From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Tokarev Subject: Re: high load with usb device Date: Tue, 14 Sep 2010 17:38:49 +0400 Message-ID: <4C8F7AE9.5060401@msgid.tls.msk.ru> References: <4C80E839.50604@msgid.tls.msk.ru> <4C8A1AE3.8030705@redhat.com> <4C8A2187.1020202@msgid.tls.msk.ru> <4C8A59FE.9090400@msgid.tls.msk.ru> <4C8C9CAA.9030203@redhat.com> <4C8F1B54.60604@msgid.tls.msk.ru> <4C8F3B00.3000703@redhat.com> <4C8F3BA7.7060302@redhat.com> <4C8F47A1.4030600@msgid.tls.msk.ru> <4C8F497C.7000904@redhat.com> <4C8F4DA8.50606@msgid.tls.msk.ru> <4C8F50E1.3060704@redhat.com> <4C8F563E.6070701@msgid.tls.msk.ru> <4C8F757D.1010509@msgid.tls.msk.ru> <4C8F77C1.90509@redhat.com> <4C8F78D6.2060808@msgid.tls.msk.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: KVM list To: Avi Kivity Return-path: Received: from isrv.corpit.ru ([86.62.121.231]:45833 "EHLO isrv.corpit.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751627Ab0INNix (ORCPT ); Tue, 14 Sep 2010 09:38:53 -0400 In-Reply-To: <4C8F78D6.2060808@msgid.tls.msk.ru> Sender: kvm-owner@vger.kernel.org List-ID: 14.09.2010 17:29, Michael Tokarev wrote: [] >> Please post an strace again, this time with -e trace=select. Looks like >> each timer callback results in >50 syscalls, 4 of which are select()s). I just built 0.13-rc1 to see how that one performs. It is very similar to 0.12 in this respect. The selfpipe is gone, but the high load is still here and is exactly like was with 0.12, with very similar strace. /mjt