I'm adding @Wenying Dong <wenying.d...@broadcom.com> , from the Antrea team
to the thread who might know the answer to your questions..
It might be useful to some information about ovs usage i.e. "ovs-appctl
{dpctl/show,dpctl/dump-flows,coverage/show", also the vswitchd/ovsdb logs.
--
Alin
On Fri, Jul 12, 2024 at 7:45 AM Kraus, Alois <
alois.kr...@siemens-healthineers.com> wrote:
> Hi,
>
>
>
> the problem is that I have no debug symbols and the libraries have no
> version information compiled into them so I cannot even ask for pdbs for a
> specific version.
>
> Should I get pdbs from VMWare or do they supply symbols for these things
> somewhere e.g. a symbol server?
>
>
>
> Yours,
>
> Alois Kraus, Alois (SHS DI SY R&D AS SE)
>
>
>
>
>
> *From:* Alin Serdean <alinserd...@gmail.com>
> *Sent:* Thursday, July 11, 2024 5:00 PM
> *To:* Eelco Chaudron <echau...@redhat.com>
> *Cc:* Kraus, Alois <alois.kr...@siemens-healthineers.com>;
> b...@openvswitch.org
> *Subject:* Re: [ovs-discuss] High CPU of ovs-vswitchd.exe
>
>
>
> You don't often get email from alinserd...@gmail.com. Learn why this is
> important <https://aka.ms/LearnAboutSenderIdentification>
>
> FWIW the windows datapath does not have megaflows implemented.
>
> The expectation is to have a huge number of DP flows on a busy system.
>
>
>
> --
>
> Alin.
>
>
>
> On Thu, Jul 11, 2024 at 2:12 PM Eelco Chaudron via discuss <
> ovs-discuss@openvswitch.org> wrote:
>
>
>
> On 11 Jul 2024, at 11:42, Kraus, Alois via discuss wrote:
>
> > Hi,
> >
> > is this the right place to report this? I have observed pretty high CPU
> of ovs-vswitchd.exe even when the (Tanzu) VM is idle.
> > It seems to poll every 500ms on 4 threads for 70ms
> >
> > [cid:image001.png@01DAD387.07AFD320]
> >
> >
> > [cid:image002.png@01DAD387.07AFD320]
> >
> >
> > This seems to be consumed by PThreadVC2 library which most likely does
> an excessive amount of CPU spinning just to find that no one did wake up.
> CPU spinning is meant for Spinlocks in the range of sub ms or a few ms at
> most but not for such long times.
> >
> > [cid:image003.png@01DAD387.616F9800]
> >
> >
> > Where can I report this one? We would like to do something more useful
> with our cores than CPU spinning.
>
> 500ms sounds like the revalidator threads kicking in. If there are no DP
> rules, it should not take much CPU (at least on the Linux builds). If you
> are sure it’s all in the PThreadVC2 library, digging into that part might
> be the best next step. Sorry, I have no experience with the windows builds.
>
> //Eelco
>
> > Yours,
> > Alois
>
> > _______________________________________________
> > discuss mailing list
> > disc...@openvswitch.org
> > https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
>
> _______________________________________________
> discuss mailing list
> disc...@openvswitch.org
> https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
>
>
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