From: Julian Seward <jseward@acm.org>
To: Brad Campbell <brad@wasp.net.au>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Reducing X communication bandwidth
Date: Sat, 10 Jul 2004 13:42:34 +0100 [thread overview]
Message-ID: <200407101342.34256.jseward@acm.org> (raw)
In-Reply-To: <40EFDA42.2070704@wasp.net.au>
> > Anyway, QEMU from cvs is unusable like this, at least when
> > running WinXP or Win2K. The SDL layer (qemu/sdl.c) blasts
> > huge numbers of pixels across the network in response to even
> > the simplest graphical operations. Notably, moving the mouse
> > pointer is appalling, with an update rate of about twice per
> > second, which is hopeless.
>
> Great patch! This patch combined with ssh -X -C makes qemu usable over my
> wireless link between office and home. Still a little laggy but at least
> usable.
Cool.
You might want to experiment with the THRESH value in sdl.c
to get the best performance. I set it to 32 and that works
pretty well for me, but I'm not claiming it's optimal -- I
only tried 16 and 32, and 32 was better. You can use
any value >= 1. It controls the size of the blocks of
pixels over which the patch makes send/no-send decisions.
J
next prev parent reply other threads:[~2004-07-10 12:43 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-10 8:45 [Qemu-devel] Reducing X communication bandwidth Julian Seward
2004-07-10 9:10 ` Jan Dittmer
2004-07-11 10:15 ` Hetz Ben Hamo
2004-07-10 10:53 ` Jan Dittmer
2004-07-11 8:20 ` Jan Dittmer
2004-07-11 11:18 ` Julian Seward
2004-07-10 12:00 ` Brad Campbell
2004-07-10 12:42 ` Julian Seward [this message]
2004-07-10 13:53 ` Fabrice Bellard
2004-07-11 9:53 ` Johannes Schindelin
2004-07-11 11:22 ` Julian Seward
2004-07-12 10:16 ` Johannes Schindelin
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