From: Steven Rostedt <rostedt@goodmis.org>
To: Christoph Lameter <cl@linux.com>
Cc: ksummit-discuss@lists.linuxfoundation.org
Subject: Re: [Ksummit-discuss] [TECH TOPIC] Mainlining PREEMPT_RT
Date: Thu, 15 Oct 2015 11:13:10 -0400 [thread overview]
Message-ID: <20151015111310.01903df1@gandalf.local.home> (raw)
In-Reply-To: <alpine.DEB.2.20.1510150903480.20958@east.gentwo.org>
On Thu, 15 Oct 2015 09:22:58 -0500 (CDT)
Christoph Lameter <cl@linux.com> wrote:
> I have no particular use case for my company in mind here. This is what I
> hear when talking to various companies in a number of different areas of
> computing that have tried preempt_rt.
Why are they telling you this and not us? Of course this may be people
that have different requirements.
Need a few microsecond latencies; Try Xenomai.
Need a few hundred microsecond latencies; PREEMPT_RT will do
Need no interference from the kernel; Use NO_HZ_FULL
Look, there's obviously users of PREEMPT_RT, so why are you trying to
kill it? If anything, PREEMPT_RT has made the mainline kernel cleaner.
Just because you don't see a use for it, doesn't mean one does not
exist.
-- Steve
next prev parent reply other threads:[~2015-10-15 15:13 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-13 16:42 Steven Rostedt
2015-10-13 17:33 ` Josh Triplett
2015-10-13 22:40 ` Rafael J. Wysocki
2015-10-13 22:19 ` Luis R. Rodriguez
2015-10-13 22:39 ` Steven Rostedt
2015-10-13 22:48 ` Luis R. Rodriguez
2015-10-13 23:04 ` Rafael J. Wysocki
2015-10-13 22:41 ` Luis R. Rodriguez
2015-10-14 7:35 ` Linus Walleij
2015-10-14 11:45 ` Christoph Lameter
2015-10-14 13:20 ` Steven Rostedt
2015-10-14 14:49 ` Christoph Lameter
2015-10-14 15:22 ` Steven Rostedt
2015-10-14 18:12 ` Christoph Lameter
2015-10-14 18:32 ` Steven Rostedt
2015-10-14 18:56 ` Christoph Lameter
2015-10-14 19:17 ` James Bottomley
2015-10-14 19:30 ` Tim Bird
2015-10-15 2:20 ` Steven Rostedt
2015-10-15 9:05 ` Thomas Gleixner
2015-10-14 20:24 ` Thomas Gleixner
2015-10-15 14:22 ` Christoph Lameter
2015-10-15 15:13 ` Steven Rostedt [this message]
2015-10-15 17:21 ` Jan Kara
2015-10-15 18:09 ` Steven Rostedt
2015-10-15 20:21 ` Thomas Gleixner
2015-10-15 20:37 ` Thomas Gleixner
2016-08-05 22:32 ` Darren Hart
2016-08-05 22:40 ` Darren Hart
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