[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] [RFC] Physical hot-add cpus and TSC
> b) With the patch: > After add: > (XEN) TSC marked as reliable, warp = 407 (count=12) > (XEN) TSC marked as reliable, warp = 444 (count=17) > (XEN) TSC marked as reliable, warp = 525 (count=19) Hi Yunhong -- Does this continue to grow? I'm concerned that the hot-added CPU might be skewing as well? I didn't think this was possible with an Invariant TSC machine but maybe something in the hot-add isolation electronics changes the characteristics of the clock signal? Please try: for i in {0..1000}; do xm debug-key t; sleep 3; done; \ xm dmesg | tail then wait an hour, and see how large the warp is. Hopefully the trend (407,444,525) is a coincidence. Thanks, Dan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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