thanks a lot for the pointer to CPUID
luigi
On Mon, Nov 25, 2002 at 05:15:06PM -0800, Nate Lawson wrote:
...
> The Intel processor manual has an explicit example for this and recommends
> you use cpuid as a serializing instruction before the call to rdtsc.
To Unsubscribe: send mail to
On Mon, 25 Nov 2002, Luigi Rizzo wrote:
> I just got hit by a peculiar problem related to out-of-order
> execution of instructions.
> I was doing some low-level timing measurements using the rdtsc()
> around selected pieces of code (the rdtsc() is included in
> the TSTMP() functions that are in REL
Hi,
I just got hit by a peculiar problem related to out-of-order
execution of instructions.
I was doing some low-level timing measurements using the rdtsc()
around selected pieces of code (the rdtsc() is included in
the TSTMP() functions that are in RELENG_4, source is in
sys/i386/isa/clock.c), as
3 matches
Mail list logo
