Howto avoid a process beeing paged out?

[Clemens Eisserer]

Hi,

I run a time-critical application on a vServer which seems to have very
little memory (even 512mb are guaranteed).
Every page that hasn't been accessed the last few minutes is immediatly
swapped out, and if a request comes in the system is busy many seconds
loading the working-set of the application into memory again.

Is there any way to prevent applications from beeing swapped out?
I tried to call mlock(), but after this call dynamically loading shared
libraries failed :/

Thanks, Clemens

[Tom Horsley]

On Mon, 12 Sep 2011 10:19:50 +0200
Clemens Eisserer wrote:

>  I tried to call mlock(), but after this call dynamically loading
> shared
>  libraries failed :/ 
mlock() is what you want, but it sounds like there isn't
enough memory to use mlock. I'd guess the server needs more memory
if it is going to run this critical app with no paging.

[Joe Wulf]

Bite bullet, add more physical memory.
For a time-critical process.... that seems like it is business critical, then do the right
business decision.  Purchase more memory to get the job done.

R,
-Joe Wulf




> ________________________________
> From: Clemens Eisserer <linuxhippy(a)gmail.com&gt;
> To: "Community assistance, encouragement, and advice for using Fedora."
> <fedora-list(a)redhat.com&gt;
> Sent: Monday, September 12, 2011 4:19 AM
> Subject: Howto avoid a process beeing paged out?
>
>
> Hi,
>
> I run a time-critical application on a vServer which seems to have very little memory
> (even 512mb are guaranteed).
> Every page that hasn't been accessed the last few minutes is immediatly swapped out,
> and if a request comes in the system is busy many seconds loading the working-set of the
> application into memory again.
>
> Is there any way to prevent applications from beeing swapped out?
> I tried to call mlock(), but after this call dynamically loading shared libraries failed
> :/
>
> Thanks, Clemens
>
> -- 
> users mailing list
> users(a)lists.fedoraproject.org
> To unsubscribe or change subscription options:
> https://admin.fedoraproject.org/mailman/listinfo/users
> Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
>
>
>