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[Qemu-devel] Re: Extremely slow graphic updates
From: |
Stefano Stabellini |
Subject: |
[Qemu-devel] Re: Extremely slow graphic updates |
Date: |
Tue, 20 Jan 2009 11:28:28 +0000 |
User-agent: |
Thunderbird 2.0.0.14 (X11/20080505) |
Stefano Stabellini wrote:
> Paul Brook wrote:
>
>>> 'ssh -X fastserver' and running qemu there. With the new display code
>>> this has made qemu very slow and hardly useable.
>> I'm seeing similar extreme slowness even on a local machine.
>>
>> Particularly noticeable is that the monitor displayed on a qemu virtual SDL
>> console (i.e. the defaut) slow enough to be practically unusable. It's
>> taking
>> the best part of a second to rendering a character.
>>
>> This is on an otherwise fast machine that does not have accelerated X
>> drivers,
>> which suggests we're doing something really dumb like reading from video ram.
>
> We are not doing anything that dumb (anything that I am aware of :)
>
>> I have confirmed that this is caused by r6336.
>>
>
> What is the quickest way for me to reproduce this problem?
> Have you seen this on ppc emulation only?
>
> I gather that the guest is in text mode. Have you seen this in graphical
> mode too? If yes, what was the resolution of the guest?
>
> What is the resolution of your host? What X11 extensions are you using?
> Do you set SDL_VIDEODRIVER anywhere?
>
> Sorry for the list of questions, I am just trying to better understand
> the issue.
>
>
And most important: are you sure it is an SDL only problem?
- Re: [Qemu-devel] qemu-system-ppc seems slow today., (continued)
- Re: [Qemu-devel] qemu-system-ppc seems slow today., Aurelien Jarno, 2009/01/19
- Re: [Qemu-devel] qemu-system-ppc seems slow today., Lennart Sorensen, 2009/01/19
- Re: [Qemu-devel] qemu-system-ppc seems slow today., Lennart Sorensen, 2009/01/19
- Re: [Qemu-devel] qemu-system-ppc seems slow today., Aurelien Jarno, 2009/01/19
- Re: [Qemu-devel] qemu-system-ppc seems slow today., Lennart Sorensen, 2009/01/19
- Re: [Qemu-devel] qemu-system-ppc seems slow today., Lennart Sorensen, 2009/01/19
- Re: [Qemu-devel] qemu-system-ppc seems slow today., François Revol, 2009/01/19
- [Qemu-devel] Extremely slow graphic updates (was: qemu-system-ppc seems slow today), Paul Brook, 2009/01/19
- [Qemu-devel] Re: Extremely slow graphic updates, Anthony Liguori, 2009/01/19
- [Qemu-devel] Re: Extremely slow graphic updates, Stefano Stabellini, 2009/01/20
- [Qemu-devel] Re: Extremely slow graphic updates,
Stefano Stabellini <=
- [Qemu-devel] Re: Extremely slow graphic updates, Lennart Sorensen, 2009/01/20
- [Qemu-devel] Re: Extremely slow graphic updates, Lennart Sorensen, 2009/01/20
- [Qemu-devel] Re: Extremely slow graphic updates, Stefano Stabellini, 2009/01/20
- [Qemu-devel] Re: Extremely slow graphic updates, Lennart Sorensen, 2009/01/20
- Re: [Qemu-devel] Re: Extremely slow graphic updates, Samuel Thibault, 2009/01/20
- Re: [Qemu-devel] Re: Extremely slow graphic updates, Lennart Sorensen, 2009/01/20
- Re: [Qemu-devel] Re: Extremely slow graphic updates, Stefano Stabellini, 2009/01/20
- Re: [Qemu-devel] Re: Extremely slow graphic updates, Lennart Sorensen, 2009/01/20
- Re: [Qemu-devel] Re: Extremely slow graphic updates, Lennart Sorensen, 2009/01/20
- Re: [Qemu-devel] Re: Extremely slow graphic updates, Jamie Lokier, 2009/01/20