[squid-users] squid is closing sessions after 1 hour

Dear mates,
We have an Intel SSR212MMC2 system with 32GB of rams , 12 SATA HD;s
(each 2 are made raid0)
port 80 traffic is routed from a mikrotik to the squid 2.7 stable7 box
(running on debian lenny)

cache_dir aufs /cache1 1200000 16 256
cache_dir aufs /cache2 1200000 16 256
cache_dir aufs /cache3 1200000 16 256
cache_dir aufs /cache4 1200000 16 256

fdisk -l
/dev/sdc1 1.8T 72G 1.7T 5% /cache1
/dev/sdd1 1.8T 72G 1.7T 5% /cache2
/dev/sde1 1.8T 72G 1.7T 5% /cache3
/dev/sdf1 1.8T 72G 1.7T 5% /cache4

we noticed that when cache is nearly about 280GB (70GB on each
cache_dir), squid closes all sessions every 1 hour for 30 seconds,
then it works back normally...

So what can cause this problem?

Iam sorry i didnt mention too much details, because iam afraid to
flood you with data. Iam ready to provide any details you need.

Cordially,

Bilal
Received on Sun Jan 31 2010 - 21:19:32 MST