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Re: [Qemu-devel] Re: [PATCH 2/7] Enable I/O thread and VNC threads by de
From: |
Aurelien Jarno |
Subject: |
Re: [Qemu-devel] Re: [PATCH 2/7] Enable I/O thread and VNC threads by default |
Date: |
Mon, 7 Feb 2011 21:44:07 +0100 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
On Mon, Feb 07, 2011 at 02:03:50PM -0200, Marcelo Tosatti wrote:
> On Mon, Feb 07, 2011 at 08:12:55AM -0200, Marcelo Tosatti wrote:
> > > > One more thing I didn't mention on the email-thread or on IRC is
> > > > that last time I checked, qemu with io-thread was performing
> > > > significantly slower than non io-thread builds. That was with
> > > > TCG emulation (not kvm). Somewhere between 5 - 10% slower, IIRC.
> >
> > Can you recall what was the test ?
> >
It's also something I've seen using network transfer in guest. IIRC the
biggest slowdown was using the smc91c111 card under qemu-system-arm
where it was about 20% slower. Other cards on other architectures (I
remember testing powerpc, mips and sh4) are more in the 5 to 10 % area.
--
Aurelien Jarno GPG: 1024D/F1BCDB73
address@hidden http://www.aurel32.net
- Re: [Qemu-devel] Re: [PATCH 2/7] Enable I/O thread and VNC threads by default, (continued)
- Re: [Qemu-devel] Re: [PATCH 2/7] Enable I/O thread and VNC threads by default, Anthony Liguori, 2011/02/08
- Re: [Qemu-devel] Re: [PATCH 2/7] Enable I/O thread and VNC threads by default, Aurelien Jarno, 2011/02/08
- Re: [Qemu-devel] Re: [PATCH 2/7] Enable I/O thread and VNC threads by default, Anthony Liguori, 2011/02/08
- Re: [Qemu-devel] Re: [PATCH 2/7] Enable I/O thread and VNC threads by default, Aurelien Jarno, 2011/02/08
- Re: [Qemu-devel] Re: [PATCH 2/7] Enable I/O thread and VNC threads by default, Blue Swirl, 2011/02/09
- Re: [Qemu-devel] [PATCH 2/7] Enable I/O thread and VNC threads by default, Stefan Weil, 2011/02/09
- Re: [Qemu-devel] [PATCH 2/7] Enable I/O thread and VNC threads by default, Paolo Bonzini, 2011/02/10
- Re: [Qemu-devel] [PATCH 2/7] Enable I/O thread and VNC threads by default, Paolo Bonzini, 2011/02/10
- Re: [Qemu-devel] [PATCH 2/7] Enable I/O thread and VNC threads by default, Stefan Weil, 2011/02/10
- [Qemu-devel] Re: [PATCH 2/7] Enable I/O thread and VNC threads by default, Paolo Bonzini, 2011/02/08
Re: [Qemu-devel] Re: [PATCH 2/7] Enable I/O thread and VNC threads by default,
Aurelien Jarno <=
Re: [Qemu-devel] Re: [PATCH 2/7] Enable I/O thread and VNC threads by default, Scott Wood, 2011/02/07
Re: [Qemu-devel] Re: [PATCH 2/7] Enable I/O thread and VNC threads by default, Edgar E. Iglesias, 2011/02/07
Re: [Qemu-devel] Re: [PATCH 2/7] Enable I/O thread and VNC threads by default, Edgar E. Iglesias, 2011/02/07