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Re: Linux disk caching
Thanks!
I tried using O_DIRECT, but made no difference. Searching gave me this link:
http://kerneltrap.org/node/view/2703
Does it really work?
-Tulsi Ram.
> 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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