>> I'm not sure but maybe it started after we enlarged our outer link >> from 2Mbps to 4Mbps. > is that 4 megabits per second or 4 gigabits per second as you mentioned > before? 4Mbits. I was mistaken. >> I will try to move squid cache to local disk but squid works in VMware >> Virtual Infrastructure. So if I move any of virtual machine partitions >> from shared to local storage I wouldn't have an ability to move squid >> VM from one HA cluster node to the other ('cause local partitions on >> cluster nodes are different from each other). > squid should stil access its disk cache better way than NFS. I'm just trying to find out if it's possible to leave it at NFS. The wait I/O time is small. So I still don't know why squid uses 100% of CPU core. Regards, Nikita.