From: Stephen Hemminger <stephen@networkplumber.org>
To: "Kinsella, Ray" <ray.kinsella@intel.com>
Cc: Antonio Di Bacco <a.dibacco.ks@gmail.com>,
"users@dpdk.org" <users@dpdk.org>
Subject: Re: DPDK on isolated cores but I still see interrupts
Date: Tue, 1 Mar 2022 08:37:46 -0800 [thread overview]
Message-ID: <20220301083746.39d6ec6b@hermes.local> (raw)
In-Reply-To: <PH0PR11MB47765EDB00614211641A649690029@PH0PR11MB4776.namprd11.prod.outlook.com>
On Tue, 1 Mar 2022 15:16:32 +0000
"Kinsella, Ray" <ray.kinsella@intel.com> wrote:
> Can you supply “cat /proc/cmdline” please?
>
> Ray K
>
> From: Antonio Di Bacco <a.dibacco.ks@gmail.com>
> Sent: Tuesday 1 March 2022 14:52
> To: users@dpdk.org
> Subject: DPDK on isolated cores but I still see interrupts
>
> I am trying to run a DPDK application on x86_64 Machine (Ubuntu 20.04) on isolated cores.
> I expected not to have interrupts on isolated cores but I still have a lot of CAL (Function call interrupts) interrupts and LOC interrupts (Local timer interrupts). Is there any setting in DPDK to stop those too?
>
> Regards.
Some other notes:
- don't use CPU 0. The kernel needs/wants to run things there
- You may need to change softirq and workqueue settings (see /sys/devices/virtual/workqueue)
next prev parent reply other threads:[~2022-03-01 16:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-01 14:52 Antonio Di Bacco
2022-03-01 15:16 ` Kinsella, Ray
2022-03-01 16:37 ` Stephen Hemminger [this message]
2022-03-01 15:31 ` Cliff Burdick
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