From owner-freebsd-alpha Fri Mar 30 15: 2:28 2001 Delivered-To: freebsd-alpha@freebsd.org Received: from meow.osd.bsdi.com (meow.osd.bsdi.com [204.216.28.88]) by hub.freebsd.org (Postfix) with ESMTP id 129B337B719 for ; Fri, 30 Mar 2001 15:02:26 -0800 (PST) (envelope-from jhb@FreeBSD.org) Received: from laptop.baldwin.cx (john@jhb-laptop.osd.bsdi.com [204.216.28.241]) by meow.osd.bsdi.com (8.11.2/8.11.2) with ESMTP id f2UN1iG78496; Fri, 30 Mar 2001 15:01:44 -0800 (PST) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.4.0 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <15044.1867.943183.224703@grasshopper.cs.duke.edu> Date: Fri, 30 Mar 2001 15:01:20 -0800 (PST) From: John Baldwin To: Andrew Gallatin Subject: RE: do we care about performance yet? Cc: freebsd-alpha@FreeBSD.org Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On 30-Mar-01 Andrew Gallatin wrote: > > FWIW, I ran a make buildworld this evening on my UP1000 under iprobe, > as well as with the receive side of a netperf tcp stream. > > (for anybody who doesn't know what iprobe is, check out > http://www.cs.duke.edu/ari/iprobe) > > For the buildworld, the system spent about 40% of its time in kernel. > Roughly 50% of that was in various states of idleness. I've left full > reports at: > > http://www.cs.duke.edu/~gallatin/iprobe_current/ > > The "???NOT_FOUND" is userland code I didn't tell iprobe about. > > The top few functions were: > Sample Image Total > Name Count Pct Pct > ---- ----- --- --- > /boot/kernel/kernel 1411352 39.3 > runq_check 283261 20.1 7.9 > procrunnable 268553 19.0 7.5 > idle_proc 161822 11.5 4.5 These 3 are only used when we are sitting idle in the idle proces because there are no runnable proceses. We can't really optimize these away. :-/ -- John Baldwin -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message