RE: [Xen-devel] [PATCH] TSC scaling for live migration between platforms with different TSC frequecies

["Dong, Eddie" <eddie.dong@xxxxxxxxx>]

>> question is:  If it is important to ALWAYS emulate RDTSC,
>> can the Xen code be written to handle RDTSC emulation
>> much faster?  If it could be made fast enough, the

This is in our plan. The perf overhead of sysbench.oltp could be ~10% due to 
rdtsc exiting. But even with optimization, we still need this software scaling 
as a fall back.

>I'd be amazed if this were possible.

We posted the idea several weeks ago. See 
http://lists.xensource.com/archives/html/xen-devel/2009-04/msg00890.html.
Will that impact Solaris?


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