Hi, is there any scenario, where I can find this message in the cache.log for that amount of requests ? What I'm doing wrong ? squidaio_queue_request: WARNING - Queue congestion Running as reverse proxy 2 scsi disks with cache_dir configured at 60% of the size ext3 mounted with noatime REDHAT kernel 2.6.9-55.ELsmp (4 Update 5) 2 x Pentium III 1Ghz. 1Gb RAM access_log none cache_store_log none cache_mem 256 Mb CPU at 16% IOWAIT, 4% USER and 2,6% SYSTEM 60 client req/sec, 70% hit Ratio. compiled with configure options: '--prefix=/usr/local/squid' '--enable-async-io=64' '--enable-storeio=ufs,aufs,coss,null' '--enable-snmp' '--enable-epoll' '--enable-follow-x-forwarded-for' '--enable-x-accelerator-vary' '--with-maxfd=20480' any thoughts ? Regards, Pablo