[dpdk-stable] [dpdklab] RE: [dpdk-dev] [PATCH v4] mbuf: fix reset on mbuf free
Ferruh Yigit
ferruh.yigit at intel.com
Mon Jan 25 19:42:20 CET 2021
On 1/21/2021 4:35 PM, Lincoln Lavoie wrote:
> Hi All,
>
> Trying to follow the specific conversation. It is correct, the lab does not
> list the specific throughput values achieved by the hardware, as that data can
> be sensitive to the hardware vendors, etc. The purpose of the lab is to check
> for degradations caused by patches, so the difference is really the important
> factor. The comparison is against a prior run on the same hardware, via the
> DPDK main branch, so any delta should be caused by the specific patch changes
> (excluding statistical "wiggle").
>
> If the group would prefer, we could calculate additional references if desired
> (i.e. difference from the last official release, or a monthly run of the
> current, etc.). We just need the community to define their needs, and we can
> add this to the development queue.
>
Hi Brandon,
Can you also put above to the backlog, to display the performance difference to
the a fixed point, like a previous release or a previous LTS?
Thanks,
ferruh
> Cheers,
> Lincoln
>
>
> On Thu, Jan 21, 2021 at 4:29 AM Morten Brørup <mb at smartsharesystems.com
> <mailto:mb at smartsharesystems.com>> wrote:
>
> > From: dev [mailto:dev-bounces at dpdk.org <mailto:dev-bounces at dpdk.org>] On
> Behalf Of Ferruh Yigit
> > Sent: Thursday, January 21, 2021 10:19 AM
> >
> > On 1/15/2021 6:39 PM, Ali Alnubani wrote:
> > > Hi,
> > > Adding Ferruh and Zhaoyan,
> > >
> > >> Ali,
> > >>
> > >> You reported some performance regression, did you confirm it?
> > >> If I get no reply by monday, I'll proceed with this patch.
> > >
> > > Sure I'll confirm by Monday.
> > >
> > > Doesn't the regression also reproduce on the Lab's Intel servers?
> > > Even though the check iol-intel-Performance isn't failing, I can see
> > that the throughput differences from expected for this patch are less
> > than those of another patch that was tested only 20 minutes earlier.
> > Both patches were applied to the same tree:
> > >
> > > https://mails.dpdk.org/archives/test-report/2021-January/173927.html
> <https://mails.dpdk.org/archives/test-report/2021-January/173927.html>
> > >> | 64 | 512 | 1.571 |
> > >
> > > https://mails.dpdk.org/archives/test-report/2021-January/173919.html
> <https://mails.dpdk.org/archives/test-report/2021-January/173919.html>
> > >> | 64 | 512 | 2.698 |
> > >
> > > Assuming that pw86457 doesn't have an effect on this test, it looks
> > to me that this patch caused a regression in Intel hardware as well.
> > >
> > > Can someone update the baseline's expected values for the Intel NICs
> > and rerun the test on this patch?
> > >
> >
> > Zhaoyan said that the baseline is calculated dynamically,
> > what I understand is baseline set based on previous days performance
> > result, so
> > it shouldn't require updating.
>
> That sounds smart!
>
> Perhaps another reference baseline could be added, for informational
> purposes only:
> Deviation from the performance of the last official release.
>
> >
> > But cc'ed the lab for more details.
>
>
>
> --
> *Lincoln Lavoie*
> Senior Engineer, Broadband Technologies
> 21 Madbury Rd., Ste. 100, Durham, NH 03824
> lylavoie at iol.unh.edu <mailto:lylavoie at iol.unh.edu>
> https://www.iol.unh.edu <https://www.iol.unh.edu>
> +1-603-674-2755 (m)
> <https://www.iol.unh.edu>
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