From: Michael Tokarev <mjt@tls.msk.ru>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] qemu-system-i386 vs qemu-system-x86_64 ?
Date: Fri, 14 Sep 2012 14:03:58 +0400 [thread overview]
Message-ID: <5053010E.1000103@msgid.tls.msk.ru> (raw)
In-Reply-To: <50530047.9030703@siemens.com>
On 14.09.2012 14:00, Jan Kiszka wrote:
[]
> The major difference in qemu-system-i386 vs. qemu-system-x86_64 is on
> the TCG side: We measured noticeable performance benefits when running
> 32/16 bit OSes against qemu-system-i386 vs. using qemu-system-x86_64. I
> don't have numbers at hand, but colleagues decided to use the 32-bit
> version for that reason (when no KVM is available).
Interesting. Maybe someone should look at the difference on TCG side
and merge interesting bits from i386 to x86_64... :)
The thing is: x86_64 becomes the only x86 platform these days, or at
least the MAIN platform.
Thank you for the clarification -- very useful information indeed!
/mjt
next prev parent reply other threads:[~2012-09-14 10:04 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-14 7:39 [Qemu-devel] qemu-system-i386 vs qemu-system-x86_64 ? Michael Tokarev
2012-09-14 9:33 ` Daniel P. Berrange
2012-09-14 9:39 ` Michael Tokarev
2012-09-14 10:00 ` Jan Kiszka
2012-09-14 10:03 ` Michael Tokarev [this message]
2012-09-14 10:12 ` Jan Kiszka
2012-09-14 10:20 ` Daniel P. Berrange
2012-09-14 10:32 ` Jan Kiszka
2012-09-14 10:39 ` Peter Maydell
2012-09-14 12:24 ` Aurelien Jarno
2012-09-14 19:29 ` Blue Swirl
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