did you use external auth helpers? we have (still) the problem that with squid 3.4.x squid will go up to 99% cpu usage. when we deactivate external auth helpers squid will stay around 20%. we have to switch back to squid 3.2.11 which works without problems. today we did a test with the latest release 3.4.6. markus -----Ursprüngliche Nachricht----- Von: Igor Novgorodov [mailto:igor@xxxxxxxx] Gesendet: Dienstag, 15. Juli 2014 18:35 An: squid-users@xxxxxxxxxxxxxxx Betreff: Re: Squid 3.4 very high cpu usage delay_pools are not used at all (delay_access 1 deny all), i'll try to remove them completely, but as 3.3 works fine i doubt that'll help. On 15.07.2014 19:01, FredB wrote: > Try without delay_pool or at least without CONNECT method and delay_pool > > Fred