From: "Martin J. Bligh" <mbligh@aracnet.com>
To: Diego Calleja <diegocg@teleline.es>, Rik van Riel <riel@redhat.com>
Cc: raybry@sgi.com, marcelo.tosatti@cyclades.com, kernel@kolivas.org,
akpm@osdl.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org,
piggin@cyberone.com.au
Subject: Re: swapping and the value of /proc/sys/vm/swappiness
Date: Wed, 08 Sep 2004 14:10:32 -0700 [thread overview]
Message-ID: <36100000.1094677832@flay> (raw)
In-Reply-To: <20040908215008.10a56e2b.diegocg@teleline.es>
>> > For HPC, maybe. For a fileserver, it might be far too little. That's the
>> > trouble ... it's all dependant on the workload. Personally, I'd prefer
>> > to get rid of manual tweakables (which are a pain in the ass in the field
>> > anyway), and try to have the kernel react to what the customer is doing.
>>
>> Agreed. Many of these things should be self-tunable pretty
>> easily, too...
>
> I know this has been discussed before, but could a userspace daemon which
> autotunes the tweakables do a better job wrt. to adapting the kernel
> behaviour depending on the workload? Just like these days we have
> irqbalance instead of a in-kernel "irq balancer". It's a alternative
> worth of look at?
I really don't see any point in pushing the self-tuning of the kernel out
into userspace. What are you hoping to achieve?
M.
WARNING: multiple messages have this Message-ID (diff)
From: "Martin J. Bligh" <mbligh@aracnet.com>
To: Diego Calleja <diegocg@teleline.es>, Rik van Riel <riel@redhat.com>
Cc: raybry@sgi.com, marcelo.tosatti@cyclades.com, kernel@kolivas.org,
akpm@osdl.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org,
piggin@cyberone.com.au
Subject: Re: swapping and the value of /proc/sys/vm/swappiness
Date: Wed, 08 Sep 2004 14:10:32 -0700 [thread overview]
Message-ID: <36100000.1094677832@flay> (raw)
In-Reply-To: <20040908215008.10a56e2b.diegocg@teleline.es>
>> > For HPC, maybe. For a fileserver, it might be far too little. That's the
>> > trouble ... it's all dependant on the workload. Personally, I'd prefer
>> > to get rid of manual tweakables (which are a pain in the ass in the field
>> > anyway), and try to have the kernel react to what the customer is doing.
>>
>> Agreed. Many of these things should be self-tunable pretty
>> easily, too...
>
> I know this has been discussed before, but could a userspace daemon which
> autotunes the tweakables do a better job wrt. to adapting the kernel
> behaviour depending on the workload? Just like these days we have
> irqbalance instead of a in-kernel "irq balancer". It's a alternative
> worth of look at?
I really don't see any point in pushing the self-tuning of the kernel out
into userspace. What are you hoping to achieve?
M.
