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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
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)

  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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