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Re: [Qemu-devel] Re: [RFC][PATCH] performance improvement for windows gu

From: Paul Brook
Subject: Re: [Qemu-devel] Re: [RFC][PATCH] performance improvement for windows guests, running on top of virtio block device
Date: Wed, 24 Feb 2010 02:58:18 +0000
User-agent: KMail/1.12.4 (Linux/2.6.32-trunk-amd64; KDE/4.3.4; x86_64; ; )

> Bottom halves are run at the very end of the event loop which means that
> they're guaranteed to be the last thing run.  idle bottom halves can be
> rescheduled without causing an infinite loop and do not affect the
> select timeout (which normal bottom halves do).

Idle bottom halves (i.e. qemu_bh_schedule_idle) are just bugs waiting to 
happen, and should never be used for anything.


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