Re: [Xen-devel] Timer ISR/0: Time went backwards

[David F Barrera <dfbp@xxxxxxxxxx>]

This is a know issue:

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=195

Ted Kaczmarek wrote:

> On Fri, 2005-10-07 at 10:03 -0400, Ted Kaczmarek wrote:
>  
>
> > ###############################################
> > changeset:   7234:bd37123974b2
> > Centos 4.1 dom0, Tyan 2462 SMP, 8k kernel stack
> > ###############################################
> >
> > 7 UP guests, have 1 very fat guest(1200 megs, running tomcat4,
> > postgresql, and opennms unstable) domain1, issuing 
> > xm save domain1;xm restore domain1
> > saw these log messages.
> >
> > XEN) (file=grant_table.c, line=940) Grant unref rd(13) ld(0) frm(1a8cd)
> > flgs(1).
> > (XEN) (file=grant_table.c, line=940) Grant unref rd(13) ld(0) frm(1a614)
> > flgs(1).
> >
> >
> > DomU's exceeding 24 hours of uptime, other than issues related to load
> > on dom0 things are behaving rather well.
> >
> > Where can a user obtain docs on the grant tables by the way?
> > Is the source the only present place?
> >
> >
> > Regards
> > Ted
> >
> >
> > _______________________________________________
> >    
> Within seconds of setting this a total melt down :-(
>
> A couple hundred or so of these on the console.
>
> Timer ISR/0: Time went backwards: delta=-9101039 cpu_delta=10898961
> shadow=89150287265250 off=9333682407 processed8 0: 89159610048608
> 1: 89159630000000
> Timer ISR/0: Time went backwards: delta=-9144937 cpu_delta=10855063
> shadow=89150287265250 off=9343638515 processed8 0: 89159620048608
> 1: 89159640000000
> Timer ISR/0: Time went backwards: delta=-8707693 cpu_delta=11292307
> shadow=89150287265250 off=9354075736 processed8 0: 89159630048608
> 1: 89159650000000
>
>
> You guys putting any gremlins in this code :-)
>
> Regards,
> Ted
>
>
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>
>  

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