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Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy lo
From: |
Gleb Natapov |
Subject: |
Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy load. |
Date: |
Tue, 11 Nov 2008 16:43:24 +0200 |
On Mon, Nov 10, 2008 at 09:46:12AM -0600, Anthony Liguori wrote:
> Gleb Natapov wrote:
>> On Mon, Nov 10, 2008 at 09:24:55AM -0600, Anthony Liguori wrote:
>>
>>> Gleb Natapov wrote:
>>>
>>>> On Sun, Nov 09, 2008 at 10:36:59AM -0600, Anthony Liguori wrote:
>>>>
>>>>
>>>>
>>>>> Otherwise, I'm curious if you have any insight into where we're
>>>>> pausing for 10ms that's causing the missed interrupt?
>>>>>
>>>>>
>>>> Don't know yet.
>>>>
>>> What's your full command line?
>>>
>>>
>> /home/gleb/install/qemu/org/bin/qemu-system-x86_64 -hda Windows2003.raw -m
>> 1024 -net
>> nic,model=rtl8139 -net user -vnc 172.17.10.111:1 -usbdevice tablet
>>
>
> -usbdevice tablet may be the culprit. Is the guest doing an significant IO?
>
-usbdevice tablet has nothing to do with it. Qemu misses interrupt even
without this option and with SDL screen it misses them in bunches when
SDL redraws a screen. In case of vnc qemu misses interrupt because of
fsync() call in raw_flush(), or so my instrumentation shows.
--
Gleb.
- Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy load., (continued)
- Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy load., Anthony Liguori, 2008/11/09
- Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy load., Gleb Natapov, 2008/11/10
- Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy load., Anthony Liguori, 2008/11/10
- Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy load., Gleb Natapov, 2008/11/10
- Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy load., Anthony Liguori, 2008/11/10
- Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy load., Gleb Natapov, 2008/11/10
- Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy load.,
Gleb Natapov <=
- Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy load., Anthony Liguori, 2008/11/11
- Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy load., Anthony Liguori, 2008/11/11
- Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy load., Gleb Natapov, 2008/11/12
- Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy load., Glauber Costa, 2008/11/12
- Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy load., Dor Laor, 2008/11/12
Re: [Qemu-devel] [RESEND][PATCH 0/3] Fix guest time drift under heavy load., Jamie Lokier, 2008/11/05