From: Gleb Natapov <gleb@kernel.org>
To: Zhang Haoyu <zhanghy@sangfor.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>, kvm <kvm@vger.kernel.org>,
Alex Williamson <alex.williamson@redhat.com>,
"Zhang, Yang Z" <yang.z.zhang@intel.com>,
"Michael S.Tsirkin" <mst@redhat.com>
Subject: Re: [question] lots of interrupts injected to vm when pressing somekey w/o releasing
Date: Thu, 20 Nov 2014 09:06:20 +0200 [thread overview]
Message-ID: <20141120070620.GG26187@minantech.com> (raw)
In-Reply-To: <201411201459337426770@sangfor.com>
On Thu, Nov 20, 2014 at 02:59:36PM +0800, Zhang Haoyu wrote:
> >On 20/11/2014 03:20, Zhang Haoyu wrote:
> >> Hi all,
> >>
> >> If I press the one of "Insert/Delete/Home/End/PageUp/PageDown/UpArrow/
> >> DownArrow/LeftArrow/RightArrow" key w/o releasing, then lots of interrupts
> >> will be injected to vm(win7/win2008), about 8000/s, the system become very slow,
> >> bringing very bad experience. But the other keys are okay.
> >> And, linux guest has no this problem.
> >
> >Do you have a trace for this? What version of QEMU and what UI backend?
> >
> Sorry for forgetting to mention test environment from the start.
> Host: rhel7 with kernel-3.10.0-121
> QEMU: qemu-2.0.2
> Guest: win7(bad),win2008(bad),linux-kernel-3.10.0-121(good)
>
> No UI backend, directly start the VM via qemu command.
>
> perf top data when above problem happening:
Trace it like this: http://www.linux-kvm.org/page/Tracing
--
Gleb.
next prev parent reply other threads:[~2014-11-20 7:06 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-20 2:20 [question] lots of interrupts injected to vm when pressing some key w/o releasing Zhang Haoyu
2014-11-20 6:19 ` Paolo Bonzini
2014-11-20 6:59 ` [question] lots of interrupts injected to vm when pressing somekey " Zhang Haoyu
2014-11-20 7:06 ` Gleb Natapov [this message]
2014-11-24 8:58 ` [question] lots of interrupts injected to vm when pressingsomekey " Zhang Haoyu
[not found] ` <A9667DDFB95DB7438FA9D7D576C3D87E0ABEF25B@SHSMSX104.ccr.corp.intel.com>
2014-11-21 22:31 ` [question] lots of interrupts injected to vm when pressing some key " Paolo Bonzini
[not found] ` <A9667DDFB95DB7438FA9D7D576C3D87E0ABF0FE3@SHSMSX104.ccr.corp.intel.com>
2014-11-25 9:49 ` Paolo Bonzini
[not found] ` <A9667DDFB95DB7438FA9D7D576C3D87E0ABF396A@SHSMSX104.ccr.corp.intel.com>
2014-12-03 15:42 ` Paolo Bonzini
2014-12-15 9:39 ` Zhang Haoyu
2014-12-15 9:40 ` Paolo Bonzini
2014-11-24 12:17 ` Zhang Haoyu
2014-11-24 12:25 ` Paolo Bonzini
2014-11-25 1:54 ` [question] lots of interrupts injected to vm when pressing somekey " Zhang Haoyu
2014-11-25 7:02 ` Paolo Bonzini
2014-11-25 11:20 ` Zhang Haoyu
2014-11-25 13:52 ` Paolo Bonzini
[not found] ` <201411261511537876936@sangfor.com>
[not found] ` <A9667DDFB95DB7438FA9D7D576C3D87E0ABF2A95@SHSMSX104.ccr.corp.intel.com>
2014-11-27 7:20 ` [question] lots of interrupts injected to vm when pressing some key " Zhang Haoyu
[not found] ` <A9667DDFB95DB7438FA9D7D576C3D87E0ABF2C24@SHSMSX104.ccr.corp.intel.com>
2014-11-27 8:54 ` Zhang Haoyu
2014-11-28 8:27 ` Wanpeng Li
2014-11-28 9:44 ` Zhang Haoyu
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