[llvm-dev] New LLD performance builder

[Galina Kistanova via llvm-dev]

Hi Rafael,

Thanks for mentioning this.

It should be running as root, but I'll double check anyway.

Thanks

Galina

On Mon, Mar 26, 2018 at 10:47 AM, Rafael Avila de Espindola <
rafael.espindola at gmail.com> wrote:

> Galina Kistanova <gkistanova at gmail.com> writes:
>
> > Disabling swap and having a single CPU in the shield group didn't change
> > much, besides cpu-migrations and context-switches, which now are 0
> > obviously.
> > That clustering remains the same. It is also stable to the number of runs
> > (I have changed the test to run 20 times in the middle of that range on
> the
> > right).
> >
> > http://lnt.llvm.org/db_default/v4/link/graph?
> highlight_run=426&plot.9=1.9.6
> >
> > Unless somebody has a good idea what else we should try, it seems we have
> > it as good as it could be with the current approach.
>
> I am benchmarking a patch and just remembered one thing: cset will only
> enable the shield if run as root, but it will still run the program
> outside otherwise.
>
> Is the benchmark being run as root? if not that might explain the large
> variations from run to run.
>
> Cheers,
> Rafael
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20180326/2c04c9e2/attachment.html>