Re: test time-warps [was: Re: 2.6.14-rt13]

From: Christopher Friesen
Date: Tue Nov 22 2005 - 13:01:55 EST

Fernando Lopez-Lezcano wrote:

Basically if there is an observable and provable warp in the TSC output then it must not be used for any purpose that is not strictly per-CPU-ified (such as userspace threads bound to a single CPU, and the TSC never used between threads).

Apparently that's the case.

What about periodically re-syncing the TSCs on the cpus? Are they writeable?


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