From: "Andreas Färber" <afaerber@suse.de>
To: "Zhanghaoyu (A)" <haoyu.zhang@huawei.com>
Cc: KVM <kvm@vger.kernel.org>, qemu-devel <qemu-devel@nongnu.org>,
"cloudfantom@gmail.com" <cloudfantom@gmail.com>,
"mpetersen@peak6.com" <mpetersen@peak6.com>,
"Shouta.Uehara@jp.yokogawa.com" <Shouta.Uehara@jp.yokogawa.com>,
"paolo.bonzini@gmail.com" <paolo.bonzini@gmail.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Huangweidong (C)" <weidong.huang@huawei.com>,
Zanghongyong <zanghongyong@huawei.com>,
Luonengjun <luonengjun@huawei.com>,
Hanweidong <hanweidong@huawei.com>
Subject: Re: [Qemu-devel] vm performance degradation after kvm live migration or save-restore with ETP enabled
Date: Thu, 11 Jul 2013 12:51:52 +0200 [thread overview]
Message-ID: <51DE8E48.1050501@suse.de> (raw)
In-Reply-To: <D3E216785288A145B7BC975F83A2ED103FEE9853@szxeml556-mbx.china.huawei.com>
Hi,
Am 11.07.2013 11:36, schrieb Zhanghaoyu (A):
> I met similar problem to these, while performing live migration or save-restore test on the kvm platform (qemu:1.4.0, host:suse11sp2, guest:suse11sp2), running tele-communication software suite in guest,
> https://lists.gnu.org/archive/html/qemu-devel/2013-05/msg00098.html
> http://comments.gmane.org/gmane.comp.emulators.kvm.devel/102506
> http://thread.gmane.org/gmane.comp.emulators.kvm.devel/100592
> https://bugzilla.kernel.org/show_bug.cgi?id=58771
>
> After live migration or virsh restore [savefile], one process's CPU utilization went up by about 30%, resulted in throughput degradation of this process.
> oprofile report on this process in guest,
> pre live migration:
So far we've been unable to reproduce this with a pure qemu-kvm /
qemu-system-x86_64 command line on several EPT machines, whereas for
virsh it was reported as confirmed. Can you please share the resulting
QEMU command line from libvirt logs or process list?
Are both host and guest kernel at 3.0.80 (latest SLES updates)?
Thanks,
Andreas
--
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg
WARNING: multiple messages have this Message-ID (diff)
From: "Andreas Färber" <afaerber@suse.de>
To: "Zhanghaoyu (A)" <haoyu.zhang@huawei.com>
Cc: "mpetersen@peak6.com" <mpetersen@peak6.com>,
"Shouta.Uehara@jp.yokogawa.com" <Shouta.Uehara@jp.yokogawa.com>,
KVM <kvm@vger.kernel.org>, "Michael S. Tsirkin" <mst@redhat.com>,
Luonengjun <luonengjun@huawei.com>,
Hanweidong <hanweidong@huawei.com>,
"paolo.bonzini@gmail.com" <paolo.bonzini@gmail.com>,
qemu-devel <qemu-devel@nongnu.org>,
Zanghongyong <zanghongyong@huawei.com>,
"cloudfantom@gmail.com" <cloudfantom@gmail.com>,
"Huangweidong (C)" <weidong.huang@huawei.com>
Subject: Re: [Qemu-devel] vm performance degradation after kvm live migration or save-restore with ETP enabled
Date: Thu, 11 Jul 2013 12:51:52 +0200 [thread overview]
Message-ID: <51DE8E48.1050501@suse.de> (raw)
In-Reply-To: <D3E216785288A145B7BC975F83A2ED103FEE9853@szxeml556-mbx.china.huawei.com>
Hi,
Am 11.07.2013 11:36, schrieb Zhanghaoyu (A):
> I met similar problem to these, while performing live migration or save-restore test on the kvm platform (qemu:1.4.0, host:suse11sp2, guest:suse11sp2), running tele-communication software suite in guest,
> https://lists.gnu.org/archive/html/qemu-devel/2013-05/msg00098.html
> http://comments.gmane.org/gmane.comp.emulators.kvm.devel/102506
> http://thread.gmane.org/gmane.comp.emulators.kvm.devel/100592
> https://bugzilla.kernel.org/show_bug.cgi?id=58771
>
> After live migration or virsh restore [savefile], one process's CPU utilization went up by about 30%, resulted in throughput degradation of this process.
