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@ts.fujitsu.com Internet: http://ts.fujitsu.com Company Details: http://de.ts.fujitsu.com/imprint.html