Re: [PATCH] VM: Implements the swap-out page-clustering technique

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From: Rik van Riel

Subject: Re: [PATCH] VM: Implements the swap-out page-clustering technique

Date: Thursday, September 4, 2008 - 4:14 pm

On Thu, 04 Sep 2008 15:34:30 +0330
"Hamid R. Jahanjou" <hamid.jahanjou@gmail.com> wrote:

quoted text> From: Hamid R. Jahanjou
> 
> Implements the idea of swap-out page clustering from *BSD for
> Linux. Each time a candidate page is to be swapped out,
> virtually-nearby pages are scanned to find eligible pages to be
> swapped out too as a cluster. This technique increases the likelihood of
> bringing in related data on a page fault and decreases swap space
> fragmentation in the long run. Currently, Linux searches only
> physically-nearby pages which is not optimal since, over time, physically-
> adjacent pages may become unrelated.
> 
> The code can be statically tuned. No benchmarks. I'm not sure whether
> the added complexity is acceptable.

It would be good to get some idea of what testing you have done
with this patch.

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Messages in current thread:

[PATCH] VM: Implements the swap-out page-clustering technique, Hamid R. Jahanjou, (Thu Sep 4, 5:04 am)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., Rik van Riel, (Thu Sep 4, 4:14 pm)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., Andrew Morton, (Thu Sep 4, 4:14 pm)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., Andrew Morton, (Thu Sep 4, 11:58 pm)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., Hamid R. Jahanjou, (Fri Sep 5, 12:45 am)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., Andi Kleen, (Fri Sep 5, 2:19 am)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., Andi Kleen, (Fri Sep 5, 12:45 pm)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., Hamid R. Jahanjou, (Fri Sep 5, 1:27 pm)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., Rik van Riel, (Fri Sep 5, 10:42 pm)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., Zan Lynx, (Sun Sep 7, 5:28 pm)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., Rik van Riel, (Sun Sep 7, 5:55 pm)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., Li Yu, (Sun Sep 7, 8:50 pm)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., hamidreza jahanjou, (Mon Sep 8, 2:51 am)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., Hamid R. Jahanjou, (Wed Sep 10, 1:16 am)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., Ray Lee, (Wed Sep 10, 10:08 am)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., Rik van Riel, (Wed Sep 10, 10:39 am)

Re: [PATCH] VM: Implements the swap-out page-clustering te ..., Luiz Fernando N. Cap ..., (Wed Sep 24, 6:56 am)

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