From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([69.77.167.62] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1JqBGh-0006Xt-QW for garchives@archives.gentoo.org; Sun, 27 Apr 2008 18:06:32 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 3A938E0429; Sun, 27 Apr 2008 18:06:30 +0000 (UTC) Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) by pigeon.gentoo.org (Postfix) with ESMTP id 096DFE0429 for ; Sun, 27 Apr 2008 18:06:30 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp.gentoo.org (Postfix) with ESMTP id C2EE06686F for ; Sun, 27 Apr 2008 18:06:29 +0000 (UTC) X-Virus-Scanned: amavisd-new at gentoo.org X-Spam-Score: -1.179 X-Spam-Level: X-Spam-Status: No, score=-1.179 required=5.5 tests=[AWL=1.420, BAYES_00=-2.599] Received: from smtp.gentoo.org ([127.0.0.1]) by localhost (smtp.gentoo.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id iNFbLIqj+Jbr for ; Sun, 27 Apr 2008 18:06:23 +0000 (UTC) Received: from QMTA06.westchester.pa.mail.comcast.net (qmta06.westchester.pa.mail.comcast.net [76.96.62.56]) by smtp.gentoo.org (Postfix) with ESMTP id D37C16716D for ; Sun, 27 Apr 2008 18:06:22 +0000 (UTC) Received: from OMTA08.westchester.pa.mail.comcast.net ([76.96.62.12]) by QMTA06.westchester.pa.mail.comcast.net with comcast id Jht71Z0080Fqzac5603f00; Sun, 27 Apr 2008 18:06:10 +0000 Received: from [192.168.1.100] ([71.59.219.205]) by OMTA08.westchester.pa.mail.comcast.net with comcast id Ji6L1Z0014SVLDz3U00000; Sun, 27 Apr 2008 18:06:21 +0000 X-Authority-Analysis: v=1.0 c=1 a=7mOBRU54AAAA:8 a=ix-im8zyAAAA:8 a=pwlSjyV6AAAA:8 a=kbMaDh_TvdNtYpzV7VcA:9 a=4rlIDtLbPwkPRtaCblI8Ps22MtYA:4 a=CWfAmLVWKswA:10 Message-ID: <4814C09B.4060008@cesmail.net> Date: Sun, 27 Apr 2008 11:06:19 -0700 From: "M. Edward (Ed) Borasky" User-Agent: Thunderbird 2.0.0.12 (X11/20080213) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-kernel@lists.gentoo.org Reply-to: gentoo-kernel@lists.gentoo.org MIME-Version: 1.0 To: gentoo-kernel@lists.gentoo.org Subject: [gentoo-kernel] 2.6.25 performance monitoring features Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Archives-Salt: bfd7bee7-8062-41aa-b4f4-71efbe5cbd95 X-Archives-Hash: ba52cb41f7b65ab6ed61e7fb9468b160 I'm just getting up to speed on the 2.6.25 kernel. I've got it running, thanks to some hacking from VMware gurus (see Bugzilla https://bugs.gentoo.org/show_bug.cgi?id=218250 for the details.) I'm very interested in some of the new performance monitoring features. In particular, 1. I've "discovered" that the block device partition statistics have been enhanced, and that there may be some kernel configuration settings that need to be documented. This is what I'm personally working on at the moment; I'm writing a paper for Computer Measurement Group on the block layer statistics, so I will probably hunt this one down myself. 2. There is a tool called "latencytop" at http://www.latencytop.org/. It looks like the kernel patches to support it are in 2.6.25. How does one go about requesting "latencytop" in the Portage tree, dependent, of course, on 2.6.25 being stabilized? 3. The process memory map statistics have been improved. I probably won't even look at this one, but if someone else is interested in "pioneering", there are some userspace tools at http://selenic.com/repo/pagemap/. -- gentoo-kernel@lists.gentoo.org mailing list