> oprofile report on this process in guest,
> pre live migration:
So far we've been unable to reproduce this with a pure qemu-kvm /
qemu-system-x86_64 command line on several EPT machines, whereas for
virsh it was reported as confirmed. Can you please share the resulting
QEMU command line from libvirt logs or process list?
Are both host and guest kernel at 3.0.80 (latest SLES updates)?
Thanks,
Andreas
--
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg
next prev parent reply other threads:[~2013-07-11 10:52 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-11 9:36 vm performance degradation after kvm live migration or save-restore with ETP enabled Zhanghaoyu (A)
2013-07-11 9:36 ` [Qemu-devel] " Zhanghaoyu (A)
2013-07-11 10:28 ` Michael S. Tsirkin
2013-07-11 10:28 ` [Qemu-devel] " Michael S. Tsirkin
2013-07-11 10:39 ` Gleb Natapov
2013-07-11 10:39 ` [Qemu-devel] " Gleb Natapov
2013-07-11 10:39 ` Xiao Guangrong
2013-07-11 10:39 ` [Qemu-devel] " Xiao Guangrong
2013-07-11 14:00 ` Zhang Haoyu
2013-07-11 14:00 ` [Qemu-devel] " Zhang Haoyu
2013-07-11 10:51 ` Andreas Färber [this message]
2013-07-11 10:51 ` Andreas Färber
2013-07-12 3:21 ` Zhanghaoyu (A)
2013-07-12 3:21 ` Zhanghaoyu (A)
2013-07-11 18:20 ` Bruce Rogers
2013-07-11 18:20 ` [Qemu-devel] " Bruce Rogers
2013-07-27 7:47 ` Zhanghaoyu (A)
2013-07-27 7:47 ` [Qemu-devel] " Zhanghaoyu (A)
2013-07-29 22:14 ` Andrea Arcangeli
2013-07-29 22:14 ` Andrea Arcangeli
2013-07-29 23:47 ` Marcelo Tosatti
2013-07-29 23:47 ` Marcelo Tosatti
2013-07-30 9:04 ` Zhanghaoyu (A)
2013-07-30 9:04 ` Zhanghaoyu (A)
2013-08-01 6:16 ` Gleb Natapov
2013-08-01 6:16 ` Gleb Natapov
2013-08-05 8:35 ` [Qemu-devel] vm performance degradation after kvm live migration or save-restore with EPT enabled Zhanghaoyu (A)
2013-08-05 8:35 ` Zhanghaoyu (A)
2013-08-05 8:43 ` Gleb Natapov
2013-08-05 8:43 ` Gleb Natapov
2013-08-05 9:09 ` Zhanghaoyu (A)
2013-08-05 9:09 ` Zhanghaoyu (A)
2013-08-05 9:15 ` Andreas Färber
2013-08-05 9:15 ` Andreas Färber
2013-08-05 9:22 ` Zhanghaoyu (A)
2013-08-05 9:22 ` Zhanghaoyu (A)
2013-08-05 9:37 ` Gleb Natapov
2013-08-05 9:37 ` Gleb Natapov
2013-08-06 10:47 ` Zhanghaoyu (A)
2013-08-06 10:47 ` Zhanghaoyu (A)
2013-08-07 1:34 ` Zhanghaoyu (A)
2013-08-07 1:34 ` Zhanghaoyu (A)
2013-08-07 5:52 ` Gleb Natapov
2013-08-07 5:52 ` Gleb Natapov
2013-08-14 9:05 ` Zhanghaoyu (A)
2013-08-14 9:05 ` [Qemu-devel] " Zhanghaoyu (A)
2013-08-20 13:33 ` Zhanghaoyu (A)
2013-08-20 13:33 ` [Qemu-devel] " Zhanghaoyu (A)
2013-08-31 7:45 ` Zhanghaoyu (A)
2013-08-31 7:45 ` [Qemu-devel] " Zhanghaoyu (A)
2013-08-05 18:27 ` Xiao Guangrong
2013-08-05 18:27 ` [Qemu-devel] " Xiao Guangrong
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