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From: Jeff Garzik <jeff@garzik.org>
To: Komuro <komurojun-mbn@nifty.com>
Cc: tglx@linutronix.de, linux-kernel@vger.kernel.org, mingo@elte.hu
Subject: Re: [SMP BUG]  [clockevents: i386 drivers patch]  introduces  irqbalance-does-not-work-properly problem
Date: Sat, 19 May 2007 23:03:56 -0400	[thread overview]
Message-ID: <464FBA9C.9090208@garzik.org> (raw)
In-Reply-To: <20070520111409.1793a2f6.komurojun-mbn@nifty.com>

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



  reply	other threads:[~2007-05-20  3:04 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1178202559.3767.21.camel@localhost.localdomain>
2007-05-04 14:32 ` [FW ide-cs] Re: jvc cdrom drive Komuro
2007-05-06 15:00   ` [FW ide-cs] Re: jvc cdrom drive lockup Richard Kennedy
2007-05-10  6:06     ` Zhang, Yanmin
2007-05-10 23:06       ` Andrew Morton
2007-05-13 11:04         ` [SMP BUG] kernel 2.6.21: irqbalance does not work properly Komuro
2007-05-20  2:14           ` [SMP BUG] [clockevents: i386 drivers patch] introduces irqbalance-does-not-work-properly problem Komuro
2007-05-20  3:03             ` Jeff Garzik [this message]
2007-05-20 10:42               ` Komuro
2007-05-20  7:09             ` Thomas Gleixner
2007-05-20 10:48               ` Komuro
2007-05-20 13:47                 ` Thomas Gleixner
2007-05-21 12:08                   ` Komuro

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