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Re: TAKE - add runtime configuration for pagebuf

To: linux-xfs@xxxxxxxxxxx
Subject: Re: TAKE - add runtime configuration for pagebuf
From: Thomas Graichen <news-innominate.list.sgi.xfs@xxxxxxxxxxxxx>
Date: 10 Aug 2000 14:59:48 GMT
Distribution: local
Organization: innominate AG, Berlin, Germany
References: <200008091813.NAA19452@jen.americas.sgi.com>
Reply-to: Thomas Graichen <graichen@xxxxxxxxxxxxx>
Reply-to: thomas.graichen@xxxxxxxxxxxxx
Sender: owner-linux-xfs@xxxxxxxxxxx
User-agent: tin/1.4.2-20000205 ("Possession") (UNIX) (Linux/2.2.16-local (i586))
Steve Lord <lord@xxxxxxx> wrote:
> This adds a new /proc/sys/vm/pagebuf interface which lets you
> tune a number of pagebuf parameters at runtime. The format is
> as follows:

> # cat /proc/sys/vm/pagebuf
> 100     1500    100     128     2048

> The numbers are, in order:

>  o sleep interval for the delayed write pagebuf thread - writes out
>    dirty metadata, value in HZ

>  o age of delayed write metadata buffers before they are written,
>    value in HZ

>  o sleep interval for page cleaner thread, value in HZ

>  o maximum cluster size of I/O for delayed allocation conversions,
>    value in pages.

>  o maximum delayed allocate pages allowed before page cleaner thread
>    woken up.

are those parameters (and all the other stuff behind /proc/fs/xfs)
anywhere documented ? - if not it would be a good idea to leave at
least a basic documentation of then in linux/Documentation/sysctl/

just an idea

t

-- 
thomas.graichen@xxxxxxxxxxxxx
technical director                                       innominate AG
clustering & security                                networking people
tel: +49.30.308806-13  fax: -77                   http://innominate.de

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