From: Imre Gergely <imre.gergely@astral.ro>
To: Arjan van de Ven <arjan@infradead.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: irq balance problems?
Date: Tue, 21 Feb 2006 10:45:34 +0200 [thread overview]
Message-ID: <43FAD32E.3080608@astral.ro> (raw)
In-Reply-To: <1140509881.3082.18.camel@laptopd505.fenrus.org>
Arjan van de Ven wrote:
> On Tue, 2006-02-21 at 10:03 +0200, Imre Gergely wrote:
>> Arjan van de Ven wrote:
>>>> and irqbalance is not running, why aren't the interrupts coming from eth0
>>>> balanced between the two processors? at least that's what i understood from the
>>>> examples in Documentation/IRQ-affinity.txt. are there any other settings/kernel
>>>> parameters/compile option one has to set?
>>> it'll depend on the chipset. Some round-robin, some don't.
>>> For performance it's better to not round-robin.
>> is there a way to see for sure? or this behaviour is proof enough that it
>> doesn't do round-robin?
>
> it's pretty much proof to me already yes ;)
>
> (but why do you want round-robin? it's the worst setting for
> performance..... )
on one of the ethernet cards is much traffic, and there is htb (with many
classes and filters) used. because of this, one CPU is always on 95-100%, the
other is barely used. i wanted to see if it would improve performance if it did
balancing between the CPUs.
prev parent reply other threads:[~2006-02-21 8:45 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-21 7:47 irq balance problems? Imre Gergely
2006-02-21 7:56 ` Arjan van de Ven
2006-02-21 8:03 ` Imre Gergely
2006-02-21 8:18 ` Arjan van de Ven
2006-02-21 8:45 ` Imre Gergely [this message]
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