Date: Mon, 28 Nov 2005 15:21:01 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Jonas Oreland <jonas@mysql.com>, LKML <linux-kernel@vger.kernel.org>,
       john stultz <johnstul@us.ibm.com>
Subject: Re: [RT] read_tsc: ACK! TSC went backward! Unsynced TSCs?
Message-ID: <20051128142101.GA27172@elte.hu>
References: <1133179554.11491.3.camel@localhost.localdomain> <438AF860.7050905@mysql.com> <1133182780.5625.4.camel@localhost.localdomain>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1133182780.5625.4.camel@localhost.localdomain>
User-Agent: Mutt/1.4.2.1i
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1183
Lines: 29


* Steven Rostedt <rostedt@goodmis.org> wrote:

> > Booting with idle=poll, fixes that.
> > 
> > Hope it help
> 
> I forgot to mention that I tried that too.  But thank you for sending 
> this, because, just to make sure, I tried it again, and now it booted. 
> I think I might have had a typo when adding idle=poll the first time.  
> I think of this as a temporary solution, and I won't be adding that to 
> grub anytime soon.  Manually typing it in at boot time will keep me 
> remembering that it is there.  As long as I make sure that I type it 
> right ;-)
> 
> OK, this means that I don't want to stay in the -RT kernel too long 
> (electric prices are up you know).

you'll get problems on stock SMP kernels too, unless you use idle=poll.  
(or notsc) You can get rid of those warnings in the -rt kernel by 
disabling the PARANOID_GENERIC_TIME .config option. In any case, i think 
that warning should be a once-per-bootup.

	Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/