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From: Thomas Gleixner <tglx@linutronix.de>
To: Martin Knoblauch <spamtrap@knobisoft.de>
Cc: Gabriel C <nix.or.die@googlemail.com>,
	Bart Van Assche <bart.vanassche@gmail.com>,
	linux-kernel@vger.kernel.org, hmh@hmh.eng.br
Subject: Re: 2.6.25.2 - Jiffies/Time jumping back and forth (Regereesion from 2.6.24)
Date: Thu, 8 May 2008 16:13:55 +0200 (CEST)	[thread overview]
Message-ID: <alpine.LFD.1.10.0805081609080.3318@apollo.tec.linutronix.de> (raw)
In-Reply-To: <295530.5900.qm@web32602.mail.mud.yahoo.com>

On Thu, 8 May 2008, Martin Knoblauch wrote:
> on two different systems running 2.6.25.2:
> 
> ibm x3650(2xDualCore)
> -------------------------------------
> [root@lpsdm60 ~]# cat /sys/devices/system/clocksource/clocksource0/available_clocksource
> tsc hpet acpi_pm jiffies
> [root@lpsdm60 ~]# cat /sys/devices/system/clocksource/clocksource0/current_clocksource
> tsc
> 
> HP Proliant DL-380G4 (2xSingleCore)
> ------------------------------------------------------------
> [root@lpsdm52 ~]# cat /sys/devices/system/clocksource/clocksource0/available_clocksource
> tsc hpet acpi_pm jiffies
> [root@lpsdm52 ~]# cat /sys/devices/system/clocksource/clocksource0/current_clocksource
> tsc
> 
> and on the DL380G4 running 2.6.24:
> ---------------------------------------------------------
> [root@lpsdm52 ~]# cat /sys/devices/system/clocksource/clocksource0/available_clocksource
> hpet acpi_pm jiffies tsc
> [root@lpsdm52 ~]# cat /sys/devices/system/clocksource/clocksource0/current_clocksource
> hpet

So on 2.6.24 the TSC is declared unstable at some point and 2.6.25
thinks it works fine. Is this the same kernel config (aside of the 24/25 fuzz) ?

Thanks,
	tglx

  reply	other threads:[~2008-05-08 14:14 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-05-08 14:05 Martin Knoblauch
2008-05-08 14:13 ` Thomas Gleixner [this message]
2008-05-08 17:31   ` Mike Galbraith
  -- strict thread matches above, loose matches on Subject: below --
2008-05-09 15:18 Martin Knoblauch
2008-05-09 13:01 Martin Knoblauch
2008-05-09 11:32 Martin Knoblauch
2008-05-09 11:06 Martin Knoblauch
2008-05-08 16:41 Martin Knoblauch
2008-05-07 18:14 Martin Knoblauch
2008-05-07 18:59 ` John Stultz
2008-05-07 15:50 Martin Knoblauch
2008-05-08 10:29 ` Thomas Gleixner
2008-05-08 12:21   ` Gabriel C
2008-05-07 15:02 Martin Knoblauch
2008-05-07 12:42 Martin Knoblauch
2008-05-07 12:56 ` Henrique de Moraes Holschuh
2008-05-07 13:06 ` Bart Van Assche
2008-05-07 17:07 ` john stultz

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