Re: FW: Filesystem gets a huge performance boost

[Andrey A. Chernov]

On Thu, Apr 19, 2001 at 10:47:20 -0700, Matt Dillon wrote:
> :>     set that default in stone and prevent us from being able to change
> :>     it with a new kernel rev.  This being a *kernel* specific feature,
> :>     we need to have control over the default in the kernel itself.
> :
> :What about simple check in the kernel: if total memory is above 64Mb, then
> :enable this mode by default, else disable it.
> :
> :-- 
> :Andrey A. Chernov
> 
>     You are assuming that turning on vmiodirenable is detrimental on a
>     low-memory machine.  I don't think it is, because on a low memory
>     machine you aren't going to be able to cache very much anyway.  But if
>     anyone thinks it is please be my guest and test it on a low-memory 
>     machine on verses off.

Personally I not test this thing, just assume that current etc/sysctl.conf
comment about 64Mb limit is correct, i.e. assume that sysctl.conf commiter
already test it.

-- 
Andrey A. Chernov
http://ache.pp.ru/

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