Anderson,
Obrigado pelas dicas, vou aplicar aqui para ver se sinto alguma diferença.
Segue considerações:
Qual o SO? CentOS
Quantos usuários? 2000 Usuários
O SO é de 32 ou 64bits? 32 bits
Quais outros serviços que rodam na maquina? Nenhum, dedicada para o squid.
Saída de free -m?
total used free shared buffers cached
Mem: 8114 7203 910 0 448 3691
-/+ buffers/cache: 3062 5051
Swap: 0 0 0
Saída do comando squidclient -p 3128 mgr:info?
HTTP/1.0 200 OK
Server: squid/2.7.STABLE9
Date: Mon, 05 Nov 2012 14:42:10 GMT
Content-Type: text/plain
Expires: Mon, 05 Nov 2012 14:42:10 GMT
X-Cache: MISS from CORPRXISPB02
X-Cache-Lookup: MISS from CORPRXISPB02:3128
Via: 1.0 CORPRXISPB02:3128 (squid/2.7.STABLE9)
Connection: close
Squid Object Cache: Version 2.7.STABLE9
Start Time: Mon, 05 Nov 2012 04:01:54 GMT
Current Time: Mon, 05 Nov 2012 14:42:10 GMT
Connection information for squid:
Number of clients accessing cache: 1490
Number of HTTP requests received: 3798176
Number of ICP messages received: 0
Number of ICP messages sent: 0
Number of queued ICP replies: 0
Request failure ratio: 0.00
Average HTTP requests per minute since start: 5932.2
Average ICP messages per minute since start: 0.0
Select loop called: 30497728 times, 1.260 ms avg
Cache information for squid:
Request Hit Ratios: 5min: 19.1%, 60min: 16.2%
Byte Hit Ratios: 5min: 19.4%, 60min: 17.8%
Request Memory Hit Ratios: 5min: 42.1%, 60min: 41.0%
Request Disk Hit Ratios: 5min: 6.4%, 60min: 4.7%
Storage Swap size: 6426784 KB
Storage Mem size: 2048052 KB
Mean Object Size: 18.67 KB
Requests given to unlinkd: 0
Median Service Times (seconds) 5 min 60 min:
HTTP Requests (All): 2.25116 0.85130
Cache Misses: 3.46762 1.62803
Cache Hits: 1.54242 0.68577
Near Hits: 2.37608 1.00114
Not-Modified Replies: 0.61549 0.25890
DNS Lookups: 0.39726 0.19488
ICP Queries: 0.00000 0.00000
Resource usage for squid:
UP Time: 38416.166 seconds
CPU Time: 17151.241 seconds
CPU Usage: 44.65%
CPU Usage, 5 minute avg: 99.93%
CPU Usage, 60 minute avg: 99.89%
Process Data Segment Size via sbrk(): 4293521676 KB
Maximum Resident Size: -1723312 KB
Page faults with physical i/o: 0
Memory usage for squid via mallinfo():
Total space in arena: -1445488 KB
Ordinary blocks: -1446959 KB 81526 blks
Small blocks: 0 KB 0 blks
Holding blocks: 5812 KB 3 blks
Free Small blocks: 0 KB
Free Ordinary blocks: 1470 KB
Total in use: -1441147 KB 100%
Total free: 1470 KB 0%
Total size: -1439676 KB
Memory accounted for:
Total accounted: 2335755 KB
memPoolAlloc calls: 402245140
memPoolFree calls: 395257992
File descriptor usage for squid:
Maximum number of file descriptors: 16384
Largest file desc currently in use: 6804
Number of file desc currently in use: 6661
Files queued for open: 0
Available number of file descriptors: 9723
Reserved number of file descriptors: 100
Store Disk files open: 48
IO loop method: epoll
Internal Data Structures:
376036 StoreEntries
235952 StoreEntries with MemObjects
235270 Hot Object Cache Items
344261 on-disk objects