All of lore.kernel.org
 help / color / mirror / Atom feed
From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: Bruce Richardson <bruce.richardson@intel.com>,
	Jianfeng Tan <jianfeng.tan@intel.com>
Cc: dev@dpdk.org, david.marchand@6wind.com, pmatilai@redhat.com,
	stephen@networkplumber.org
Subject: Re: [PATCH v3] eal: restrict cores detection
Date: Fri, 16 Sep 2016 16:04:06 +0200	[thread overview]
Message-ID: <10166504.1OkXfxRTa7@xps13> (raw)
In-Reply-To: <20160902165310.GA20356@bricha3-MOBL3>

2016-09-02 17:53, Bruce Richardson:
> On Thu, Sep 01, 2016 at 01:31:47AM +0000, Jianfeng Tan wrote:

It would help the discussion to have a problem statement here.

> > This patch uses pthread_getaffinity_np() to narrow down detected
> > cores before parsing coremask (-c), corelist (-l), and coremap
> > (--lcores).
> > 
> > The purpose of this patch is to leave out these core related options
> > when DPDK applications are deployed under container env, so that
> > users only specify core restriction as starting the instance.
> > 
> > Note: previously, some users are using isolated CPUs, which could
> > be excluded by default. Please add commands like taskset to use
> > those cores.
> > 
> > Test example:
> > $ taskset 0xc0000 ./examples/helloworld/build/helloworld -m 1024
> > 
> 
> So, to be clear, does this patch mean that DPDK cannot use isolated cores
> any more unless you explicitly run the app using taskset?
> Is so, NAK, since isolating cores has been part of standard DPDK setup since
> the first versions, and I don't believe that we should break that behaviour.

So how could we help the container use-case?
Any suggestions?

  reply	other threads:[~2016-09-16 14:04 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-24 18:49 [RFC] eal: add cgroup-aware resource self discovery Jianfeng Tan
2016-01-25 13:46 ` Neil Horman
2016-01-26  2:22   ` Tan, Jianfeng
2016-01-26 14:19     ` Neil Horman
2016-01-27 12:02       ` Tan, Jianfeng
2016-01-27 17:30         ` Neil Horman
2016-01-29 11:22 ` [PATCH] eal: make resource initialization more robust Jianfeng Tan
2016-02-01 18:08   ` Neil Horman
2016-02-22  6:08   ` Tan, Jianfeng
2016-02-22 13:18     ` Neil Horman
2016-02-28 21:12   ` Thomas Monjalon
2016-02-29  1:50     ` Tan, Jianfeng
2016-03-04 10:05 ` [PATCH] eal: add option --avail-cores to detect lcores Jianfeng Tan
2016-03-08  8:54   ` Panu Matilainen
2016-03-08 17:38     ` Tan, Jianfeng
2016-03-09 13:05       ` Panu Matilainen
2016-03-09 13:53         ` Tan, Jianfeng
2016-03-09 14:01           ` Ananyev, Konstantin
2016-03-09 14:17             ` Tan, Jianfeng
2016-03-09 14:44               ` Ananyev, Konstantin
2016-03-09 14:55                 ` Tan, Jianfeng
2016-03-09 15:17                   ` Ananyev, Konstantin
2016-03-09 17:45                     ` Tan, Jianfeng
2016-03-09 19:33                       ` Ananyev, Konstantin
2016-03-10  1:36                         ` Tan, Jianfeng
2016-05-18 12:46         ` David Marchand
2016-05-19  2:25           ` Tan, Jianfeng
2016-06-30 13:43             ` Thomas Monjalon
2016-07-01  0:52               ` Tan, Jianfeng
2016-04-26 12:39   ` Tan, Jianfeng
2016-03-04 10:58 ` [PATCH] eal: make hugetlb initialization more robust Jianfeng Tan
2016-03-08  1:42   ` [PATCH v2] " Jianfeng Tan
2016-03-08  8:46     ` Tan, Jianfeng
2016-05-04 11:07     ` Sergio Gonzalez Monroy
2016-05-04 11:28       ` Tan, Jianfeng
2016-05-04 12:25     ` Sergio Gonzalez Monroy
2016-05-09 10:48   ` [PATCH v3] " Jianfeng Tan
2016-05-10  8:54     ` Sergio Gonzalez Monroy
2016-05-10  9:11       ` Tan, Jianfeng
2016-05-12  0:44   ` [PATCH v4] " Jianfeng Tan
2016-05-17 16:39     ` David Marchand
2016-05-18  7:56       ` Sergio Gonzalez Monroy
2016-05-18  9:34         ` David Marchand
2016-05-19  2:00       ` Tan, Jianfeng
2016-05-17 16:40     ` Thomas Monjalon
2016-05-18  8:06       ` Sergio Gonzalez Monroy
2016-05-18  9:38         ` David Marchand
2016-05-19  2:11         ` Tan, Jianfeng
2016-05-31  3:37 ` [PATCH v5] eal: fix allocating all free hugepages Jianfeng Tan
2016-06-06  2:49   ` Pei, Yulong
2016-06-08 11:27   ` Sergio Gonzalez Monroy
2016-06-30 13:34     ` Thomas Monjalon
2016-08-31  3:07 ` [PATCH v2] eal: restrict cores detection Jianfeng Tan
2016-08-31 15:30   ` Stephen Hemminger
2016-09-01  1:15     ` Tan, Jianfeng
2016-09-01  1:31 ` [PATCH v3] " Jianfeng Tan
2016-09-02 16:53   ` Bruce Richardson
2016-09-16 14:04     ` Thomas Monjalon [this message]
2016-09-16 14:02   ` Thomas Monjalon
2016-12-02 17:48   ` [PATCH v4] eal: restrict cores auto detection Jianfeng Tan
2016-12-08 18:19     ` Thomas Monjalon
2016-12-09 15:14       ` Bruce Richardson
2016-12-21 14:31         ` Thomas Monjalon

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=10166504.1OkXfxRTa7@xps13 \
    --to=thomas.monjalon@6wind.com \
    --cc=bruce.richardson@intel.com \
    --cc=david.marchand@6wind.com \
    --cc=dev@dpdk.org \
    --cc=jianfeng.tan@intel.com \
    --cc=pmatilai@redhat.com \
    --cc=stephen@networkplumber.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.