Large interruptions for EAL thread running on isol core

[Antonio Di Bacco]

Yes, Hyperthreading is disabled.

On Thu, Jun 23, 2022 at 8:07 PM Omer Yamac <omer.yamac at ceng.metu.edu.tr> wrote:
>
> Hi Antonio,
>
> Did you try to disable logical cores on CPU?
>
> On 23.06.2022 21:03, Antonio Di Bacco wrote:
> > I'm running a DPDK thread on an isolated core. I also set some  flags
> > that could help keeping the core at rest on linux like: nosoftlockup
> > nohz_full rcu_nocbs irqaffinity.
> >
> > Unfortunately the thread gets some interruptions that stop the thread
> > for about 20-30 micro seconds. This seems smal but my application
> > suffers a lot.
> >
> > I also tried to use  rte_thread_set_priority that indeed has a strong
> > effect but unfortunately creates problems to Linux (like network not
> > working).
> >
> > Is there any other knob that could help running the DPDK thread with
> > minimum or no interruptions at all?