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next prev parent reply other threads:[~2004-09-08 21:11 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-06 19:11 swapping and the value of /proc/sys/vm/swappiness Ray Bryant
2004-09-06 20:10 ` Andrew Morton
2004-09-06 20:10 ` Andrew Morton
2004-09-06 21:22 ` Ray Bryant
2004-09-06 21:22 ` Ray Bryant
2004-09-06 21:36 ` Andrew Morton
2004-09-06 21:36 ` Andrew Morton
2004-09-06 22:37 ` William Lee Irwin III
2004-09-06 22:37 ` William Lee Irwin III
2004-09-06 23:51 ` Nick Piggin
2004-09-06 23:51 ` Nick Piggin
2004-09-07 0:31 ` Ray Bryant
2004-09-07 0:31 ` Ray Bryant
2004-09-06 22:48 ` William Lee Irwin III
2004-09-06 22:48 ` William Lee Irwin III
2004-09-06 23:09 ` Con Kolivas
2004-09-06 23:09 ` Con Kolivas
2004-09-06 23:27 ` Andrew Morton
2004-09-06 23:27 ` Andrew Morton
2004-09-06 23:34 ` Con Kolivas
2004-09-06 23:34 ` Con Kolivas
2004-09-07 0:03 ` Marcelo Tosatti
2004-09-07 0:03 ` Marcelo Tosatti
2004-09-07 1:34 ` Con Kolivas
2004-09-07 1:34 ` Con Kolivas
2004-09-07 10:38 ` Nick Piggin
2004-09-07 10:38 ` Nick Piggin
2004-09-07 10:56 ` Con Kolivas
2004-09-08 16:45 ` Marcelo Tosatti
2004-09-08 16:45 ` Marcelo Tosatti
2004-09-09 1:12 ` Con Kolivas
2004-09-07 17:03 ` Ray Bryant
2004-09-07 17:03 ` Ray Bryant
2004-09-07 21:20 ` Marcelo Tosatti
2004-09-07 21:20 ` Marcelo Tosatti
2004-09-08 2:18 ` Marcelo Tosatti
2004-09-08 2:18 ` Marcelo Tosatti
2004-09-08 14:20 ` Ray Bryant
2004-09-08 16:54 ` Marcelo Tosatti
2004-09-08 16:54 ` Marcelo Tosatti
2004-09-08 19:35 ` Ray Bryant
2004-09-08 19:35 ` Ray Bryant
2004-09-08 19:30 ` Marcelo Tosatti
2004-09-08 19:30 ` Marcelo Tosatti
2004-09-09 3:06 ` Ray Bryant
2004-09-09 3:06 ` Ray Bryant
2004-09-09 2:14 ` Marcelo Tosatti
2004-09-09 2:14 ` Marcelo Tosatti
2004-09-09 14:21 ` Ray Bryant
2004-09-09 14:21 ` Ray Bryant
2004-09-09 3:09 ` William Lee Irwin III
2004-09-09 3:09 ` William Lee Irwin III
2004-09-09 14:16 ` Ray Bryant
2004-09-09 17:23 ` William Lee Irwin III
2004-09-09 17:23 ` William Lee Irwin III
2004-09-28 1:54 ` Ray Bryant
2004-09-28 3:36 ` Nick Piggin
2004-09-28 3:36 ` Nick Piggin
2004-09-29 0:36 ` Nick Piggin
2004-09-29 4:23 ` Ray Bryant
2004-09-29 4:23 ` Ray Bryant
2004-09-30 17:15 ` Ray Bryant
2004-09-30 17:15 ` Ray Bryant
2004-09-08 17:31 ` Martin J. Bligh
2004-09-08 17:31 ` Martin J. Bligh
2004-09-08 18:04 ` Rik van Riel
2004-09-08 18:04 ` Rik van Riel
2004-09-08 19:50 ` Diego Calleja
2004-09-08 19:50 ` Diego Calleja
2004-09-08 21:10 ` Martin J. Bligh [this message]
2004-09-08 21:10 ` Martin J. Bligh
2004-09-08 21:55 ` Diego Calleja
2004-09-08 21:55 ` Diego Calleja
2004-09-08 22:20 ` Martin J. Bligh
2004-09-08 22:20 ` Martin J. Bligh
2004-09-08 23:22 ` Rik van Riel
2004-09-08 23:22 ` Rik van Riel
2004-09-09 16:26 ` Bill Davidsen
2004-09-08 22:28 ` Alan Cox
2004-09-08 22:28 ` Alan Cox
2004-09-08 23:42 ` Martin J. Bligh
2004-09-08 23:42 ` Martin J. Bligh
2004-09-08 19:54 ` Ray Bryant
2004-09-08 19:54 ` Ray Bryant
2004-09-08 15:19 ` Ray Bryant
2004-09-08 15:19 ` Ray Bryant
2004-09-14 18:31 ` Florin Andrei
2004-09-14 20:15 ` Marcelo Tosatti
2004-09-14 22:53 ` Con Kolivas
2004-09-14 21:41 ` Marcelo Tosatti
2004-09-15 0:22 ` Con Kolivas
2004-09-16 18:50 ` Marcelo Tosatti
2004-09-17 0:22 ` Con Kolivas
2004-09-15 16:54 ` Florin Andrei
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