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From: Rob Landley <rob@landley.net>
To: dwalker@mvista.com
Cc: Thomas Gleixner <tglx@linutronix.de>,
	Andrew Morton <akpm@osdl.org>,
	linux-kernel@vger.kernel.org, mingo@elte.hu
Subject: Re: 2.6.20-rc6-mm3
Date: Tue, 6 Feb 2007 18:15:40 -0500	[thread overview]
Message-ID: <200702061815.41078.rob@landley.net> (raw)
In-Reply-To: <1170794437.3455.20.camel@dwalker1>

On Tuesday 06 February 2007 3:40 pm, Daniel Walker wrote:
> In this case "different" goes into userspace .. So different could mean
> userspace regression, which is something that we don't want. I have no
> idea if any apps use /proc/interrupts , but it's possible since it's
> been around for a long time.
> 
> The reason that I'm bringing it up at all is because people have ask me
> "Why isn't my timer ticking??"

Because there are two clock sources in the machine and it's using the other 
one, so the interrupt isn't firing?

Are you saying that the /proc statistics aren't accurate, or that you 
previously misunderstood what it was actually measuring and you'd now like it 
to lie?

> > Uurg. /proc/interrupts has nothing to do with timers. It's interrupts
> > statistics. See LOC entry for the lapic ones.
> 
> Your saying we can't remove it tho, if /proc/interrupts is not related
> to timers why does the entry exist at all ?

I didn't think Thomas even touched the /proc/interrupts reporting code.  It's 
still accurate.  The patch changed the usage of timers, /proc/interrupts is 
accurately showing the change, and you're surprised that what it was 
measuring wasn't what you thought it was measuring all along.

This ain't jiffies.  This is how often the PIT fired.  They are not the same 
thing.

Rob
-- 
"Perfection is reached, not when there is no longer anything to add, but
when there is no longer anything to take away." - Antoine de Saint-Exupery

  parent reply	other threads:[~2007-02-06 23:15 UTC|newest]

