William Lee Irwin III wrote:
>
> Paolo Ciarrocchi wrote:
> >> Hi all,
> >> I've just ran lmbench2.0 on my laptop.
> >> Here the results (again, 2.5.33 seems to be "slow", I don't know why...)
>
> On Sat, Sep 07, 2002 at 09:20:56AM -0700, Andrew Morton wrote:
> > The fork/exec/mmap slowdown is the rmap overhead. I have some stuff
> > which partialy improves it.
>
> Hmm, Where does it enter the mmap() path? PTE instantiation is only done
> for the VM_LOCKED case IIRC. Otherwise it should be invisible.
Oh, is that just the mmap() call itself?
> Perhaps testing with overcommit on would be useful.
Well yes - the new overcommit code was a significant hit on the 16ways
was it not? You have some numbers on that?
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sat Sep 07 2002 - 22:00:33 EST