cpu usage hovers around 50%

April 23, 2008

I am using Win XP Pro x64 at work for 3D CAD. The cpu usage hovers around

50% when the 3D CAD is doing calculations. Most of the time the HD is idling

and I have enough memory for the job, so I presume these two items are not

dragging the system. I can tell I am spending an hour per day accumulatively

on waiting and I certainly want to cut this down.

There is a hotfix KB896256 for the XP SP2, but it seems not for the 64 bit

machine as the installation warns me "This KB896256 is for a different

hardware platform." Has anyone experienced the same and is there any other

tweak?

Hardware:

ASUS P5K

Intel Core 2 Duo E6550

8GB DDR2 800MHz

NVidia Quadro FX1500

Seagate 250GB HDD

April 23, 2008

RE: cpu usage hovers around 50%

Hi,

That update (http://support.microsoft.com/kb/896256/en-us) applies only to

32-bit XP.

Carlos

"cpw" wrote:

> I am using Win XP Pro x64 at work for 3D CAD. The cpu usage hovers around

> 50% when the 3D CAD is doing calculations. Most of the time the HD is idling

> and I have enough memory for the job, so I presume these two items are not

> dragging the system. I can tell I am spending an hour per day accumulatively

> on waiting and I certainly want to cut this down.

>

> There is a hotfix KB896256 for the XP SP2, but it seems not for the 64 bit

> machine as the installation warns me "This KB896256 is for a different

> hardware platform." Has anyone experienced the same and is there any other

> tweak?

>

> Hardware:

> ASUS P5K

> Intel Core 2 Duo E6550

> 8GB DDR2 800MHz

> NVidia Quadro FX1500

> Seagate 250GB HDD

April 23, 2008

Re: cpu usage hovers around 50%

In any case, the issue addressed in the KB arises with AMD and not Intel.

"cpw" <cpw@discussions.microsoft.com> wrote in message

news:AD100A3D-8A44-4669-A024-FA88B4E17EAB@microsoft.com...

>I am using Win XP Pro x64 at work for 3D CAD. The cpu usage hovers around

> 50% when the 3D CAD is doing calculations. Most of the time the HD is

> idling

> and I have enough memory for the job, so I presume these two items are not

> dragging the system. I can tell I am spending an hour per day

> accumulatively

> on waiting and I certainly want to cut this down.

>

> There is a hotfix KB896256 for the XP SP2, but it seems not for the 64 bit

> machine as the installation warns me "This KB896256 is for a different

> hardware platform." Has anyone experienced the same and is there any

> other

> tweak?

>

> Hardware:

> ASUS P5K

> Intel Core 2 Duo E6550

> 8GB DDR2 800MHz

> NVidia Quadro FX1500

> Seagate 250GB HDD

April 23, 2008

Re: cpu usage hovers around 50%

Frankly, that's probably the best you're going to do on that particular

application. It's worth looking at the numbers on memory usage and I/O, just

in case.

--

Charlie.

http://msmvps.com/blogs/xperts64

http://mvp.support.microsoft.com/profile/charlie.russel

"cpw" <cpw@discussions.microsoft.com> wrote in message

news:AD100A3D-8A44-4669-A024-FA88B4E17EAB@microsoft.com...

>I am using Win XP Pro x64 at work for 3D CAD. The cpu usage hovers around

> 50% when the 3D CAD is doing calculations. Most of the time the HD is

> idling

> and I have enough memory for the job, so I presume these two items are not

> dragging the system. I can tell I am spending an hour per day

> accumulatively

> on waiting and I certainly want to cut this down.

>

> There is a hotfix KB896256 for the XP SP2, but it seems not for the 64 bit

> machine as the installation warns me "This KB896256 is for a different

> hardware platform." Has anyone experienced the same and is there any

> other

> tweak?

>

> Hardware:

> ASUS P5K

> Intel Core 2 Duo E6550

> 8GB DDR2 800MHz

> NVidia Quadro FX1500

> Seagate 250GB HDD

April 23, 2008

Re: cpu usage hovers around 50%

What CAD package is it ? Is it multi threaded (sounds like it is not) ? If

it is not the behaviour you are seeing is as expected. You have 2 cores so

when showing 50% the PC is using half of it total available processing power

i.e one core.