Thread overview: 124+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-30  4:45 2.6.20-rc6-mm3 Andrew Morton
2007-01-30  4:50 ` 2.6.20-rc6-mm3 Jeff Garzik
2007-01-30  5:11   ` 2.6.20-rc6-mm3 Andrew Morton
2007-01-30  9:56     ` 2.6.20-rc6-mm3 Evgeniy Polyakov
2007-01-30  8:16 ` 2.6.20-rc6-mm3 Sunil Naidu
2007-01-30  8:32   ` 2.6.20-rc6-mm3 Andrew Morton
2007-01-30  9:06 ` 2.6.20-rc6-mm3 Olivier Galibert
2007-01-30  9:26   ` 2.6.20-rc6-mm3 Andrew Morton
2007-01-30 18:47     ` 2.6.20-rc6-mm3 Olivier Galibert
2007-01-31  7:57     ` 2.6.20-rc6-mm3 Len Brown
2007-02-01  4:25     ` 2.6.20-rc6-mm3 Len Brown
2007-01-30 22:18 ` 2.6.20-rc6-mm3 Maciej Rutecki
2007-01-30 22:27   ` 2.6.20-rc6-mm3 Andrew Morton
2007-01-31  0:55     ` 2.6.20-rc6-mm3 Karsten Wiese
2007-01-31 13:22       ` 2.6.20-rc6-mm3 Ingo Molnar
2007-01-31 14:25         ` 2.6.20-rc6-mm3 Karsten Wiese
2007-02-01  8:01           ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-01 10:44             ` 2.6.20-rc6-mm3 Karsten Wiese
2007-03-01 11:11               ` 2.6.20-rc6-mm3 Karsten Wiese
2007-02-03  0:37             ` 2.6.20-rc6-mm3 Pavel Machek
2007-02-01 13:03       ` [PATCH -mm] gtod persistent clock resume fix Thomas Gleixner
2007-01-31 11:54     ` 2.6.20-rc6-mm3 Maciej Rutecki
2007-02-01  4:10       ` 2.6.20-rc6-mm3 Len Brown
2007-02-01  4:17         ` 2.6.20-rc6-mm3 Andrew Morton
2007-01-31  1:16   ` 2.6.20-rc6-mm3 Tilman Schmidt
2007-01-31  1:25     ` 2.6.20-rc6-mm3 Andrew Morton
2007-01-31 11:38       ` 2.6.20-rc6-mm3 Tilman Schmidt
2007-01-31 12:29         ` 2.6.20-rc6-mm3 Alexey Starikovskiy
2007-01-31 16:02           ` 2.6.20-rc6-mm3 Maciej Rutecki
2007-01-31 18:28           ` 2.6.20-rc6-mm3 Tilman Schmidt
2007-01-31 21:52 ` 2.6.20-rc6-mm3 Mattia Dongili
2007-01-31 23:21   ` 2.6.20-rc6-mm3 Mattia Dongili
2007-02-01 19:04     ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-01 19:36     ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-01 20:01       ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-01 21:11         ` 2.6.20-rc6-mm3 Mattia Dongili
2007-02-01 22:33           ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-02 19:18             ` dynticks + iptables almost stops the boot process [was: Re: 2.6.20-rc6-mm3] Mattia Dongili
2007-02-02 20:27               ` Thomas Gleixner
2007-02-02 20:43                 ` Mattia Dongili
2007-02-06 16:48                   ` Ingo Molnar
2007-02-06 19:28                     ` Mattia Dongili
2007-02-06 23:12                       ` Tilman Schmidt
2007-02-06 23:17                         ` Thomas Gleixner
2007-02-07  1:01                           ` Andrew Morton
2007-02-07 19:33                             ` Ingo Molnar
2007-02-01 21:37         ` 2.6.20-rc6-mm3 Mattia Dongili
2007-02-01 20:24       ` 2.6.20-rc6-mm3 Mattia Dongili
2007-02-01  0:14 ` 2.6.20-rc6-mm3 Christoph Lameter
2007-02-01  0:24   ` 2.6.20-rc6-mm3 Andrew Morton
2007-02-01  0:27     ` 2.6.20-rc6-mm3 Christoph Lameter
2007-02-01  0:36       ` 2.6.20-rc6-mm3 Andrew Morton
2007-02-01  0:38         ` 2.6.20-rc6-mm3 Christoph Lameter
2007-02-01  6:20         ` 2.6.20-rc6-mm3 David Chinner
2007-02-01  7:12           ` 2.6.20-rc6-mm3 Andrew Morton
2007-02-01 19:01             ` 2.6.20-rc6-mm3 Christoph Lameter
2007-02-01 19:18               ` 2.6.20-rc6-mm3 Jens Axboe
2007-02-01 20:18                 ` 2.6.20-rc6-mm3 Christoph Lameter
2007-02-01 20:26                   ` 2.6.20-rc6-mm3 Jens Axboe
2007-02-01 23:02                     ` 2.6.20-rc6-mm3 Christoph Lameter
2007-02-05 12:02                       ` 2.6.20-rc6-mm3 Jens Axboe
2007-02-05 12:17                         ` 2.6.20-rc6-mm3 Jens Axboe
2007-02-05 12:56                           ` 2.6.20-rc6-mm3 Jens Axboe
2007-02-05 18:20                             ` 2.6.20-rc6-mm3 Christoph Lameter
2007-02-05 18:34                               ` 2.6.20-rc6-mm3 Jens Axboe
2007-02-02  4:08                 ` 2.6.20-rc6-mm3 David Chinner
2007-02-02  7:31                   ` 2.6.20-rc6-mm3 Jens Axboe
2007-02-01 18:24 ` 2.6.20-rc6-mm3 Cedric Le Goater
2007-02-01 19:37   ` 2.6.20-rc6-mm3 Starikovskiy, Alexey Y
2007-02-01 20:29     ` 2.6.20-rc6-mm3 Cedric Le Goater
2007-02-01 20:38       ` 2.6.20-rc6-mm3 Cedric Le Goater
2007-02-02 14:22         ` 2.6.20-rc6-mm3 Starikovskiy, Alexey Y
2007-02-02 14:47           ` 2.6.20-rc6-mm3 Cedric Le Goater
2007-02-02 14:50             ` 2.6.20-rc6-mm3 Starikovskiy, Alexey Y
2007-02-02 16:04               ` 2.6.20-rc6-mm3 Cedric Le Goater
2007-02-03  7:30                 ` 2.6.20-rc6-mm3 Cedric Le Goater
2007-02-03  7:57                   ` 2.6.20-rc6-mm3 Starikovskiy, Alexey Y
2007-02-02 17:39 ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 16:03 ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 18:36   ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 18:45     ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 19:07       ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 19:55         ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 20:20           ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 20:40             ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 20:52               ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 20:56                 ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 21:09                   ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 21:20                     ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 21:23                     ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 21:41                       ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 21:54                         ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 22:08                           ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 22:42                             ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 22:56                               ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 23:04                                 ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 23:14                                   ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 23:22                                     ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 23:28                                       ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 23:35                                         ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 23:44                                           ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 23:51                                           ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-07  2:46                                             ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 23:36                                       ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-07  1:12                                         ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-07 14:53                                           ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 23:37                                       ` 2.6.20-rc6-mm3 Ingo Molnar
2007-02-06 22:13                           ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 21:43                       ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 21:59                         ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 21:17               ` 2.6.20-rc6-mm3 Thomas Gleixner
2007-02-06 21:25                 ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 23:15               ` Rob Landley [this message]
2007-02-06 23:28                 ` 2.6.20-rc6-mm3 Daniel Walker
2007-02-06 23:55                   ` 2.6.20-rc6-mm3 Rob Landley
2007-02-06 22:11 ` [-mm patch] #ifdef ACPI_FUTURE_USAGE acpi_os_readable() Adrian Bunk
2007-02-06 22:12 ` [RFC: -mm patch] drivers/net/atl1/: possible cleanups Adrian Bunk
2007-02-07  0:19   ` Jay Cliburn
2007-02-07  0:22     ` Jeff Garzik
2007-02-07  0:24       ` J. K. Cliburn
2007-02-07  0:24     ` Adrian Bunk
2007-02-06 22:12 ` [-mm patch] drivers/scsi/aacraid/: cleanups Adrian Bunk
2007-02-06 22:12 ` [-mm patch] make gfs2_writepages() static Adrian Bunk
2007-02-07 10:50   ` Steven Whitehouse

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