From: "Burakov, Anatoly" <anatoly.burakov@intel.com>
To: David Marchand <david.marchand@redhat.com>, dev@dpdk.org
Cc: olivier.matz@6wind.com, ktraynor@redhat.com, stable@dpdk.org
Subject: Re: [dpdk-stable] [PATCH] eal: restrict ctrl threads to startup cpu affinity
Date: Thu, 14 Feb 2019 09:39:44 +0000 [thread overview]
Message-ID: <e2c73723-8b2c-a12d-96cc-a141ef001c75@intel.com> (raw)
In-Reply-To: <1550074412-31285-1-git-send-email-david.marchand@redhat.com>
On 13-Feb-19 4:13 PM, David Marchand wrote:
> Spawning the ctrl threads on anything that is not part of the eal
> coremask is not that polite to the rest of the system.
>
> Rather than introduce yet another eal options for this, let's take
> the startup cpu affinity as a reference and remove the eal coremask
> from it.
> If no cpu is left, then we default to the master core.
>
> The cpuset is computed once at init before the original cpu affinity.
>
> Fixes: d651ee4919cd ("eal: set affinity for control threads")
> Signed-off-by: David Marchand <david.marchand@redhat.com>
> ---
Hi David,
Maybe i didn't have enough coffee today and i'm missing something here,
but how is this different? Removing the coremask cores from the cpuset
will effectively "spawn the ctrl threads on anything that is not part of
the EAL coremask" (which is "not that polite to the rest of the
system"), unless the application was run with taskset.
Is "taskset" the key point here? I.e. by default, we're still "not
polite", unless the user asks nicely? :)
--
Thanks,
Anatoly
next prev parent reply other threads:[~2019-02-14 9:39 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-13 16:13 David Marchand
2019-02-13 20:21 ` [dpdk-stable] [dpdk-dev] " David Marchand
2019-02-14 9:39 ` Burakov, Anatoly [this message]
2019-02-14 9:53 ` [dpdk-stable] " David Marchand
2019-02-14 10:04 ` Burakov, Anatoly
2019-02-14 10:16 ` David Marchand
2019-02-14 11:05 ` [dpdk-stable] [dpdk-dev] " David Marchand
2019-02-14 13:30 ` [dpdk-stable] [PATCH v2 1/2] eal: fix potential incorrect pinning for ctrl threads David Marchand
2019-02-14 13:30 ` [dpdk-stable] [PATCH v2 2/2] eal: restrict ctrl threads to startup cpu affinity David Marchand
2019-02-19 11:38 ` Burakov, Anatoly
2019-02-19 11:51 ` David Marchand
2019-02-19 16:03 ` Thomas Monjalon
2019-02-14 16:12 ` [dpdk-stable] [PATCH v2 1/2] eal: fix potential incorrect pinning for ctrl threads Burakov, Anatoly
2019-02-14 17:45 ` David Marchand
2019-02-19 20:41 ` [dpdk-stable] [PATCH v3 " David Marchand
2019-02-19 20:41 ` [dpdk-stable] [PATCH v3 2/2] eal: restrict ctrl threads to startup cpu affinity David Marchand
2019-02-20 16:01 ` Burakov, Anatoly
2019-02-25 8:33 ` Olivier Matz
2019-03-07 18:23 ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
2019-02-20 16:01 ` [dpdk-stable] [PATCH v3 1/2] eal: fix potential incorrect pinning for ctrl threads Burakov, Anatoly
2019-02-25 8:33 ` Olivier Matz
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