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From: Al Boldi <a1426z@gawab.com>
To: ngupta@vflare.org, Hugh Dickins <hugh.dickins@tiscali.co.uk>
Subject: compcache as a pre-swap area (was: [PATCH] swap: send callback when swap slot is freed)
Date: Thu, 13 Aug 2009 08:05:36 +0300
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Cc: Matthew Wilcox <willy@linux.intel.com>, Ingo Molnar <mingo@elte.hu>,
       Peter Zijlstra <peterz@infradead.org>, linux-kernel@vger.kernel.org,
       linux-mm@kvack.org
References: <200908122007.43522.ngupta@vflare.org> <Pine.LNX.4.64.0908122312380.25501@sister.anvils> <4A837D5A.3070407@vflare.org>
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Nitin Gupta wrote:
> BTW, last time compcache was not accepted due to lack of performance
> numbers. Now the project has lot more data for various cases:
> http://code.google.com/p/compcache/wiki/Performance
> Still need to collect data for worst-case behaviors and such...

I checked the link, and it looks like you are positioning compcache as a swap 
replacement.  If so, then repositioning it as a compressed pre-swap area 
working together with normal swap-space, if available, may yield a much more 
powerful system.


Thanks!

--
Al


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From: Al Boldi <a1426z@gawab.com>
Subject: compcache as a pre-swap area (was: [PATCH] swap: send callback when swap slot is freed)
Date: Thu, 13 Aug 2009 08:05:36 +0300
References: <200908122007.43522.ngupta@vflare.org> <Pine.LNX.4.64.0908122312380.25501@sister.anvils> <4A837D5A.3070407@vflare.org>
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To: ngupta@vflare.org, Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: Matthew Wilcox <willy@linux.intel.com>, Ingo Molnar <mingo@elte.hu>, Peter Zijlstra <peterz@infradead.org>, linux-kernel@vger.kernel.org, linux-mm@kvack.org
List-ID: <linux-mm.kvack.org>

Nitin Gupta wrote:
> BTW, last time compcache was not accepted due to lack of performance
> numbers. Now the project has lot more data for various cases:
> http://code.google.com/p/compcache/wiki/Performance
> Still need to collect data for worst-case behaviors and such...

I checked the link, and it looks like you are positioning compcache as a swap 
replacement.  If so, then repositioning it as a compressed pre-swap area 
working together with normal swap-space, if available, may yield a much more 
powerful system.


Thanks!

--
Al

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