<I have just taken charge of a squid machine that has been showing some <strange behaviour for the last few weeks. For one thing, cpu usage on <average is above 80% which seems abnormally high, even taking into <account the high traffic (about 2000 hits per minute). < <Secondly, all traffic randomly stops for anywhere between a few seconds <and 20 minutes. Restarting squid during this time brings it back up, but <this isn't feasable when we have to do it a few times a day. Even if I <don't restart manually, it becomes available again by itself, but the <downtime is too costly. < <Nothing unusual shows up in cache_log, access_log or any of the system <logs. Our network monitor also confirms that this isn't a network issue <and that requests are going to the proxy during the outages.
------------------------------------------ Last week I had this same issue with close to the same traffic as you. I tried installing a new OS, newer/older version of squid and still had the same issue. I took the squid.conf during the high CPU load and commented out every ACL and basically allowed all to pass thru. I then turned on each ACL one at a time and found one of my ACLs was causing the CPU load. Not exactly sure why it caused the issue but all has been well for a week now. Regards, Scott
