Date: 14 Sep 2002 20:50:59 -0400 From: Paul James <paul.james@1u.ca> To: John Baldwin <jhb@FreeBSD.org> Cc: Doug White <dwhite@gumbysoft.com>, hackers@d.sparks.net, freebsd-hackers@freebsd.org Subject: Re: Dell 2650 SMP perf question Message-ID: <1032051059.35814.2.camel@panda.FreeBSDsystems.COM> In-Reply-To: <XFMail.20020912160922.jhb@FreeBSD.org> References: <XFMail.20020912160922.jhb@FreeBSD.org>
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Hi, I was told that this has something to do with the scheduler and, it is best to wait until the work on the scheduler is complete. This is not factual, and if it is incorrect, then please correct me. Regards, Paul On Thu, 2002-09-12 at 16:09, John Baldwin wrote: > > On 12-Sep-2002 Doug White wrote: > > On Wed, 11 Sep 2002, John Baldwin wrote: > > > >> > >> On 11-Sep-2002 Doug White wrote: > >> > Random notes: > >> > > >> > On Tue, 10 Sep 2002 hackers@d.sparks.net wrote: > >> > > >> >> Hyperthreading is turned off, I believe. There aren't any > >> >> "hyperthreading" swithes in the bios I could find, but the "logical > >> >> processor" option is turned off. > >> > > >> > HyperThreading is not supported on FreeBSD at current. It requires some > >> > ACPI work which hasn't happened yet. > >> > >> Not quite. It depends on the BIOS. Some BIOS's include logical CPU's > >> in the mptable, in which case FreeBSD will work with them fine. Some > >> only include logical CPU's in the APIC MADT which FreeBSD doesn't yet > >> use on i386 (we use it on ia64 and will eventually use it on i386 as > >> we need it for ACPI interrupt routing on SMP.) > > > > We went through this a few weeks ago ... I'm still trying to find a system > > who puts them in the mptable. :-) > > Look in the smp archives for people who had it work: > > http://docs.freebsd.org/cgi/getmsg.cgi?fetch=33677+0+archive/2002/freebsd-smp/20020630.freebsd-smp > > and > > http://docs.freebsd.org/cgi/getmsg.cgi?fetch=50804+0+archive/2002/freebsd-smp/20020512.freebsd-smp > > > Who's going to do the work? > > Probably myself since we need the MADT stuff to work for interrupt > routing to work under SMP with ACPI. > > -- > > John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ > "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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