From: Ingo Molnar <mingo@elte.hu>
To: Daniel Walker <dwalker@mvista.com>
Cc: linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
david singleton <dsingleton@mvista.com>,
Steven Rostedt <rostedt@goodmis.org>,
Rui Nuno Capela <rncbc@rncbc.org>,
Fernando Lopez-Lezcano <nando@ccrma.Stanford.EDU>,
Mark Knecht <markknecht@gmail.com>
Subject: Re: 2.6.14-rc4-rt7
Date: Tue, 18 Oct 2005 22:26:10 +0200 [thread overview]
Message-ID: <20051018202610.GA12375@elte.hu> (raw)
In-Reply-To: <1129652611.13672.12.camel@c-67-188-6-232.hsd1.ca.comcast.net>
* Daniel Walker <dwalker@mvista.com> wrote:
> > > I found this latency ~5 minutes after boot up, no load . It looks like
> > > vgacon_scroll() has a memset like operation which can grow.
> >
> > do you have PRINTK_IGNORE_LOGLEVEL enabled? If yes then much of the
> > printk code will run with interrupts disabled - hence non-preemptable.
> > PRINTK_IGNORE_LOGLEVEL is a debugging feature for developers. I have
> > added an extra explanation to the Kconfig, see below.
>
> I was just running a "make defconfig" and I enabled latency tracing .
> PRINTK_IGNORE_LOGLEVEL defaults to off (doesn't it?), and I didn't
> make any changes to it . Unless it get switched on by something else
> ..
>
> It looks like the logic might be reversed in release_console_sem() .
yeah, it is reversed. I 'fixed' it a couple of releases ago - but in
fact it was correct previously and i introduced this bug. I have fixed
this in my tree and have released -rt9 with the fix.
Ingo
next prev parent reply other threads:[~2005-10-18 20:25 UTC|newest]
Thread overview: 117+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-17 16:05 2.6.14-rc4-rt7 Ingo Molnar
2005-10-17 17:06 ` 2.6.14-rc4-rt7 Mark Knecht
2005-10-17 19:21 ` 2.6.14-rc4-rt7 Fernando Lopez-Lezcano
2005-10-18 1:30 ` 2.6.14-rc4-rt7 Fernando Lopez-Lezcano
2005-10-18 1:50 ` 2.6.14-rc4-rt7 Mark Knecht
2005-10-18 6:54 ` 2.6.14-rc4-rt7 Ingo Molnar
2005-10-18 7:28 ` 2.6.14-rc4-rt7 Ingo Molnar
2005-10-18 14:11 ` 2.6.14-rc4-rt7 K.R. Foley
2005-10-18 14:49 ` 2.6.14-rc4-rt7 Ingo Molnar
2005-10-18 21:04 ` 2.6.14-rc4-rt7 Fernando Lopez-Lezcano
2005-10-18 21:31 ` 2.6.14-rc4-rt7 William Weston
2005-10-19 6:01 ` 2.6.14-rc4-rt7 Steven Rostedt
2005-10-19 11:19 ` 2.6.14-rc4-rt7 Ingo Molnar
2005-10-20 19:12 ` 2.6.14-rc4-rt7 Fernando Lopez-Lezcano
2005-10-20 19:16 ` 2.6.14-rc4-rt7 Ingo Molnar
2005-10-20 23:55 ` 2.6.14-rc4-rt7 Fernando Lopez-Lezcano
