linux-kernel - Re: [PATCH] x86: Export tsc related information in sysfs

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Date:	Wed, 26 May 2010 14:06:26 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	john stultz <johnstul@...ibm.com>
CC:	Brian Bloniarz <bmb@...enacr.com>,
	Dan Magenheimer <dan.magenheimer@...cle.com>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Andi Kleen <andi@...stfloor.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Venkatesh Pallipadi <venki@...gle.com>, chris.mason@...cle.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: Export tsc related information in sysfs

On 05/26/2010 01:19 PM, john stultz wrote:
>>
>> Yes, Prof. Mills in particular (for those who don't know, he's "Mr.
>> NTP") really gets upset about the way Linux does timekeeping.
>> Unfortunately it's not clear to me that he's willing to work with us as
>> opposed to wanting things to work exactly like BSD, and swive the
>> non-NTP users.
> 
> Although I suspect his dislike for Linux is historical, as Roman
> reworked the ntp code to follow the NTPv4 reference implementation back
> in the 2.6.19 timeframe.
> 
> However I'd be more then happy to try to address any specific
> deficiencies with Linux's NTP implementation if someone can better
> express Prof Mills' critiques are.
> 

That's the $10M question... I think it starts with asking the NTP
community for advice.

	-hpa
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