From: "Paul Rolland" <rol@witbe.net>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Cc: rol@witbe.net
Subject: constant_tsc and TSC unstable
Date: Thu, 29 Nov 2007 17:11:42 +0100 [thread overview]
Message-ID: <20071129171142.56c7890a@tux.DEF.witbe.net> (raw)
Hello,
I've a machine with a Core2Duo CPU. /proc/cpuinfo reports the flag
constant_tsc, but at boot time, I have the log :
...
Total of 2 processors activated (6919.15 BogoMIPS).
ENABLING IO-APIC IRQs
..TIMER: vector=0x31 apic1=0 pin1=2 apic2=-1 pin2=-1
checking TSC synchronization [CPU#0 -> CPU#1]:
Measured 3978592228 cycles TSC warp between CPUs, turning off TSC clock.
Marking TSC unstable due to: check_tsc_sync_source failed.
Brought up 2 CPUs
...
This machine is running 2.6.23.1-21.fc7. I know I should report to Fedora,
but I was wondering if this is a bug or a feature ;)
Regards,
Paul
next reply other threads:[~2007-11-29 16:20 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-29 16:11 Paul Rolland [this message]
2007-11-29 19:04 ` H. Peter Anvin
2007-11-29 21:26 ` Michael Tokarev
2007-11-30 6:59 ` Paul Rolland
2007-11-30 7:04 ` H. Peter Anvin
2007-11-29 21:36 ` Patrick McHardy
2007-11-29 23:29 ` Pallipadi, Venkatesh
2007-11-30 6:52 ` Paul Rolland (ポール・ロラン)
2007-12-06 0:35 ` Pallipadi, Venkatesh
2007-11-30 0:30 ` Frans Pop
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