Date: Wed, 22 Sep 2010 09:48:39 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-stable@freebsd.org Cc: Adam Vande More <amvandemore@gmail.com>, Bryce <bryce@bryce.net>, Peter Jeremy <peterjeremy@acm.org>, Jeremy Chadwick <freebsd@jdc.parodius.com> Subject: Re: SuperMicro i7 (UP) - very slow performance Message-ID: <201009220948.39309.jhb@freebsd.org> In-Reply-To: <20100922084310.GA6760@icarus.home.lan> References: <AANLkTin2XH8Gs0ytgHsuF50iUJ3JFQU_OO3xSRfq3-C8@mail.gmail.com> <AANLkTimRpatbjTcpdBT6EV1Jb2U3ake4me7YPxHhwO7K@mail.gmail.com> <20100922084310.GA6760@icarus.home.lan>
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On Wednesday, September 22, 2010 4:43:10 am Jeremy Chadwick wrote: > On Wed, Sep 22, 2010 at 03:30:33AM -0500, Adam Vande More wrote: > > On Wed, Sep 22, 2010 at 3:12 AM, Peter Jeremy <peterjeremy@acm.org> wrote: > > > > > I think something is badly wrong here. That's less than 1/2 the speed > > > of my Athlon 4850e (2.5GHz) and only 60% more than my Atom N270. None > > > of the other figures you posted look anomolous. Are you sure the CPU > > > is actually running at full speed and you haven't done something like > > > disable the caches in BIOS? > > > > > > > FWIW: > > > > FreeBSD galacticdominator.com 8.1-PRERELEASE FreeBSD 8.1-PRERELEASE #1: Sun > > Jun 20 21:05:37 CDT 2010 > > adam@galacticdominator.com:/usr/obj/usr/src/sys/GENERIC > > amd64 > > CPU: Intel(R) Core(TM) i7 CPU 870 @ 2.93GHz (2940.64-MHz K8-class > > CPU) > > > > MD5 time trial. Digesting 100000 10000-byte blocks ... done > > Digest = 766a2bb5d24bddae466c572bcabca3ee > > Time = 2.012719 seconds > > Speed = 496840352.000000 bytes/second > > > > vmstat > > -i > > > > interrupt total > > rate > > > > irq16: vgapci0+ 10720642 54 > > irq18: fwohci0 2 0 > > irq23: ehci1 623712 3 > > cpu0: timer 393496151 1996 > > irq256: hdac0 8063581 40 > > irq257: re0 4136265 20 > > irq259: ahci1 1925783 9 > > cpu1: timer 393494902 1996 > > cpu6: timer 393494606 1996 > > cpu5: timer 393494653 1996 > > cpu7: timer 393494701 1996 > > cpu4: timer 393494785 1996 > > cpu3: timer 393494732 1996 > > cpu2: timer 393494404 1996 > > Total 3173428919 16102 > > > > His interrupts seem high compared to this setup, but I don't what expected > > values should be. > > How are his interrupt rates "higher" than yours? If you're focused on > the cpuX entries, don't be. > > To the OP: > > 1) I don't see how/why USB Legacy support would have anything to do with > your problem (meaning: you stated that things "improved a little" if you > disabled USB Legacy support in the BIOS, which makes no sense given what > that option does). Actually, if he does not have any USB drivers loaded then it means that the BIOS is triggering an SMI# at least once a second. It would not explain all of his problem, but it might have a small effect. -- John Baldwin
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