up. Linux kernel is:�2.6.33.7-desktop-2mnb #1 SMP Mon Sep 20 18:19:20 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux
> Squid Configure Options:
> Squid Cache: Version 3.1.12.1-20110503
> configure options: �'--enable-cache-digests' '--disable-icmp' '--disable-delay-pools' '--enable-storeio=ufs,aufs' '--disable-ident-lookups' '--prefix=/squid2' '--enable-removal-policies=heap,lru' '--with-filedescriptors=16384' '--disable-snmp' '--enable-linux-netfilter' '--enable-follow-x-forwarded-for' '--disable-translation' '--with-large-files' --enable-ltdl-convenience

> Squid config:
> cache_dir aufs /mnt/squid 92160 64 512
> cache_mem 2048 MB
> maximum_object_size_in_memory 96 KB
> maximum_object_size 24 MB
> fqdncache_size 4096
> ipcache_size 4096
> ipcache_low 95
> ipcache_high 97

> Squid info:
> Squid Object Cache: Version 3.1.12.1-20110503
> Start Time: � � Wed, 29 Jun 2011 03:56:36 GMT
> Current Time: � Wed, 06 Jul 2011 09:07:51 GMT
> Connection information for squid:
> � � � � Number of clients accessing cache: � � �0
> � � � � Number of HTTP requests received: � � � 7677294
> � � � � 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: � 738.8
> � � � � Average ICP messages per minute since start: � �0.0
> � � � � Select loop called: 886726996 times, 0.703 ms avg
> Cache information for squid:
> � � � � Hits as % of all requests: � � �5min: 36.1%, 60min: 40.9%
> � � � � Hits as % of bytes sent: � � � �5min: 6.4%, 60min: 8.8%
> � � � � Memory hits as % of hit requests: � � � 5min: 41.2%, 60min: 20.1%
> � � � � Disk hits as % of hit requests: 5min: 28.5%, 60min: 33.4%
> � � � � Storage Swap size: � � �90597584 KB
> � � � � Storage Swap capacity: �96.0% used, �4.0% free
> � � � � Storage Mem size: � � � 2076808 KB
> � � � � Storage Mem capacity: � 100.0% used, �0.0% free
> � � � � Mean Object Size: � � � 23.09 KB
> � � � � Requests given to unlinkd: � � �0
> Median Service Times (seconds) �5 min � �60 min:
> � � � � HTTP Requests (All): � 0.04277 �0.04047
> � � � � Cache Misses: � � � � �0.10281 �0.09736
> � � � � Cache Hits: � � � � � �0.00000 �0.00000
> � � � � Near Hits: � � � � � � 0.04519 �0.01955
> � � � � Not-Modified Replies: �0.00000 �0.00000
> � � � � DNS Lookups: � � � � � 0.03696 �0.03696
> � � � � ICP Queries: � � � � � 0.00000 �0.00000
> Resource usage for squid:
> � � � � UP Time: � � � �623475.324 seconds
> � � � � CPU Time: � � � 24039.848 seconds
> � � � � CPU Usage: � � �3.86%
> � � � � CPU Usage, 5 minute avg: � � � �6.34%
> � � � � CPU Usage, 60 minute avg: � � � 4.71%
> � � � � Process Data Segment Size via sbrk(): 3264060 KB
> � � � � Maximum Resident Size: 13229792 KB
> � � � � Page faults with physical i/o: 402
> Memory usage for squid via mallinfo():
> � � � � Total space in arena: �-930112 KB
> � � � � Ordinary blocks: � � � -953352 KB �31436 blks
> � � � � Small blocks: � � � � � � � 0 KB � � �0 blks
> � � � � Holding blocks: � � � � 48364 KB � � �8 blks
> � � � � Free Small blocks: � � � � �0 KB
> � � � � Free Ordinary blocks: � 23240 KB
> � � � � Total in use: � � � � �-904988 KB 103%
> � � � � Total free: � � � � � � 23240 KB -3%
> � � � � Total size: � � � � � �-881748 KB
> Memory accounted for:
> � � � � Total accounted: � � � -1334659 KB 151%
> � � � � memPool accounted: � � 2859645 KB -324%
> � � � � memPool unaccounted: � -3741393 KB 0%
> � � � � memPoolAlloc calls: 1945477528
> � � � � memPoolFree calls: �1968871466
> File descriptor usage for squid:
> � � � � Maximum number of file descriptors: � 5120
> � � � � Largest file desc currently in use: � 1207
> � � � � Number of file desc currently in use: �701
> � � � � Files queued for open: � � � � � � � � � 0
> � � � � Available number of file descriptors: 4419
> � � � � Reserved number of file descriptors: � 100
> � � � � Store Disk files open: � � � � � � � � � 0
> Internal Data Structures:
> � � � � 3924227 StoreEntries
> � � � � 169720 StoreEntries with MemObjects
> � � � � 169696 Hot Object Cache Items
> � � � � 3924173 on-disk objects
> Any sugestions? thanks!
>
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Received on Wed Jul 06 2011 - 09:18:21 MDT