linux-kernel - [PATCH] limit CPU time spent in kipmid (version 4)

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Message-ID: <4A2814FF.4020400@ts.fujitsu.com>
Date:	Thu, 04 Jun 2009 20:39:59 +0200
From:	Martin Wilck <martin.wilck@...fujitsu.com>
To:	Corey Minyard <minyard@....org>
CC:	Greg KH <greg@...ah.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"openipmi-developer@...ts.sourceforge.net" 
	<openipmi-developer@...ts.sourceforge.net>,
	Bela Lubkin <blubkin@...are.com>
Subject: [PATCH] limit CPU time spent in kipmid (version 4)

Hi all,

I am sorry for the long silence. I am sending here a new version of my 
patch which takes into account Bela's suggestions (well, most of them).
I compiled and tested it with 2.6.29.4, the results are similar as 
before. By setting kipmid_max_busy_us to a value between 100 and 500, it 
is possible to bring down kipmid CPU load to practically 0 without 
loosing too much ipmi throughput performance.

Please give me some feedback whether this patch will get merged, and if 
not, what improvement is needed.

Regards
Martin

-- 
Dr. Martin Wilck
PRIMERGY System Software Engineer
x86 Server Engineering

Fujitsu Technology Solutions GmbH
Heinz-Nixdorf-Ring 1
33106 Paderborn, Germany

Phone:			++49 5251 525 2796
Fax:			++49 5251 525 2820
Email:			martin.wilck@...fujitsu.com
Internet:		http://ts.fujitsu.com
Company Details:	http://de.ts.fujitsu.com/imprint.html

View attachment "kipmid_max_busy_arr2_2.6.29.diff" of type "text/x-patch" (2756 bytes)