Date: Mon, 15 Mar 1999 17:13:20 +1030 From: Greg Lehey <grog@lemis.com> To: unknown@riverstyx.net, Gregory Sutter <gsutter@pobox.com> Cc: Andreas Klemm <andreas@klemm.gtn.com>, freebsd-chat@freebsd.org, de-bsd-chat@DE.FreeBSD.ORG Subject: Re: FreeBSD 3.1 SMP outperforms SuSE 6.0 SMP by factor 2.3 !!! Message-ID: <19990315171320.Y429@lemis.com> In-Reply-To: <Pine.LNX.4.04.9903141857450.18595-100000@hades.riverstyx.net>; from unknown@riverstyx.net on Sun, Mar 14, 1999 at 07:05:42PM -0800 References: <19990314184616.G20826@orcrist.mediacity.com> <Pine.LNX.4.04.9903141857450.18595-100000@hades.riverstyx.net>
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On Sunday, 14 March 1999 at 19:05:42 -0800, unknown@riverstyx.net wrote: > On Sun, 14 Mar 1999, Gregory Sutter wrote: > >> On Mon, Mar 15, 1999 at 12:15:21AM +0100, Andreas Klemm wrote: >>> See the links in my signature ... >>> >>> Enjoy it ... Linux brings 0% performance gain in the "stable" system >>> SMP arena ...... >>> >>> See : http://www.freebsd.org/~andreas/benches/index.html >>> http://www.FreeBSD.ORG/~fsmp/SMP/akgraph-a/graph1.html >> >> Well, if you wanted this to be really public, you picked the right way >> to go about it. Just wait until someone drops this onto the linux >> lists. I wonder what the signal:flame ratio will be. Bets, anyone, on >> time to slashdot, as well as the ratio? > > I don't have a problem with FreeBSD doing any better than Linux in SMP. > I'm going to use whatever OS gives me the best performance, and I'll > switch to FreeBSD for the majority of my servers in a second if it'll help > me. I'm fairly competent with both OS, even if I do have more experience > with Linux. I do however object to the testing methods here -- For one > thing, it doesn't look like the Linux kernel was actually recompiled in > SMP mode, 'coz I can build bash in that time in single processor mode :) I > definitely see massive improvements when I use a dual+ processor system > under Linux. SuSE, to the best of my knowledge, doesn't ship SMP kernels > in the default distribution. And of course, SuSE' STABLE kernel doesn't > mean much, since the distributions aren't tied to the kernel tree like > FreeBSD is. The 2.2.x series kernels are available, with upgrade > instructions on http://www.linuxhq.com if anyone feels like rerunning > those tests. I tend to agree. I could accept the statement "Linux SMP gives less performance than FreeBSD SMP". I can't accept the statement "Linux SMP gives no performance improvement". The first thing that came into my mind was "he must have made a mistake". Other possibilities are that make -j doesn't work right on Linux, or that Linux SMP doesn't even the load as well as FreeBSD does (for example, some MP systems put all children in the same CPU). Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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