Re: [patch 00/14] remap_file_pages protection support

[Blaisorblade <blaisorblade@yahoo.it>]

On Tuesday 02 May 2006 12:21, Arjan van de Ven wrote:
> > This will be useful since the VMA lookup at fault time can be a
> > bottleneck for some programs (I've received a report about this from
> > Ulrich Drepper and I've been told that also Val Henson from Intel is
> > interested about this).

> I've not seen much of this if any at all, the various caches that are in
> place for these lookups seem to function quite well; what we did see was
> glibc's malloc implementation being mistuned resulting in far too many
> mmaps than needed (which in turn leads to far too much page zeroing
> which is the really expensive part. It's not the vma lookup that is
> expensive, it's the page zeroing)
Even to this email, I hope Ulrich will answer.
-- 
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
http://www.user-mode-linux.org/~blaisorblade
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