Re: Linux disk caching

[Learner <ruxyz@xxxxxxxxx>]

Hi ,

 Probably you can use the O_DIRECT flag to bypass the
cache subsystem .

Cheers!

 --- Tulsi Ram Mayala
<tulsi_rammayala@xxxxxxxxxxxxxxxx> wrote: > Thanks
Marc!
> This is a scary issue. I know that the files written
> by my application
> will not be read frequently (Only a very small
> percentage of them will be
> read). Can I programmatically OR using some system
> configuration, disable
> read cache on per file/process/systemwide basis?
> 
> -Tulsi Ram.
> 
> > On Wednesday 05 May 2004 03:04, Tulsi Ram Mayala
> wrote:
> >
> > Hi Tulsi,
> >
> >> I need some help to disable disk caching on Red
> Hat linux 7.2 (kernel
> >> 2.4).
> >> I run a server application on this system with 2
> Gigs of RAM. The server
> >> application does a lot of disk IO and with time,
> the linux system
> >> consumes
> >> all of available memory in cache and buffers thus
> leaving no space for
> >> the
> >> processes to grow. The system starts swapping and
> slows down my server
> >> application.
> >> I need some way to limit/disable the disk
> caching. My application does
> >> both disk read and write intensive operations.
> >> Any pointers will be appreciated.
> >> Thanx in advance.
> >
> > I don't know what Kernel RH 7.2 is using, but
> maybe it's all related to
> > this:
> >
> >
>
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=89226
> >
> > ciao, Marc
> >
> 
> 
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