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To: Davide Libenzi <davidel@xmailserver.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: sys_sched_yield fast path
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From: Andi Kleen <ak@suse.de>
Date: 10 Mar 2001 17:59:33 +0100
In-Reply-To: Davide Libenzi's message of "10 Mar 2001 11:23:39 +0100"
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Davide Libenzi <davidel@xmailserver.org> writes:


> Probably the rate at which is called sys_sched_yield() is not so high to let
> the performance improvement to be measurable.

LinuxThreads mutexes call sched_yield() when a lock is locked, so when you 
have a  multithreaded program with some lock contention it'll be called a lot.

-Andi
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