From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Mosberger Date: Wed, 21 May 2003 06:49:17 +0000 Subject: [Linux-ia64] web page on O(1) scheduler Message-Id: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org Recently, I started to look into some odd performance behaviors of the O(1) scheduler. I decided to document what I found in a web page at: http://www.hpl.hp.com/research/linux/kernel/o1.php (it may take another couple of hours before the pages show up outside the HP firewall, so if you get "page not found" at the moment, don't be surprised). I should say that I have no direct stake in the CPU scheduler (never worked on it, not sure I ever would want to), but I feel that it's worthwhile to at least document the O(1) scheduler a bit better. Also, I do feel that the O(1) scheduler currently has rather poor "long-term" properties. It would be nice if some of those properties could be improved without hurting the other excellent properties of the current O(1) scheduler. I think the web pages should be most relevant to the HPTC (high performance technical computing) community, since this is the community that is most likely affected by some of the performance oddities of the O(1) scheduler. Certainly anyone using OpenMP on Intel platforms (x86 and ia64) may want to take a look. Comments welcome. --david