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Date: Tue, 22 May 2007 08:22:33 +0200 From: Ingo Molnar <mingo@...e.hu> To: Anant Nitya <kernel@...chanda.info> Cc: linux-kernel@...r.kernel.org, Patrick McHardy <kaber@...sh.net>, Linus Torvalds <torvalds@...ux-foundation.org>, Andrew Morton <akpm@...ux-foundation.org>, Thomas Gleixner <tglx@...utronix.de>, "David S. Miller" <davem@...emloft.net> Subject: Re: bad networking related lag in v2.6.22-rc2 * Anant Nitya <kernel@...chanda.info> wrote: > > I think I already found the bug, please try if this patch helps. > > Sorry, but this patch is not helping here. I recompiled the kernel > with this patch but same load pattern still make system to crawl. > > Here is the link for script I use to shape traffic. > > http://cybertek.info/taitai/adslbwopt.sh could you also apply the fix for the softirq problem below, to make sure it does not interact? Ingo Index: linux/kernel/sched.c =================================================================== --- linux.orig/kernel/sched.c +++ linux/kernel/sched.c @@ -4212,9 +4212,7 @@ int __sched cond_resched_softirq(void) BUG_ON(!in_softirq()); if (need_resched() && system_state == SYSTEM_RUNNING) { - raw_local_irq_disable(); - _local_bh_enable(); - raw_local_irq_enable(); + local_bh_enable(); __cond_resched(); local_bh_disable(); return 1; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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