From: Ulrich Hecht <uli@suse.de>
To: Aurelien Jarno <aurelien@aurel32.net>
Cc: Laurent Desnogues <laurent.desnogues@gmail.com>,
qemu-devel@nongnu.org, agraf@suse.de
Subject: Re: [Qemu-devel] [PATCH 2/9] S/390 CPU emulation
Date: Wed, 11 Nov 2009 12:46:25 +0200 [thread overview]
Message-ID: <200911111146.26911.uli@suse.de> (raw)
In-Reply-To: <20091110160250.GC9052@hall.aurel32.net>
On Tuesday 10 November 2009, Aurelien Jarno wrote:
> I have tested it by removing all the block around tb_add_jump in
> cpu_exec.c. I have a speed loss of about 2.5x in the boot time of an
> x86_64 image.
I just tried it with qemu-system-x86_64, and with that I can observe a
noticable performance gain using TB chaining as well. Maybe it's simply
a lot more effective in system than in userspace emulation.
Anyway, having implemented it for BRC already, I might as well leave it
in for future generations to enjoy.
CU
Uli
--
SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nürnberg)
next prev parent reply other threads:[~2009-11-11 10:45 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-16 12:38 [Qemu-devel] [PATCH 0/9] S/390 support updated Ulrich Hecht
2009-10-16 12:38 ` [Qemu-devel] [PATCH 1/9] TCG "sync" op Ulrich Hecht
2009-10-16 12:38 ` [Qemu-devel] [PATCH 2/9] S/390 CPU emulation Ulrich Hecht
2009-10-16 12:38 ` [Qemu-devel] [PATCH 3/9] S/390 host/target build system support Ulrich Hecht
2009-10-16 12:38 ` [Qemu-devel] [PATCH 4/9] S/390 host support for TCG Ulrich Hecht
2009-10-16 12:38 ` [Qemu-devel] [PATCH 5/9] linux-user: S/390 64-bit (s390x) support Ulrich Hecht
2009-10-16 12:38 ` [Qemu-devel] [PATCH 6/9] linux-user: don't do locking in single-threaded processes Ulrich Hecht
2009-10-16 12:38 ` [Qemu-devel] [PATCH 7/9] linux-user: dup3, fallocate syscalls Ulrich Hecht
2009-10-16 12:38 ` [Qemu-devel] [PATCH 8/9] linux-user: define a couple of syscalls for non-uid16 targets Ulrich Hecht
2009-10-16 12:38 ` [Qemu-devel] [PATCH 9/9] linux-user: getpriority errno fix Ulrich Hecht
2009-10-17 10:44 ` [Qemu-devel] [PATCH 3/9] S/390 host/target build system support Aurelien Jarno
2009-10-17 10:42 ` [Qemu-devel] [PATCH 2/9] S/390 CPU emulation Aurelien Jarno
2009-10-19 17:17 ` Ulrich Hecht
2009-10-22 21:28 ` Aurelien Jarno
2009-11-02 15:16 ` Ulrich Hecht
2009-11-02 18:42 ` Aurelien Jarno
2009-11-02 19:03 ` Laurent Desnogues
2009-11-09 16:55 ` Ulrich Hecht
2009-11-10 16:02 ` Aurelien Jarno
2009-11-11 10:46 ` Ulrich Hecht [this message]
2009-10-16 15:52 ` [Qemu-devel] [PATCH 1/9] TCG "sync" op Aurelien Jarno
2009-10-16 16:37 ` Ulrich Hecht
2009-10-16 17:29 ` Aurelien Jarno
2009-10-19 17:17 ` Ulrich Hecht
2009-10-17 8:59 ` Edgar E. Iglesias
2009-10-19 17:17 ` Ulrich Hecht
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