linux-kernel - Re: No, really, stop trying to delete slab until you've finished making slub perform as well

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Message-ID: <2f11576a0808060536o53cabb93m6387d35e3e5791be@mail.gmail.com>
Date:	Wed, 6 Aug 2008 21:36:27 +0900
From:	"KOSAKI Motohiro" <kosaki.motohiro@...fujitsu.com>
To:	"Christoph Lameter" <cl@...ux-foundation.org>
Cc:	"Matthew Wilcox" <matthew@....cx>,
	"Pekka Enberg" <penberg@...helsinki.fi>, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	"Mel Gorman" <mel@...net.ie>, andi@...stfloor.org,
	"Rik van Riel" <riel@...hat.com>
Subject: Re: No, really, stop trying to delete slab until you've finished making slub perform as well

>>> Can you quantify the difference?
>>
>> machine spec:
>> CPU: IA64 x 8
>> MEM: 8G (4G x2node)
>
> 16k or 64k page size?

64k.


>> So, about 2.5G - 3G difference in 8G mem.
>
> Well not sure if that tells us much. Please show us the output of
> /proc/meminfo after each run. The slab counters indicate how much memory is
> used by the slabs.
>
> It would also be interesting to see the output of the slabinfo command after
> the slub run?

ok.
but i can't do that in this week.
so, I'll do it in next week.

honestly, I don't know how to use slabinfo command :-)
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