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Re: [Xen-users] Inconsistent and non-monotonic values from 'date'

To: jim burns <jim_burn@xxxxxxxxxxxxx>
Subject: Re: [Xen-users] Inconsistent and non-monotonic values from 'date'
From: Jason Petersen <jasonmp85@xxxxxxx>
Date: 2007年12月26日 19:53:01 -0600
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I'm not sure what Ubuntu has to do with this (if you like I can probably replicate this problem on any distro, you pick), but two separate monotonic sequences isn't very useful when they're interlaced... Apparently turning on CPU pinning fixed the issue (I currently have independent_wallclock on but I think I'll still be ok with it off). This is an issue with Xen, not any particular distro.
--Jason
On Dec 25, 2007, at 2:34 PM, jim burns wrote:
On Tue December 11 2007 1:21:04 pm Jason Petersen wrote:
jpetersen@devel:~$ date
Tue Dec 11 12:16:46 CST 2007
jpetersen@devel:~$ date
Tue Dec 11 12:17:12 CST 2007
jpetersen@devel:~$ date
Tue Dec 11 12:16:48 CST 2007
jpetersen@devel:~$ date
Tue Dec 11 12:17:15 CST 2007
jpetersen@devel:~$ date
Tue Dec 11 12:16:51 CST 2007
jpetersen@devel:~$ date
Tue Dec 11 12:17:17 CST 2007
It looks like you have two separate monotonic sequences - Do you have a multiple core system? It almost looks like they are keeping different offsets to a base time. Wouldn't know what to do with that, but I'm not surprised
it's happening on Ubuntu.
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