2005-10-21 8:05 ` 2.6.14-rc4-rt7 Ingo Molnar
2005-10-21 23:25 ` 2.6.14-rc4-rt7 Fernando Lopez-Lezcano
2005-10-22 0:20 ` 2.6.14-rc4-rt7 Mark Knecht
2005-10-22 3:41 ` 2.6.14-rc4-rt7 Ingo Molnar
2005-10-22 5:12 ` 2.6.14-rc4-rt7 Lee Revell
2005-10-22 23:25 ` 2.6.14-rc4-rt7 Fernando Lopez-Lezcano
2005-10-22 3:58 ` 2.6.14-rc4-rt7 Ingo Molnar
2005-10-24 19:28 ` 2.6.14-rc4-rt7 Fernando Lopez-Lezcano
2005-10-24 19:38 ` 2.6.14-rc4-rt7 Fernando Lopez-Lezcano
2005-10-24 19:46 ` 2.6.14-rc4-rt7 john stultz
2005-10-25 9:17 ` 2.6.14-rc4-rt7 Antonio
2005-10-25 15:44 ` 2.6.14-rc4-rt7 Ingo Molnar
2005-10-25 15:58 ` 2.6.14-rc4-rt7 linux-os (Dick Johnson)
2005-10-25 17:35 ` 2.6.14-rc4-rt7 Fernando Lopez-Lezcano
2005-10-25 18:16 ` 2.6.14-rc4-rt7 john stultz
2005-10-25 20:12 ` 2.6.14-rc4-rt7 George Anzinger
2005-10-26 8:28 ` 2.6.14-rc4-rt7 Ingo Molnar
2005-10-26 16:03 ` 2.6.14-rc4-rt7 George Anzinger
2005-10-26 17:17 ` 2.6.14-rc4-rt7 George Anzinger
2005-10-26 20:45 ` 2.6.14-rc4-rt7 Rui Nuno Capela
2005-10-26 22:07 ` 2.6.14-rc4-rt7 William Weston
2005-10-26 23:33 ` 2.6.14-rc4-rt7 john stultz
2005-10-26 23:54 ` 2.6.14-rc4-rt7 William Weston
2005-10-26 23:58 ` 2.6.14-rc4-rt7 Steven Rostedt
2005-10-27 0:11 ` 2.6.14-rc4-rt7 john stultz
2005-10-27 0:34 ` 2.6.14-rc4-rt7 William Weston
2005-10-26 23:57 ` 2.6.14-rc4-rt7 Steven Rostedt
2005-10-27 0:02 ` 2.6.14-rc4-rt7 William Weston
2005-10-27 0:45 ` 2.6.14-rc4-rt7 john stultz
2005-10-27 1:07 ` 2.6.14-rc4-rt7 Steven Rostedt
2005-10-27 1:22 ` 2.6.14-rc4-rt7 john stultz
2005-10-27 1:37 ` 2.6.14-rc4-rt7 Steven Rostedt
2005-10-27 1:52 ` 2.6.14-rc4-rt7 john stultz
2005-10-27 2:11 ` 2.6.14-rc4-rt7 Steven Rostedt
2005-10-27 22:01 ` 2.6.14-rc4-rt7 William Weston
2005-10-27 22:32 ` 2.6.14-rc4-rt7 Steven Rostedt
2005-10-27 1:26 ` 2.6.14-rc4-rt7 Steven Rostedt
2005-10-27 8:01 ` 2.6.14-rc4-rt7 Rui Nuno Capela
2005-10-27 17:44 ` 2.6.14-rc4-rt7 Steven Rostedt
2005-10-27 23:18 ` 2.6.14-rc4-rt7 Rui Nuno Capela
2005-10-28 17:13 ` 2.6.14-rc4-rt7 Fernando Lopez-Lezcano
2005-11-03 22:13 ` 2.6.14-rc4-rt7 - [PATCH] improved boot time TSC synchronization Jim Houston
2005-10-24 20:39 ` 2.6.14-rc4-rt7 Steven Rostedt
2005-10-24 21:00 ` 2.6.14-rc4-rt7 Lee Revell
2005-10-17 21:43 ` 2.6.14-rc4-rt7 Daniel Walker
2005-10-17 22:03 ` 2.6.14-rc4-rt7 Thomas Gleixner
2005-10-17 22:05 ` 2.6.14-rc4-rt7 Daniel Walker
2005-10-17 22:15 ` 2.6.14-rc4-rt7 Thomas Gleixner
2005-10-18 6:42 ` 2.6.14-rc4-rt7 Ingo Molnar
