First goes first... Upgrade to 3.5 or 3.4 branch. Then try to use top or htop to get a snapshot of the virtual memory and resident memory that squid uses. Eliezer On 19/06/2015 13:19, Alex Samad wrote: > this is on centos 6.6 > still using the redhat build squid ! > rpm -q squid > squid-3.1.10-29.el6.x86_64