From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir.fraser@eu.citrix.com>
Subject: Re: recurring boot time scalability issues  affecting
	time management
Date: Tue, 11 May 2010 11:22:22 +0100
Message-ID: <C80EEE6E.13E9B%keir.fraser@eu.citrix.com>
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To: Jan Beulich <JBeulich@novell.com>, "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
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On 11/05/2010 09:51, "Jan Beulich" <JBeulich@novell.com> wrote:

>>>> Keir Fraser <keir.fraser@eu.citrix.com> 11.05.10 09:57 >>>
>> On 11/05/2010 07:59, "Jan Beulich" <JBeulich@novell.com> wrote:
>> 
>>> I wonder whether the time handling code in Xen itself shouldn't/can't
>>> therefore be made more robust, or at least reliably detect this sort of
>>> issue (from past analysis of similar problems, the platform timer is
>>> rolling over due to there not being frequent enough invocations of
>>> plt_overflow()) to make analysis of the problem easier.
>> 
>> Something like the attached?
> 
> Yes, except that you probably mean __builtin_llabs() rather than
> __builtin_abs().

xen-unstable:21346

 -- Keir