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Re: Mainline merge part 14 - profiler improvements
On Wed, May 08, 2002 at 11:00:17AM +0200, Jan Hubicka wrote:
> This is quite large, but on the other hand, overhead of thread unsafe profiling
> is about 20% for GCC, using the lock prefix on Pentium was about 120 cycles, I
> would expect it to increase on newer CPUs, so it can increase the overhead to
> about 300-400%
It decreases, actually. Pentium had a stupid implementation.
It's quite fast on Athlon, for instance.
r~