From: Mike Galbraith <umgwanakikbuti@gmail.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@elte.hu>, Steven Rostedt <rostedt@goodmis.org>
Subject: Re: RFC: futex_wait() can DoS the tick
Date: Thu, 11 Jun 2015 09:43:16 +0200 [thread overview]
Message-ID: <1434008596.3411.55.camel@gmail.com> (raw)
In-Reply-To: <1434008159.3411.50.camel@gmail.com>
On Thu, 2015-06-11 at 09:35 +0200, Mike Galbraith wrote:
> On Wed, 2015-06-10 at 17:12 +0200, Thomas Gleixner wrote:
>
> > I just booted a SNB with lapic=notscdeadline and ran that test
> > program. All what happens is - as expected - that ksoftirqd runs more
> > than we would like it to. I cannot observe any anomality vs. local
> > timer interrupts at all.
>
> Ditto on a E5-4620 box this morning, no sign of it. E5-2670 box I had
> verified "went away"
(dropped off the net on reboot, doesn't respond to remote button poking)
prev parent reply other threads:[~2015-06-11 7:43 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-10 12:44 RFC: futex_wait() can DoS the tick Mike Galbraith
2015-06-10 15:12 ` Thomas Gleixner
2015-06-10 16:29 ` Mike Galbraith
2015-06-10 18:27 ` Thomas Gleixner
2015-06-10 17:30 ` Mike Galbraith
2015-06-10 18:59 ` Thomas Gleixner
2015-06-10 19:15 ` Steven Rostedt
2015-06-10 19:32 ` Thomas Gleixner
2015-06-11 2:27 ` Mike Galbraith
2015-06-11 8:34 ` Thomas Gleixner
2015-06-11 11:41 ` Mike Galbraith
2015-06-11 13:13 ` Thomas Gleixner
2015-06-11 13:58 ` Mike Galbraith
2015-06-11 18:43 ` Mike Galbraith
2015-06-11 18:52 ` Thomas Gleixner
2015-06-11 18:55 ` Mike Galbraith
2015-06-11 7:35 ` Mike Galbraith
2015-06-11 7:43 ` Mike Galbraith [this message]
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