From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: Re: [kvm] Re: tcpdump locks up kvm host for a while. Date: Sun, 02 Oct 2011 19:06:35 +0200 Message-ID: <4E889A1B.4030004@redhat.com> References: <20110928020137.GK21223@stodi.digitalkingdom.org> <20110929190712.GT11528@stodi.digitalkingdom.org> <20110930190321.GA2414@nik-comp.lan> <20110930221908.GF20043@stodi.digitalkingdom.org> <20111001073643.GA2253@nik-comp.lan> <20111002004540.GJ20043@stodi.digitalkingdom.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Nikola Ciprich , kvm@vger.kernel.org To: Robin Lee Powell Return-path: Received: from mx1.redhat.com ([209.132.183.28]:31110 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751596Ab1JBRHD (ORCPT ); Sun, 2 Oct 2011 13:07:03 -0400 In-Reply-To: <20111002004540.GJ20043@stodi.digitalkingdom.org> Sender: kvm-owner@vger.kernel.org List-ID: On 10/02/2011 02:45 AM, Robin Lee Powell wrote: > I'm afraid clocksource=hpet didn't help much; after about 24 hours > up, tcpdump hung the machine for for about 10 seconds. That may or > may not be better than usual; I haven't been timing things > precisely. My suspicion is that it's slightly better, but it's > still not great. > > Also: > > rlpowell@vrici> dmesg | grep -i clock > [ 0.000000] Command line: ro root=/dev/vda2 rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us console=ttyS0,115200 clocksource=hpet > [ 0.000000] kvm-clock: Using msrs 12 and 11 > [ 0.000000] kvm-clock: cpu 0, msr 0:1b567c1, boot clock > [ 0.000000] kvm-clock: cpu 0, msr 0:5fc137c1, primary cpu clock > [ 0.000000] Kernel command line: ro root=/dev/vda2 rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us console=ttyS0,115200 clocksource=hpet > [ 0.000000] hpet clockevent registered > [ 0.260136] Switching to clocksource hpet > [ 1.009393] rtc_cmos 00:01: setting system clock to 2011-10-01 07:49:50 UTC (1317455390) > [ 1.821905] Refined TSC clocksource calibration: 2394.030 MHz. > [60555.473797] Clocksource tsc unstable (delta = -42950328292 ns) > > (note the last line) > Do you get a similar error with kvmclock? -- error compiling committee.c: too many arguments to function