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From: "yunfeng zhang" <zyf.zeroos@gmail.com>
To: "Al Boldi" <a1426z@gawab.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2.6.20-rc5 1/1] MM: enhance Linux swap subsystem
Date: Tue, 23 Jan 2007 12:21:05 +0800	[thread overview]
Message-ID: <4df04b840701222021w5e1aaab2if2ba7fc38d06d64b@mail.gmail.com> (raw)
In-Reply-To: <200701222300.41960.a1426z@gawab.com>

>
> Patched against 2.6.19 leads to:
>
> mm/vmscan.c: In function `shrink_pvma_scan_ptes':
> mm/vmscan.c:1340: too many arguments to function `page_remove_rmap'
>
> So changed
>  page_remove_rmap(series.pages[i], vma);
> to
>  page_remove_rmap(series.pages[i]);
>

I've worked on 2.6.19, but when update to 2.6.20-rc5, the function is changed.

> But your patch doesn't offer any swap-performance improvement for both swsusp
> or tmpfs.  Swap-in is still half speed of Swap-out.
>
>
Current Linux page allocation fairly provides pages for every process, since
swap daemon only is started when memory is low, so when it starts to scan
active_list, the private pages of processes are messed up with each other,
vmscan.c:shrink_list() is the only approach to attach disk swap page to page on
active_list, as the result, all private pages lost their affinity on swap
partition. I will give a testlater...

  reply	other threads:[~2007-01-23  4:21 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-22  7:09 yunfeng zhang
2007-01-22 10:21 ` Pavel Machek
2007-01-22 20:00 ` Al Boldi
2007-01-23  4:21   ` yunfeng zhang [this message]
2007-01-23  5:08     ` yunfeng zhang
2007-01-24 21:15       ` Hugh Dickins
2007-01-26  4:58         ` yunfeng zhang
2007-01-29  5:29         ` yunfeng zhang
     [not found]         ` <4df04b840701301852i41687edfl1462c4ca3344431c@mail.gmail.com>
     [not found]           ` <Pine.LNX.4.64.0701312022340.26857@blonde.wat.veritas.com>
2007-02-13  5:52             ` yunfeng zhang
2007-02-20  9:06               ` yunfeng zhang
2007-02-22  1:58                 ` yunfeng zhang
2007-02-22  2:19                   ` Rik van Riel
2007-02-23  2:31                     ` yunfeng zhang
2007-02-23  3:33                       ` Rik van Riel
2007-02-25  1:47                         ` yunfeng zhang
2007-08-23  9:47                           ` yunfeng zhang
2007-08-23 15:56                             ` Randy Dunlap

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