Re: bad networking related lag in v2.6.22-rc2

[Ingo Molnar]

* Anant Nitya <kernel@xxxxxxxxxxxxxx> 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;
-
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