RE: only 50% CPU usage for some processes
From: nkjg (anonymous_at_discussions.microsoft.com)
Date: 03/10/04
- Next message: Miratos: "Re: Windows XP Prof Restarting"
- Previous message: Scott: "Scheduled task prompts me for input!?"
- In reply to: InvestYourSelf2: "RE: only 50% CPU usage for some processes"
- Next in thread: MAP: "only 50% CPU usage for some processes"
- Messages sorted by: [ date ] [ thread ]
Date: Tue, 9 Mar 2004 21:26:06 -0800
Hi there,
You're seeing two CPU meters under the task manager
because WinXP "sees" your Hyper-Threading processor as
two separate processors (that's the whole idea behind the
system).
As for only being able to use 50% of the CPU, it may be
for the same reason. Think of your CPU as being split in
half, and each half can work on its own just as well as a
whole processor. Some processes are only able to finish
one calculation at a time.
Say you've written a program that loops through an index
from 1 to 1000. It then does a lot of calculations on
that index a lot of times (just to use up time). The
computer isn't able to take advantage of the hyper-
threading capabilities because the program must wait for
the index to finish before it can move on. If there were
two things to do at once, then you might see a total of
50% usage.
Just to be sure, in task manager, do you see both bars
moving up and down while the CPU is at 50%? Then you are
using the Hyper-Threading capabilities. If one of the
bars is maxed out and the other is empty, then you've got
a situation like I described above.
Hope this helps,
Nick
>-----Original Message-----
>Sounds like you have no problem. You have an Intel p4
processor with Hyper-Threading Technology requires a
computer system with an Intel® Pentium® 4 processor
supporting HT Technology and a Hyper-Threading Technology
enabled chipset, BIOS and operating system. Performance
will vary depending on the specific hardware and software
you use. See http://www.intel.com/info/hyperthreading/
for more information including details on which
processors support HT Technology.
>Review above info for better understanding.
>
>The best to you Joes...
>.
>
- Next message: Miratos: "Re: Windows XP Prof Restarting"
- Previous message: Scott: "Scheduled task prompts me for input!?"
- In reply to: InvestYourSelf2: "RE: only 50% CPU usage for some processes"
- Next in thread: MAP: "only 50% CPU usage for some processes"
- Messages sorted by: [ date ] [ thread ]
Relevant Pages
|
