Date: Sun, 18 Sep 2005 10:15:04 +0200 From: Oliver Lehmann <lehmann@ans-netz.de> To: joseph.koshy@gmail.com Cc: gallatin@cs.duke.edu, current@freebsd.org Subject: Re: low(er) disk performance with sched_4bsd then with sched_ule Message-ID: <20050918101504.0ef0c230.lehmann@ans-netz.de> In-Reply-To: <84dead72050917190558e24d2b@mail.gmail.com> References: <20050914194612.15692485.lehmann@ans-netz.de> <84dead7205091500152a7c25d1@mail.gmail.com> <20050915172005.072f4bdf.lehmann@ans-netz.de> <20050915181238.54b16b4b.lehmann@ans-netz.de> <84dead720509160921732e7f96@mail.gmail.com> <20050916184911.38e2739a.lehmann@ans-netz.de> <20050916225219.73b53cd0.lehmann@ans-netz.de> <84dead7205091619435c12b528@mail.gmail.com> <20050917102846.7bf26a56.lehmann@ans-netz.de> <17196.35762.395155.325627@grasshopper.cs.duke.edu> <84dead72050917190558e24d2b@mail.gmail.com>
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Joseph Koshy wrote: > > I don't know the disk codepath very well, but the samples look > > little suspect. > > They do look odd. For one, there are entries for the p4_*_pmc > functions which would never get called on a P-III box. > > Oliver, after you sync'ed up with RELENG_6, did you keep the > sources for pmcstat(8) sync'ed with current? No, I didn't. I now recompiled CURRENT pmcstat, and rerun the tests. I uploaded the new output: http://pofo.de/tmp/gprof.4bsd.3 -- Oliver Lehmann http://www.pofo.de/ http://wishlist.ans-netz.de/
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