From: Steven Rostedt <rostedt@goodmis.org>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org,
mingo@elte.hu, akpm@linux-foundation.org, dipankar@in.ibm.com,
josht@linux.vnet.ibm.com, tytso@us.ibm.com, dvhltc@us.ibm.com,
tglx@linutronix.de, a.p.zijlstra@chello.nl, bunk@kernel.org,
ego@in.ibm.com, oleg@tv-sign.ru, srostedt@redhat.com
Subject: Re: [PATCH RFC 3/9] RCU: Preemptible RCU
Date: Fri, 21 Sep 2007 21:19:22 -0400 (EDT) [thread overview]
Message-ID: <Pine.LNX.4.58.0709212115160.4791@gandalf.stny.rr.com> (raw)
In-Reply-To: <20070922003235.GJ9059@linux.vnet.ibm.com>
--
On Fri, 21 Sep 2007, Paul E. McKenney wrote:
> >
> > In any case, I will be looking at the scenarios more carefully. If
> > it turns out that GP_STAGES can indeed be cranked down a bit, well,
> > that is an easy change! I just fired off a POWER run with GP_STAGES
> > set to 3, will let you know how it goes.
>
> The first attempt blew up during boot badly enough that ABAT was unable
> to recover the machine (sorry, grahal!!!). Just for grins, I am trying
> it again on a machine that ABAT has had a better record of reviving...
This still frightens the hell out of me. Going through 15 states and
failing. Seems the CPU is holding off writes for a long long time. That
means we flipped the counter 4 times, and that still wasn't good enough?
Maybe I'll boot up my powerbook to see if it has the same issues.
Well, I'm still finishing up on moving into my new house, so I wont be
available this weekend.
Thanks,
-- Steve
next prev parent reply other threads:[~2007-09-22 1:19 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-10 18:30 [PATCH RFC 0/9] RCU: Preemptible RCU Paul E. McKenney
2007-09-10 18:32 ` [PATCH RFC 1/9] RCU: Split API to permit multiple RCU implementations Paul E. McKenney
2007-09-21 4:14 ` Steven Rostedt
2007-09-10 18:33 ` [PATCH RFC 2/9] RCU: Fix barriers Paul E. McKenney
2007-09-10 18:34 ` [PATCH RFC 3/9] RCU: Preemptible RCU Paul E. McKenney
2007-09-21 4:17 ` Steven Rostedt
2007-09-21 5:50 ` Paul E. McKenney
2007-09-21 5:56 ` Dipankar Sarma
2007-09-21 14:40 ` Steven Rostedt
2007-09-21 15:46 ` Peter Zijlstra
2007-09-21 22:06 ` Paul E. McKenney
2007-09-21 22:31 ` Steven Rostedt
2007-09-21 22:44 ` Paul E. McKenney
2007-09-21 23:23 ` Steven Rostedt
2007-09-21 23:44 ` Paul E. McKenney
2007-09-22 0:26 ` Paul E. McKenney
2007-09-22 1:15 ` Steven Rostedt
2007-09-22 1:53 ` Paul E. McKenney
2007-09-22 3:15 ` Steven Rostedt
2007-09-22 4:07 ` Paul E. McKenney
2007-09-21 15:20 ` Steven Rostedt
2007-09-21 23:03 ` Paul E. McKenney
2007-09-22 0:32 ` Paul E. McKenney
2007-09-22 1:19 ` Steven Rostedt [this message]
2007-09-22 1:43 ` Paul E. McKenney
2007-09-22 2:56 ` Steven Rostedt
2007-09-22 4:10 ` Paul E. McKenney
2007-09-23 17:38 ` Oleg Nesterov
2007-09-24 0:15 ` Paul E. McKenney
2007-09-26 15:13 ` Oleg Nesterov
2007-09-27 15:46 ` Paul E. McKenney
2007-09-28 14:47 ` Oleg Nesterov
2007-09-28 18:57 ` Paul E. McKenney
2007-09-30 16:31 ` Oleg Nesterov
2007-09-30 23:02 ` Davide Libenzi
2007-10-01 1:37 ` Paul E. McKenney
2007-10-01 18:44 ` Davide Libenzi
2007-10-01 19:21 ` Paul E. McKenney
2007-10-01 22:09 ` Davide Libenzi
2007-10-01 22:24 ` Paul E. McKenney
2007-10-02 18:02 ` Oleg Nesterov
2007-10-01 1:20 ` Paul E. McKenney
2007-09-10 18:35 ` [PATCH RFC 4/9] RCU: synchronize_sched() workaround for CPU hotplug Paul E. McKenney
2007-09-10 18:36 ` [PATCH RFC 5/9] RCU: CPU hotplug support for preemptible RCU Paul E. McKenney
2007-09-30 16:38 ` Oleg Nesterov
2007-10-01 1:41 ` Paul E. McKenney
2007-09-10 18:39 ` [PATCH RFC 6/9] RCU priority boosting " Paul E. McKenney
2007-09-28 22:56 ` Gautham R Shenoy
2007-09-28 23:05 ` Steven Rostedt
2007-09-30 3:11 ` Paul E. McKenney
2007-10-05 11:46 ` Gautham R Shenoy
2007-10-05 12:24 ` Steven Rostedt
2007-10-05 13:21 ` Gautham R Shenoy
2007-10-05 14:07 ` Paul E. McKenney
2007-09-10 18:39 ` [PATCH RFC 7/9] RCU: rcutorture testing for RCU priority boosting Paul E. McKenney
2007-09-10 18:41 ` [PATCH RFC 8/9] RCU: Make RCU priority boosting consume less power Paul E. McKenney
2007-09-10 18:42 ` [PATCH RFC 9/9] RCU: preemptible documentation and comment cleanups Paul E. McKenney
2007-09-10 18:44 ` [PATCH RFC 0/9] RCU: Preemptible RCU Ingo Molnar
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