linux-rt-users.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Steven Rostedt <rostedt@goodmis.org>
To: Christoph Lameter <cl@linux.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	LKML <linux-kernel@vger.kernel.org>,
	RT <linux-rt-users@vger.kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Clark Williams <clark@redhat.com>,
	Pekka Enberg <penberg@kernel.org>
Subject: Re: [RT LATENCY] 249 microsecond latency caused by slub's unfreeze_partials() code.
Date: Thu, 11 Apr 2013 12:05:07 -0400	[thread overview]
Message-ID: <1365696307.9609.36.camel@gandalf.local.home> (raw)
In-Reply-To: <0000013db20ca149-0064fbb8-2f81-4323-9095-a38f6abb79c5-000000@email.amazonses.com>

On Thu, 2013-03-28 at 17:30 +0000, Christoph Lameter wrote:
> This patch requires the earlier bug fix.
> 
> 
> Subject: slub: Make cpu partial slab support configurable
> 
> cpu partial support can introduce level of indeterminism that is not wanted
> in certain context (like a realtime kernel). Make it configurable.
> 
> Signed-off-by: Christoph Lameter <cl@linux.com>
> 

Hi Christoph,

I was wondering if you made any more forward progress with with patch
yet. When it goes into mainline, I'd like to backport it to the -rt
stable trees, and will probably make it enabled by default when
PREEMPT_RT is enabled.

Thanks!

-- Steve

  parent reply	other threads:[~2013-04-11 16:05 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-21 22:55 [RT LATENCY] 249 microsecond latency caused by slub's unfreeze_partials() code Steven Rostedt
2013-03-22 15:41 ` Christoph Lameter
2013-03-23  3:51   ` Steven Rostedt
2013-03-25 14:34     ` Christoph Lameter
2013-03-25 15:57       ` Steven Rostedt
2013-03-25 16:13         ` Steven Rostedt
2013-03-25 17:51           ` Christoph Lameter
2013-03-25 18:03             ` Steven Rostedt
2013-03-25 18:27               ` Christoph Lameter
2013-03-25 18:32                 ` Steven Rostedt
2013-03-27  2:59                   ` Joonsoo Kim
2013-03-27  3:30                     ` Steven Rostedt
2013-03-27  6:13                       ` Joonsoo Kim
2013-03-28 17:29                         ` Christoph Lameter
2013-04-08 12:25                           ` Steven Rostedt
     [not found]                         ` <alpine.DEB.2.02.1303281227520.16200@gentwo.org>
2013-03-28 17:30                           ` Christoph Lameter
2013-03-29  2:43                             ` Paul Gortmaker
2013-04-01 15:32                               ` Christoph Lameter
2013-04-01 16:06                                 ` Paul Gortmaker
2013-04-02  0:07                                   ` Paul Gortmaker
2013-04-01 21:46                                 ` Paul Gortmaker
2013-04-02  1:37                                 ` Joonsoo Kim
     [not found]                               ` <alpine.DEB.2.02.1304011025550.12690@gentwo.org>
2013-04-01 15:33                                 ` Christoph Lameter
2013-04-02  0:42                                   ` Joonsoo Kim
2013-04-02  6:48                                     ` Pekka Enberg
2013-04-02 19:25                                     ` Christoph Lameter
2013-04-04  0:58                                       ` Joonsoo Kim
2013-04-04 13:53                                         ` Christoph Lameter
2013-04-05  2:05                                           ` Joonsoo Kim
2013-04-05 14:35                                             ` Christoph Lameter
2013-04-08 12:32                                     ` Steven Rostedt
2013-04-10  6:31                                       ` Pekka Enberg
2013-04-10  7:31                                         ` Joonsoo Kim
2013-04-10 14:00                                           ` Christoph Lameter
2013-04-10 14:09                                             ` Steven Rostedt
2013-04-11 16:05                             ` Steven Rostedt [this message]
2013-04-11 16:42                               ` Christoph Lameter
2013-04-12  6:48                                 ` Pekka Enberg
2013-05-28 14:39                             ` Steven Rostedt
2013-05-28 16:22                               ` Christoph Lameter
     [not found]                               ` <alpine.DEB.2.02.1305281121420.1627@gentwo.org>
2013-05-28 18:24                                 ` Christoph Lameter
2013-06-03 15:28                                   ` JoonSoo Kim
2013-06-03 19:20                                     ` Christoph Lameter
2013-06-04 22:21                                       ` JoonSoo Kim
2013-06-05 14:06                                         ` Christoph Lameter
2013-06-05 14:09                                         ` Christoph Lameter
2013-06-03 20:41                                     ` Christoph Lameter
2013-03-26 16:52       ` Steven Rostedt

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=1365696307.9609.36.camel@gandalf.local.home \
    --to=rostedt@goodmis.org \
    --cc=cl@linux.com \
    --cc=clark@redhat.com \
    --cc=iamjoonsoo.kim@lge.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-rt-users@vger.kernel.org \
    --cc=penberg@kernel.org \
    --cc=tglx@linutronix.de \
    /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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).