Date: Tue, 6 Mar 2007 09:20:07 GMT From: lbolmerg@web.de To: freebsd-bugs@FreeBSD.org Subject: Re: kern/109936: SMP kernel performance problem on FSC TX600 Message-ID: <200703060920.l269K7Hu027258@freefall.freebsd.org>
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The following reply was made to PR kern/109936; it has been noted by GNATS. From: lbolmerg@web.de To: remko@FreeBSD.org Cc: freebsd-gnats-submit@FreeBSD.org Subject: Re: kern/109936: SMP kernel performance problem on FSC TX600 Date: Tue, 06 Mar 2007 09:40:48 +0100 I used the kernel installed from CD. I also tried GENERIC with a few chan= ges. Scheduler used is 4BSD #diff MYSMP GENERIC 22,23c22,23 < #cpu I486=5FCPU < #cpu I586=5FCPU --- > cpu I486=5FCPU > cpu I586=5FCPU 25,42c25 < ident MYSMP <=20 < # maxusers 256 <=20 < # min(max(VM=5FKMEM=5FSIZE, Physical memory/VM=5FKMEM=5FSIZE=5FSCALE), VM=5FKMEM=5FSIZ= E=5FMAX)=20 < # is the total KVA space allocated for < # kmem=5Fmap. E.g. used by Soft Updates. < # For large memory machines (> 1GB RAM) VM=5FKMEM=5FSIZE=5FMAX should < # be set to at least 400M. < #options VM=5FKMEM=5FSIZE=3D(12*1024*1024) # 12 MB < #options VM=5FKMEM=5FSIZE=5FMAX=3D(200*1024*1024) # 200 MB < #options VM=5FKMEM=5FSIZE=5FSCALE=3D(3) # 1/3 RAM < options VM=5FKMEM=5FSIZE=5FMAX=3D(400*1024*1024) # 400 MB <=20 < options SMP <=20 < device acpi=5Ffujitsu <=20 --- > ident GENERIC It may also be interesting that 6.1 showed the same behaviour. 6.0 boots = from CD but hangs completely on the first sysinstall screen. Best regards, Ludger Bolmerg =20 > -----Urspr=FCngliche Nachricht----- > Von: remko@FreeBSD.org > Gesendet: 05.03.07 20:05:11 > An: Ludger Bolmerg <lbolmerg@web.de> > CC: freebsd-gnats-submit@FreeBSD.org > Betreff: Re: kern/109936: SMP kernel performance problem on FSC TX600 > Ludger Bolmerg wrote: > >> Number: 109936 > >> Category: kern > >> Synopsis: SMP kernel performance problem on FSC TX600 > >> Confidential: no > >> Severity: serious > >> Priority: high > >> Responsible: freebsd-bugs > >> State: open > >> Quarter: =20 > >> Keywords: =20 > >> Date-Required: > >> Class: sw-bug > >> Submitter-Id: current-users > >> Arrival-Date: Mon Mar 05 18:20:03 GMT 2007 > >> Closed-Date: > >> Last-Modified: > >> Originator: Ludger Bolmerg > >> Release: 6.2 > >> Organization: > >> Environment: > > FreeBSD bsd60.myname.de 6.2-RELEASE-p2 FreeBSD 6.2-RELEASE-p2 #1 > >> Description: > > I installed FreeBSD 6.2 on a Fujitsu Siemens TX600 S3 with 2 dual core= Xeon processors and 4G RAM. > > Here is the link to the data sheet of the server on Fujitsu-Siemens' W= eb page. It may be helpful > >=20 > > http://extranet.fujitsu-siemens.com/vil/pc/vil/primergy/model=5Fline=5F400= /rack=5Fserver/ds=5Fprim-rx600-s3.pdf > >=20 > > The SMP kernel is awfully slow. make buildkernel takes about 6 hours = to complete. When I boot a UP kernel the build completes within 12 minute= s. I don't see any unusual message in any log file. > >=20 > > Booting the SMP kernel with kern.smp.disabled=3D1 shows good performance= values. > >=20 > > When booting the SMP kernel with=20 > >=20 > > hint.lapic.10.disabled=3D1 > > hint.lapic.12.disabled=3D1 > > hint.lapic.14.disabled=3D1 > >=20 > > also results in good performance. Disabling single CPUs didn't work. = I had to apply a patch provided by John Baldwin. > > http://lists.freebsd.org/pipermail/freebsd-smp/2007-February/001320.ht= ml > >=20 > > Disabling all but one CPU also gives good performance. As soon as the = second CPU gets enabled it becomes slow again. > >=20 > >=20 > >=20 > >> How-To-Repeat: > > Install on same hardware > >> Fix: > >=20 > >> Release-Note: > >> Audit-Trail: > >> Unformatted: > > =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F > > freebsd-bugs@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-bugs > > To unsubscribe, send any mail to "freebsd-bugs-unsubscribe@freebsd.org= " >=20 > Can you tell us what your kernel configuration is=3F > What kind of scheduler do you use etc.. >=20 > Thanks! >=20 > --=20 > Kind regards, >=20 > Remko Lodder ** remko@elvandar.org > FreeBSD ** remko@FreeBSD.org >=20 > /* Quis custodiet ipsos custodes */ >=20 =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F XXL-Speicher, PC-Virenschutz, Spartarife & mehr: Nur im WEB.DE Club! =09 Jetzt gratis testen! http://freemail.web.de/home/landingpad/=3Fmc=3D021130
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