linux-kernel - Re: [SMP BUG] [clockevents: i386 drivers patch] introduces irqbalance-does-not-work-properly problem

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Date:	Sun, 20 May 2007 19:42:33 +0900
From:	Komuro <komurojun-mbn@...ty.com>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	tglx@...utronix.de, linux-kernel@...r.kernel.org, mingo@...e.hu
Subject: Re: [SMP BUG]  [clockevents: i386 drivers patch]  introduces 
 irqbalance-does-not-work-properly problem

On Sat, 19 May 2007 23:03:56 -0400
Jeff Garzik <jeff@...zik.org> wrote:


> Do you mean userspace irqbalance daemon?

Yes. I mean userspace irqbalance daemon.


Best Regards
Komuro

> Komuro wrote:
> > [clockevents: i386 drivers patch] introduces
> >   irqbalance-does-not-work-properly problem.
> > 
> >  
> > (The irq is not distributed to two Core
> >   ,most of the irq is distributed to CPU1)
> >  
> > 
> >  Mr. Thomas Gleixner,
> >  any idea to fix this problem?
> 
> Do you mean userspace irqbalance daemon?
> 
> It might need to be modified to work properly with a new and unusual 
> event source.
> 
> Also, for some irq events, it may be good to send most interrupts to one 
> core/CPU.  That enhances caching effects, among other benefits.  Again, 
> this is highly dependent on the event source, I'm not saying that is the 
> case here.
> 
> Regards,
> 
> 	Jeff
> 
> 
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