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Re: [Qemu-devel] [patch] Poor user-net performance.


From: Paul Brook
Subject: Re: [Qemu-devel] [patch] Poor user-net performance.
Date: Tue, 20 Dec 2005 21:14:09 +0000
User-agent: KMail/1.8.2

On Tuesday 20 December 2005 20:56, Juergen Lock wrote:
> On Sun, Dec 18, 2005 at 11:28:27PM +0000, Paul Brook wrote:
> > Teaching the slirp code how to do tcp backoff/window scaling is probably
> > a fair amount of work.  The easy alternative is to throttle the slirp
> > output when we know the card's buffers are full. slirp has a convenient
> > hook for this, so it's a matter of adding the hooks to the hardware
> > emulation.
>
> Hmm is the patch supposed to work for i386 guests too?  I get no dhcp
> response and network unreachable when i try to ssh to the host from the
> guest after manually ifconfig'ing, seem like the ne2k doesn't receive
> any packets.  (FreeBSD/i386 host, linux i386 guest - kanotix livecd iso).
> The same works normally without the patch.

Oops. Updated patch should fix this. It was a dumb error in the ne2k code.

Paul

Attachment: patch.qemu_slirp_throttle
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