Peter Harris <[email protected]> writes: > Data point: > > I've got a Dell box (also Ivy Bridge) where calling GetTimeInMillis() > after each request dings noop performance by like 30% because the TSC is > unstable.
That's terrible. > That said, this box is an outlier. Every other recent box I can put my > hands on has a fast GetTimeInMillis(). The patch in question doesn't call GTIM after each request unless you use -dumbSched; and that is really just to make using gdb easier, not something I'd expect people to use in production. I wonder if having a separate thread updating the time would end up being a net win? -- -keith
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