Re: program runs almost twice as slow on 2 CPU machine when 1 CPU

Use Process Explorer (www.sysinternals.com) to see who is taking processor
time. I would suspect interrupts...

Actually, it would be a good idea for you to learn what interrupts are
all about, what are their sources, how often they occur, at which speed
they are processed, and whether they can affect CPU load as it is
displayed by system-management tools, let alone have any impact
on user-mode applications, particularly the ones that run in terms of
*MINUTES*.............

Just to give you a starting point, do you really think that CPU is
stopped dead in its tracks when CPU load, displayed by the Process
Manager, is zero???

Anton Bassov



Arnaud Debaene wrote:
"JC" <JC@xxxxxxxxxxxxxxxxxxxxxxxxx> a écrit dans le message de news:
1E2E03B0-929A-467B-BC32-CE6D7E457793@xxxxxxxxxxxxxxxx
The program mentioned are all single thread app.

case 1, run two app concurenlly, both app takes 12 minutes
case 2, run one app only, the app takes 10 mintes
That's the general case I see.


Use Process Explorer (www.sysinternals.com) to see who is taking processor
time. I would suspect interrupts...

Arnaud
MVP - VC

.

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