linux-kernel - Toggling preemption on a running kernel

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Message-ID: <47D086A4.6090103@mxtelecom.com>
Date:	Fri, 07 Mar 2008 00:04:52 +0000
From:	Matthew Hodgson <matthew@...elecom.com>
To:	linux-kernel@...r.kernel.org
Subject: Toggling preemption on a running kernel

Hi,

I'm trying to compare the performance of some networking code 
(throughput and latency when receiving various volumes of UDP streams) 
between a preemptible and non-preemptible 2.6.24 kernel, and was 
wondering if it is possible to temporarily disable preemption on a 
running preemptible kernel.  Is it just a matter of loading a module 
which calls preempt_enable() at load and preempt_disable() at unload - 
or is that too naive?  Is there an existing way of doing this?

thanks,

Matthew.

-- 
Matthew Hodgson <matthew@...elecom.com>
Media & Systems Project Manager
Tel: +44 (0) 845 666 7778
http://www.mxtelecom.com
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