Hello, i have got a Squid version 3.1.8 running on a CentOS 5.x. Since it works for url and content filtering, in conjunction with Dansguardian in front, for some hunderd of users, the load average of that machine is sometimes very high (also 5.0 or 8.0...). The biggest process is squid, both on CPUs and Memory; i noticed, by entering top -s and press "1" - that often the system is in wait, perhaps it waits for the disk IO subsystem to write and manage Squid's cache. I tried to make some customization in cache tuning, thinking that the bottleneck are disks, so i reduce the cache size. Something is getting better, but the system is still very loaded. Are there some general suggestions to privilege speed and not bandwidth, for systems with very high load? Thank you for your kind interest, cheers! Francesco