By: anon2 (anon.delete@this.anon.com), April 4, 2021 3:08 pm
Room: Moderated Discussions
Foo_ (foo.delete@this.nomail.com) on April 4, 2021 12:58 pm wrote:
> Adrian (a.delete@this.acm.org) on April 4, 2021 11:50 am wrote:
> > Robert Williams (crispysilicon.delete@this.gmail.com) on April 3, 2021 4:33 pm wrote:
> > > https://www.amd.com/system/files/documents/security-analysis-predictive-store-forwarding.pdf
> > >
> > > Has anyone noted the difference in performance yet?
> >
> > https://www.phoronix.com/scan.php?page=article&item=amd-zen3-psf&num=1
> >
>
> Summary: PSF is worth at most 2% in performance, but close to 0% on most benchmarks.
>
Geomean of all tests puts it at nearly 0.4%. Quite significant.
Interesting that AMD has had such an escape after the spectre/meltdown papers.
> Adrian (a.delete@this.acm.org) on April 4, 2021 11:50 am wrote:
> > Robert Williams (crispysilicon.delete@this.gmail.com) on April 3, 2021 4:33 pm wrote:
> > > https://www.amd.com/system/files/documents/security-analysis-predictive-store-forwarding.pdf
> > >
> > > Has anyone noted the difference in performance yet?
> >
> > https://www.phoronix.com/scan.php?page=article&item=amd-zen3-psf&num=1
> >
>
> Summary: PSF is worth at most 2% in performance, but close to 0% on most benchmarks.
>
Geomean of all tests puts it at nearly 0.4%. Quite significant.
Interesting that AMD has had such an escape after the spectre/meltdown papers.
| Topic | Posted By | Date |
|---|---|---|
| Zen 3 Predictive Store Forwarding | Robert Williams | 2021/04/03 04:33 PM |
| Zen 3 Predictive Store Forwarding | Adrian | 2021/04/03 11:43 PM |
| Phoronix benchmark with PSF disabled | Adrian | 2021/04/04 11:50 AM |
| Phoronix benchmark with PSF disabled | Foo_ | 2021/04/04 12:58 PM |
| Phoronix benchmark with PSF disabled | anon2 | 2021/04/04 03:08 PM |