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Re: [Qemu-devel] [PATCH v3 0/3] io-thread optimizations
From: |
Edgar E. Iglesias |
Subject: |
Re: [Qemu-devel] [PATCH v3 0/3] io-thread optimizations |
Date: |
Mon, 22 Aug 2011 21:47:47 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Aug 22, 2011 at 05:46:00PM +0200, Jan Kiszka wrote:
> Rebased as requested, also fixing a compiler warning about last_io being
> write-only on !CONFIG_IOTHREAD. That "__attribute__ ((unused))" in patch
> 2 can be removed again when CONFIG_IOTHREAD becomes mandatory.
>
> Jan Kiszka (3):
> Do not drop global mutex for polled main loop runs
> Poll main loop after I/O events were received
> Do not kick vcpus in TCG mode
>
> cpus.c | 2 +-
> sysemu.h | 2 +-
> vl.c | 22 ++++++++++++++++------
> 3 files changed, 18 insertions(+), 8 deletions(-)
I tested with SMP guests on SMP hosts and can confirm that this
brings a huge speed up. Last time I tested these patches I only
ran UP, and saw no difference.
Acked-by: Edgar E. Iglesias <address@hidden>