Re: [PATCH 0/4] linux-2.6-block: deactivating pagecache for benchmarks

Rob Landley
2005-12-05T17:29:04Z

On Monday 05 December 2005 10:20, Lee Revell wrote:

> > > Caveats:
> > >
> > > a) Holds inode_lock for exorbitant amounts of time.
> >
> > Voluntary preemption point, maybe?
>
> I thin it's a bad idea, that would just encourage people to use this for
> anything other than debugging. If you care about latency don't discard
> the page cache.
>
> The GNOME people have been asking for this for a while, in order to
> improve startup times, they would like a way to simulate a cold start
> without rebooting.

I was thinking that virtual environments (namely, User Mode Linux) could use
this in conjunction with sys_punch to free up memory back to the host system.

> Lee

Rob
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