Date: Fri, 24 Jan 2003 17:08:10 -0800 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: Gary Jennejohn <garyj@jennejohn.org> Cc: arch@FreeBSD.ORG Subject: Re: New scheduler Message-ID: <20030125010810.GA14191@troutmask.apl.washington.edu> In-Reply-To: <200301242051.h0OKpcOv029151@peedub.jennejohn.org> References: <200301242051.h0OKpcOv029151@peedub.jennejohn.org>
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On Fri, Jan 24, 2003 at 09:51:38PM +0100, Gary Jennejohn wrote: > I assume that this new scheduler is only for SMP? > > I tried it out on my UP machine - BTW on line 312 there's a missing > ``);'' - and the results were, not to pull any blows, catastrophic. > > Running X I started a ``make buildworld'' in an aterm and immediately > observerd: > o the cursor lagged way behind mouse movements > o switching desktops allowed me to observe in detail how various > applications repaint themselves - it was that slow > o mozilla was totally unusable > > With the current scheduler interactive applications are still quite > snappy. I never observe any of the above mentioned problems with it. > I know this is a WIP, but I thought I'd report my observations. > > This on an XP 1800+ with 768MB of memory and (fairly) fast SCSI disks. > I can (unfortunately) confirm Gary's observation. Building LAPACK, "make -j 2 buldworld" and running KDE brought my 1GHz athlon to its knees. Moving the mouse between windows/desktops was painfully slow/lagging. top(1) for a similar load on the current scheduler shows last pid: 4220; load averages: 2.51, 1.06, 0.43 up 0+00:22:02 17:06:20 81 processes: 4 running, 77 sleeping CPU states: 70.4% user, 0.0% nice, 29.6% system, 0.0% interrupt, 0.0% idle Mem: 84M Active, 93M Inact, 38M Wired, 1176K Cache, 48M Buf, 157M Free Swap: 356M Total, 356M Free With your new scheduler the load averages were (approximately) 7.5, 5.5, 5. -- Steve To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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