2005-10-18 16:23 ` 2.6.14-rc4-rt7 Daniel Walker
2005-10-18 20:26 ` Ingo Molnar [this message]
2005-10-18 0:19 ` 2.6.14-rc4-rt7 Daniel Walker
2005-10-18 6:45 ` 2.6.14-rc4-rt7 Ingo Molnar
2005-10-20 19:54 ` 2.6.14-rc5-rt1 Ingo Molnar
2005-10-20 23:33 ` 2.6.14-rc5-rt1 Felix Oxley
2005-10-21 0:39 ` 2.6.14-rc5-rt1 Mark Knecht
2005-10-21 13:47 ` 2.6.14-rc5-rt1 Mark Knecht
2005-10-21 10:01 ` 2.6.14-rc5-rt1 Felix Oxley
2005-10-21 10:16 ` 2.6.14-rc5-rt1 Ingo Molnar
2005-10-21 10:18 ` 2.6.14-rc5-rt1 Felix Oxley
2005-10-21 10:26 ` 2.6.14-rc5-rt1 Felix Oxley
2005-10-22 23:23 ` 2.6.14-rc5-rt1 Felix Oxley
2005-10-24 22:28 ` [ANNOUNCE] 2.6.14-rc5-rt5 kgdb update George Anzinger
2005-11-12 15:32 ` Ingo Molnar
2005-11-12 15:33 ` Ingo Molnar
2005-11-12 16:10 ` George Anzinger
2005-10-30 13:33 ` 2.6.14-rt1 Ingo Molnar
2005-10-30 14:58 ` 2.6.14-rt1 K.R. Foley
2005-10-30 15:41 ` 2.6.14-rt1 Steven Rostedt
2005-10-30 17:17 ` 2.6.14-rt1 Ingo Molnar
2005-10-30 17:19 ` 2.6.14-rt1 Ingo Molnar
2005-10-30 16:30 ` 2.6.14-rt1 Mark Knecht
2005-10-31 18:13 ` 2.6.14-rt1 Fernando Lopez-Lezcano
2005-11-01 20:18 ` 2.6.14-rt1 Fernando Lopez-Lezcano
2005-11-02 2:47 ` 2.6.14-rt1 Fernando Lopez-Lezcano
2005-11-02 2:55 ` 2.6.14-rt1 Carlos Antunes
2005-11-02 3:05 ` 2.6.14-rt1 Steven Rostedt
2005-11-02 3:26 ` 2.6.14-rt1 Carlos Antunes
2005-11-02 3:32 ` 2.6.14-rt1 Steven Rostedt
2005-11-02 3:36 ` 2.6.14-rt1 Carlos Antunes
2005-11-02 4:05 ` 2.6.14-rt1 Carlos Antunes
2005-11-02 9:21 ` 2.6.14-rt1 Florian Schmidt
2005-11-02 14:35 ` 2.6.14-rt1 Carlos Antunes
2005-11-02 14:40 ` 2.6.14-rt1 Ingo Molnar
2005-11-02 14:45 ` 2.6.14-rt1 Carlos Antunes
2005-11-02 15:37 ` 2.6.14-rt1 Steven Rostedt
2005-11-02 16:07 ` 2.6.14-rt1 Carlos Antunes
2005-11-02 16:24 ` 2.6.14-rt1 Steven Rostedt
2005-11-02 16:53 ` 2.6.14-rt1 Carlos Antunes
2005-11-02 16:37 ` 2.6.14-rt1 Steven Rostedt
2005-11-02 18:13 ` 2.6.14-rt1 Fernando Lopez-Lezcano
2005-11-02 7:02 ` 2.6.14-rt1 Ingo Molnar
2005-11-02 18:13 ` 2.6.14-rt1 Fernando Lopez-Lezcano
2005-11-04 7:04 ` 2.6.14-rt1 Fernando Lopez-Lezcano
2005-11-02 21:41 ` 2.6.14-rt4: __get_nsec_offset() false positives john stultz
2005-11-03 6:53 ` Ingo Molnar
2005-11-05 2:35 ` 2.6.14-rt1 (now rt6) Fernando Lopez-Lezcano
2005-11-05 3:46 ` Mark Knecht
2005-11-09 11:22 ` Ingo Molnar
2005-11-10 12:15 ` Ingo Molnar
2005-11-10 22:10 ` Fernando Lopez-Lezcano
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