Re: Paging out sleepy processes?

[Wang Yong <wung_y@263.net>]

why do u want to force it out. in my opinion, mm need to swap some process
out when the amount of physical
memory is under some limit.
MM will force it out if MM choose this process to swap out.if MM not choose
it, that's to say free memory is
enough or some other processes should be swapped out.

Jeff Garzik wrote:

> I have a simple app that I run locally that allocates and randomly
> dirties a lot of memory all at once, with the intention of forcing Linux
> to swap out processes.
>
> How possible/reasonable would it be to add a feature which will swap out
> processes that have been asleep for a long time?
>
> IMHO this behavior would default to off, but can be enabled by
> specifying the age at which the system should attempt to swap out
> processes:
>
>         # tell kernel to swap out processes which have been asleep
>         # longer than N seconds
>         echo 7200 > /proc/sys/vm/min_sleepy_swap
>
> Is there a way to do this already?
>
> Regards,
>
>         Jeff
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