Amos Jeffries-2 wrote > Is traffic speed 2-3 times faster or higher as well? No . Amos Jeffries-2 wrote > Is disk I/O processing higher? (a large rock store swapping data to/from > disk would cause both CPU and disk increases) No . Everything is same as before . I have 2 squid boxes . one of them has rock , another even doesn't has rock . just upgraded and both boxes has increased cpu usage . -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/3x-cpu-usage-after-upgrade-3-1-20-to-3-3-8-tp4662906p4662943.html Sent from the Squid - Users mailing list archive at Nabble.com.