From: Omer Yamac <omer.yamac@ceng.metu.edu.tr>
To: Antonio Di Bacco <a.dibacco.ks@gmail.com>
Cc: users@dpdk.org
Subject: Re: Large interruptions for EAL thread running on isol core
Date: Thu, 23 Jun 2022 21:07:39 +0300 [thread overview]
Message-ID: <f0aedbfa50c2c07616c6032e501171e6@ceng.metu.edu.tr> (raw)
In-Reply-To: <CAO8pfF=yo37Ng5QAcopL=6LgKMHr4+=pPcONPATyS+OD0GLgfg@mail.gmail.com>
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?
next prev parent reply other threads:[~2022-06-23 18:07 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-23 18:03 Antonio Di Bacco
2022-06-23 18:07 ` Omer Yamac [this message]
2022-06-24 9:43 ` Antonio Di Bacco
2022-06-23 18:41 ` Stephen Hemminger
2022-06-24 9:45 ` Antonio Di Bacco
2022-06-24 10:43 ` Kinsella, Ray
2022-06-23 19:03 ` Carsten Andrich
2022-06-24 15:01 ` Stephen Hemminger
2022-06-24 15:41 ` Carsten Andrich
2022-06-24 16:42 ` Stephen Hemminger
2022-06-28 7:25 ` Carsten Andrich
2022-06-28 15:19 ` Stephen Hemminger
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