Re: [boost] Re: Re: Re: Re: Profiling Library suggestion

From: Michael Walter (michael.walter_at_[hidden])
Date: 2005-02-11 22:15:16

On Fri, 11 Feb 2005 19:57:56 -0500, Preston A. Elder
<prez_at_[hidden]> wrote:
> On Fri, 11 Feb 2005 19:30:36 -0500, christopher diggins wrote:
> [...]
> std::clock() and I assume QueryPerformanceCounter() give you an amount of
> clock ticks.  This number is only incremented when the CPU works on your
> task.
AFAIK your assumption is wrong.

The only problem with QueryPerformanceCounter() is that it can "jump"
on some chipsets. A good idea is to use a "control timer" with lower
frequency (or just timeBeginPeriod() + timeGetTime(), if its precision
is good enough for the task).

Michael