From owner-freebsd-alpha Fri Mar 30 6:53:23 2001 Delivered-To: freebsd-alpha@freebsd.org Received: from duke.cs.duke.edu (duke.cs.duke.edu [152.3.140.1]) by hub.freebsd.org (Postfix) with ESMTP id C9AAC37B72E for ; Fri, 30 Mar 2001 06:53:20 -0800 (PST) (envelope-from gallatin@cs.duke.edu) Received: from grasshopper.cs.duke.edu (grasshopper.cs.duke.edu [152.3.145.30]) by duke.cs.duke.edu (8.9.3/8.9.3) with ESMTP id JAA22803; Fri, 30 Mar 2001 09:53:20 -0500 (EST) Received: (from gallatin@localhost) by grasshopper.cs.duke.edu (8.11.3/8.9.1) id f2UEqoh83701; Fri, 30 Mar 2001 09:52:50 -0500 (EST) (envelope-from gallatin@cs.duke.edu) From: Andrew Gallatin MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15044.40385.937863.333900@grasshopper.cs.duke.edu> Date: Fri, 30 Mar 2001 09:52:49 -0500 (EST) To: Doug Rabson Cc: Subject: Re: do we care about performance yet? In-Reply-To: References: <15044.1867.943183.224703@grasshopper.cs.duke.edu> X-Mailer: VM 6.75 under 21.1 (patch 12) "Channel Islands" XEmacs Lucid Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Doug Rabson writes: > On Thu, 29 Mar 2001, 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. > > I think this is just showing a lot of contention for the Giant mutex (and > probably some i/o waiting). Since we don't halt on idle, the cpu will > spend a lot of time buzzlooping on runq_check. > Yes, certainly. And using lots of power too ;-( Drew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message