Re: dirty pages (Was: Re: [PATCH] Prevent large file writebackstarvation)

[Andrew Morton]

Johannes Stezenbach <js@xxxxxxxxxxx> wrote:
>
> On Mon, Feb 13, 2006, Andrew Morton wrote:
>  > Johannes Stezenbach <js@xxxxxxxxxxx> wrote:
>  > > Now copying a 700MB file makes "Dirty" go up to 350MB. It then
>  > > slowly decreases to 325MB and stays there.
>  > 
>  > It shouldn't.  Did you really leave it for long enough?
>  > 
>  > If you did, then why does it happen there and not here?
> 
>  Good question. I just repeated the execise, rebooted and
>  copied a 700MB file. After ~30min "Dirty" is down to ~130MB, and
>  continues to decrease very slowly.
> 
>  On my Desktop machine (P4 HT, 1G RAM) "Dirty" goes down near
>  zero after ~30sec, as expected.

Are you using any unusual mount options?

Which filesystem types are online (not that this should affect it...)
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