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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] System time monotonicity
On 26/3/07 19:50, "Ian Pratt" <Ian.Pratt@xxxxxxxxxxxx> wrote: > On your system it appears to be a couple of microseconds out, which is > on the high side of what we've observed. Normally you only see that kind > of mismatch on systems with TSCs running off different crystals. More likely a jittery chipset timer -- we've observed less-than-ideal stability from some chipset timers, which can throw us off a bit when independently sync'ing the TSCs (which each CPU does for its TSC independently every couple of seconds). -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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