From: Frans Pop <elendil@planet.nl>
To: linux-kernel@vger.kernel.org
Cc: Steven Rostedt <rostedt@goodmis.org>,
len.brown@intel.com, mingo@elte.hu, tglx@linutronix.de,
johnstul@us.ibm.com
Subject: Re: Regression in TSC unstable -- confirmed
Date: Mon, 11 May 2009 02:26:48 +0200 [thread overview]
Message-ID: <200905110226.50115.elendil@planet.nl> (raw)
In-Reply-To: <alpine.DEB.2.00.0905072359530.28378@gandalf.stny.rr.com>
I'm seeing the same issue with 2.6.30-rc5 (not tested previous RCs on that
box) on a system for which TSC has always been usable.
$ dmesg | grep TSC
Fast TSC calibration using PIT
checking TSC synchronization [CPU#0 -> CPU#1]: passed.
Marking TSC unstable due to TSC halts in idle
The last line is new with 2.6.30. After reverting a71e4917dc0 the TSC
works fine again.
The system has a Intel D945GCZ mainboard with dual core Pentium D
(3.20GHz) processor running x86_64 and Debian Lenny.
Cheers,
FJP
(Thanks to Steven for doing the bisection.)
next prev parent reply other threads:[~2009-05-11 0:27 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-08 4:14 regression in TSC unstable? Steven Rostedt
2009-05-08 5:21 ` Len Brown
2009-05-08 12:07 ` Ingo Molnar
2009-05-11 0:26 ` Frans Pop [this message]
2009-05-11 14:22 ` [PATCH] ACPI: do not mark TSC unstable for invalid C-states Thomas Gleixner
2009-05-11 15:00 ` Steven Rostedt
2009-05-11 15:03 ` Frans Pop
2009-05-11 16:43 ` Janne Kulmala
2009-05-14 19:46 ` Len Brown
2009-05-14 20:09 ` Len Brown
2009-05-14 20:19 ` Thomas Gleixner
2009-05-14 21:55 ` [PATCH] ACPI: idle: fix init-time TSC check regression Len Brown
2009-05-14 22:27 ` Thomas Gleixner
2009-05-15 3:36 ` Len Brown
2009-05-14 22:31 ` Frans Pop
2009-05-15 5:40 ` [PATCH] ACPI: Idle C-states disabled by max_cstate should not disable the TSC Len Brown
2009-05-15 6:18 ` [PATCH] ACPI: idle: rename lapic timer workaround routines Len Brown
2009-05-15 8:28 ` Thomas Gleixner
2009-05-15 8:27 ` [PATCH] ACPI: Idle C-states disabled by max_cstate should not disable the TSC Thomas Gleixner
2009-05-15 10:57 ` [PATCH] ACPI: idle: fix init-time TSC check regression Frans Pop
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