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From: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel@vger.kernel.org, Paul Menage <menage@google.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Mike Galbraith <efault@gmx.de>
Subject: Re: [PATCH] accelerate newidle balancing in relax_domain
Date: Thu, 13 Nov 2008 20:58:07 +0900	[thread overview]
Message-ID: <491C164F.4030907@jp.fujitsu.com> (raw)
In-Reply-To: <20081113111040.GA26461@elte.hu>

Ingo Molnar wrote:
> I agree with making it more sensitive to momentary load fluctuations. 
> (as long as other metrics do not degrade).
> 
> But this solutin basically overrides the newidle_idx tuning in 
> topology.h.
> 
> Is there a strong reason to do this tuning dynamically, or could we 
> just decrease newidle_idx in the appropriate templates in the 
> topology.h files?

IMHO topology.h should have proper values that will fit 'standard'
system usage.  I'm not sure that the current values (such as 2 in
SD_NODE) is best number or not... And I think it can differ by archs.

If there are no features that will be affected by the changing
default newidle_idx values, then we can fix it in the templates.
It would be a strong reason - I don't like regression :-)


Thanks,
H.Seto


      reply	other threads:[~2008-11-13 11:58 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-11-13 11:05 [PATCH] accelerate newidle balancing in relax_domain Hidetoshi Seto
2008-11-13 11:10 ` Ingo Molnar
2008-11-13 11:58   ` Hidetoshi Seto [this message]

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