linux-kernel - Re: deadlock in scheduler enabling HRTICK feature

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Message-ID: <20130627203733.GC29209@dyad.programming.kicks-ass.net>
Date:	Thu, 27 Jun 2013 22:37:33 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	David Ahern <dsahern@...il.com>, Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>, tglx@...utronix.de
Subject: Re: deadlock in scheduler enabling HRTICK feature

On Thu, Jun 27, 2013 at 12:18:04PM -0700, Andy Lutomirski wrote:
> Supposedly, on really new x86 systems, the TSC deadline timer is so fast
> to reprogram that this isn't worth it.

>From what I've heard its not all that fast. I should play with it sometime, my
SNB desktop actually has this thing.
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