Messages in this thread | | | Date | Mon, 06 Jan 2003 13:26:15 -0600 | From | Brian Tinsley <> | Subject | Re: Gigabit/SMP performance problem |
| |
I've been able to distribute IRQ servicing to other processors on P4 Xeon HT systems as described in the IRQ-affinity.txt file in the kernel-source Documentation directory. Well, it shows up as doing so in /proc/interrupts anyway! Looks like CPUs 0, 2, 4, etc.. are the real processors and 1,3,5, etc.. are the logical processors (which do not handle interrupts).
Daniel Blueman wrote:
>Even with HT turned off on this dual-Xeon box, all IRQs are routed to CPU 0. > >Kernel here is the latest RedHat 2.4.18 one. > >Just curious what kernel Avery is running... > >Dan > > > >>On 4 Jan 2003, Daniel Blueman wrote: >> >> >> >>>It's interesting you have IRQs balanced over the two logical >>>processors. I can't get this on HT Xeons with stock RedHat 7.3 kernel. >>> >>> >>I think he's using two physical processors, if by "logical processors" you >>are thinking HT... I also recall he has HT off, but the original post >>isn't handy. >> >> >> >>>Can you post the exact kernel version string, please? >>> >>>TIA, >>> Dan >>> >>>"Avery Fay" <avery_fay@symantec.com> wrote in message >>> >>> >news:<OF256CD297.9F92C038-ON85256CA3.006A4034-85256CA3.00705DEA@symantec.com>... > > >>>>Dual Pentium 4 Xeon at 2.4 Ghz. I believe I am using irq load >>>> >>>> >>balancing as >> >> >>>>shown below (seems to be applied to Red Hat's kernel). Here's >>>>/proc/interrupts: >>>> >>>> >>-- >>bill davidsen <davidsen@tmr.com> >> CTO, TMR Associates, Inc >>Doing interesting things with little computers since 1979. >> >> >> > > >
--
-[========================]- -[ Brian Tinsley ]- -[ Chief Systems Engineer ]- -[ Emageon ]- -[========================]-
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |