Hi Gunther,

Some results.

`++ P-III, Windows 2000 ++`

Flag Values

===========

SSE2 = 0

RDTSCP = 0

RDTSC = 3

Counting cycles with the classic technique:

-------------------------------------------

That is the state before 2010.

Cycles used for 100 times FSAVE: 12497

Please, press any key to end the application...

++ P-III OS/2 VDM ++

Flag Values

===========

SSE2 = 0

RDTSCP = 0

RDTSC = 3

Counting cycles with the classic technique:

-------------------------------------------

That is the state before 2010.

Cycles used for 100 times FSAVE: 12926

Please, press any key to end the application...

++ i3-4005U, Oracle VirtualBox, OS/2 Command Prompt, two runs

as seemed inconsistant results. ++

Flag Values

===========

SSE2 = 7

RDTSCP = 5

RDTSC = 3

Counting cycles with modern SSE2 technique:

-------------------------------------------

That's recommended by Intel since 2020 and probably the most reliable method.

Cycles used for 100 times FSAVE: 55433

Please, press any key to end the application...

++ i3-4005U. Oracle VirtualBox, OS/2 VDM three runs, but seems more consistant. ++

Flag Values

===========

SSE2 = 7

RDTSCP = 5

RDTSC = 3

Counting cycles with modern SSE2 technique:

-------------------------------------------

That's recommended by Intel since 2020 and probably the most reliable method.

Cycles used for 100 times FSAVE: 20590

Please, press any key to end the application...

Flag Values

===========

SSE2 = 7

RDTSCP = 5

RDTSC = 3

Counting cycles with modern SSE2 technique:

-------------------------------------------

That's recommended by Intel since 2020 and probably the most reliable method.

Cycles used for 100 times FSAVE: 19664

Please, press any key to end the application...

Flag Values

===========

SSE2 = 7

RDTSCP = 5

RDTSC = 3

Counting cycles with modern SSE2 technique:

-------------------------------------------

That's recommended by Intel since 2020 and probably the most reliable method.

Cycles used for 100 times FSAVE: 17796

Please, press any key to end the application...

++ Pentium M, Windows XP ++

Flag Values

===========

SSE2 = 7

RDTSCP = 0

RDTSC = 3

Counting cycles with modern SSE2 technique:

-------------------------------------------

That's recommended by Intel since 2020 and probably the most reliable method.

Cycles used for 100 times FSAVE: 13375

Please, press any key to end the application...

++

Regards,

Steve N.