[ovs-dev] [PATCH 0/5] Quicker pmd threads reloads
Ilya Maximets
i.maximets at samsung.com
Thu Jun 6 07:57:08 UTC 2019
On 06.06.2019 10:35, David Marchand wrote:
> Hello guys,
>
> On Thu, May 23, 2019 at 4:27 PM David Marchand <david.marchand at redhat.com <mailto:david.marchand at redhat.com>> wrote:
>
> We have been testing the rebalance code in different situations while
> having traffic going through OVS.
> Those tests have shown that part of the observed packets losses is due to
> some time wasted in signaling/waiting for the pmd threads to reload their
> polling configurations.
>
> This series is an attempt at getting pmd threads reloads quicker and
> more deterministic.
>
> Example of number of cycles spent by a pmd between two polling
> configurations (in cycles minimum/average/maximum of 1000 changes):
> - d58b59c17c70: 126822/312103/756580
> - patch1: 113658/296157/741688
> - patch2: 49198/167206/466108
> - patch3: 13032/120730/341163
> - patch4: 12803/112964/323455
> - patch5: 13633/ 20373/ 47410
>
> Changelog since RFC v2:
> - added ack from Eelco
> -
>
> Changelog since RFC v1:
> - added numbers per patch in cover letter
> - added memory ordering for explicit synchronisations between threads
> in patch 1 and patch 2
>
>
> I did not get feedback on this series apart from Eelco.
> Did you have a chance to look at it?
Hi David.
Sorry for delays. Patches seems fine at the first glance.
I hope to have some time next week to look closer and, probably,
test something.
Best regards, Ilya Maximets.
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