Re: program runs almost twice as slow on 2 CPU machine when 1 CPU
- From: "Pavel A." <pavel_a@xxxxxxxxxxxxxxx>
- Date: Wed, 6 Dec 2006 06:49:57 +0200
"anton bassov" <soviet_bloke@xxxxxxxxxxx> wrote in message news:1165360492.928427.276470@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Once interrupt can get raised at any time, regardless of the
thread that currently runs on the target CPU, they cannot affect CPU
load, as far as system management tools are concerned.
Extremely apologise for jumping into this discussion, but
how then the Process Explorer displays time percentage
for interrupts and dpc ?
In fact, there are not that many drivers that actually deal with
interrupts - only port and miniport drivers do it. All other drivers
just submit their requests, and pass them down the stack. They run at
IRQL < DPC level most of the time,
This also looks as overstatement. Even if a driver does not
handle interrupts, it nevertheless can do a lot of work at dispatch,
just because this is simple (WDM, USB and so on)
Regards,
--PA
.
- Follow-Ups:
- Re: program runs almost twice as slow on 2 CPU machine when 1 CPU
- From: anton bassov
- Re: program runs almost twice as slow on 2 CPU machine when 1 CPU
- From: Arnaud Debaene
- Re: program runs almost twice as slow on 2 CPU machine when 1 CPU
- References:
- Re: program runs almost twice as slow on 2 CPU machine when 1 CPU is u
- From: Michael K. O'Neill
- Re: program runs almost twice as slow on 2 CPU machine when 1 CPU
- From: Arnaud Debaene
- Re: program runs almost twice as slow on 2 CPU machine when 1 CPU
- From: anton bassov
- Re: program runs almost twice as slow on 2 CPU machine when 1 CPU
- From: Arnaud Debaene
- Re: program runs almost twice as slow on 2 CPU machine when 1 CPU
- From: anton bassov
- Re: program runs almost twice as slow on 2 CPU machine when 1 CPU is u
- Prev by Date: Re: computer-based training (CBT) window?
- Next by Date: Re: How do I restrict access from starting/stopping services?
- Previous by thread: Re: program runs almost twice as slow on 2 CPU machine when 1 CPU
- Next by thread: Re: program runs almost twice as slow on 2 CPU machine when 1 CPU
- Index(es):
Relevant Pages
|