A couple of our workstations have Quad core CPU's in them however when

running our 3D package, which is not multi threaded the CPU usage shows 25%.

If you want the calculation time to reduce then you could overclock your CPU

or buy a faster one.

Regards

Martin

"cpw" <cpw@discussions.microsoft.com> wrote in message

news:AD100A3D-8A44-4669-A024-FA88B4E17EAB@microsoft.com...

> I am using Win XP Pro x64 at work for 3D CAD. The cpu usage hovers around

> 50% when the 3D CAD is doing calculations. Most of the time the HD is

idling

> and I have enough memory for the job, so I presume these two items are not

> dragging the system. I can tell I am spending an hour per day

accumulatively

> on waiting and I certainly want to cut this down.

>

> There is a hotfix KB896256 for the XP SP2, but it seems not for the 64 bit

> machine as the installation warns me "This KB896256 is for a different

> hardware platform." Has anyone experienced the same and is there any

other

> tweak?

>

> Hardware:

> ASUS P5K

> Intel Core 2 Duo E6550

> 8GB DDR2 800MHz

> NVidia Quadro FX1500

> Seagate 250GB HDD

April 26, 2008

Re: cpu usage hovers around 50%

Odd enough. The cpu is Intel, but the XP64 recognizes it as an AMD64 as seen

on the Computer's properties.

Is it a clue?

"Colin Barnhorst" wrote:

> In any case, the issue addressed in the KB arises with AMD and not Intel.

>

> "cpw" <cpw@discussions.microsoft.com> wrote in message

> news:AD100A3D-8A44-4669-A024-FA88B4E17EAB@microsoft.com...

> >I am using Win XP Pro x64 at work for 3D CAD. The cpu usage hovers around

> > 50% when the 3D CAD is doing calculations. Most of the time the HD is

> > idling

> > and I have enough memory for the job, so I presume these two items are not

> > dragging the system. I can tell I am spending an hour per day

> > accumulatively

> > on waiting and I certainly want to cut this down.

> >

> > There is a hotfix KB896256 for the XP SP2, but it seems not for the 64 bit

> > machine as the installation warns me "This KB896256 is for a different

> > hardware platform." Has anyone experienced the same and is there any

> > other

> > tweak?

> >

> > Hardware:

> > ASUS P5K

> > Intel Core 2 Duo E6550

> > 8GB DDR2 800MHz

> > NVidia Quadro FX1500

> > Seagate 250GB HDD

>

April 26, 2008

Re: cpu usage hovers around 50%

It is CATIA and it is not multi-thread as told by the agent.

The XP64 is running 50% on each core that is shown on the cpu usage history,

so it is 50% overall. In the Quad core case, I guess each core is running at

25% as well so the total is 25%. I am wondering if the OS considers the cpu

as only one piece despite of the number of core.

Thus, I assume that it is the OS who limits the percentage of cpu

utilization. Over-clocking or buying a faster cpu are not options for me.

BTW, as the cpu power is there, why shouldn't I be able to use them all?

"Martin G" wrote:

> What CAD package is it ? Is it multi threaded (sounds like it is not) ? If

> it is not the behaviour you are seeing is as expected. You have 2 cores so

> when showing 50% the PC is using half of it total available processing power

> i.e one core.

>

> A couple of our workstations have Quad core CPU's in them however when

> running our 3D package, which is not multi threaded the CPU usage shows 25%.

>

> If you want the calculation time to reduce then you could overclock your CPU

> or buy a faster one.

>

> Regards

>

> Martin

>

> "cpw" <cpw@discussions.microsoft.com> wrote in message

> news:AD100A3D-8A44-4669-A024-FA88B4E17EAB@microsoft.com...

> > I am using Win XP Pro x64 at work for 3D CAD. The cpu usage hovers around

> > 50% when the 3D CAD is doing calculations. Most of the time the HD is

> idling

> > and I have enough memory for the job, so I presume these two items are not

> > dragging the system. I can tell I am spending an hour per day

> accumulatively

> > on waiting and I certainly want to cut this down.

> >

> > There is a hotfix KB896256 for the XP SP2, but it seems not for the 64 bit

> > machine as the installation warns me "This KB896256 is for a different

> > hardware platform." Has anyone experienced the same and is there any

> other

> > tweak?

> >

> > Hardware:

> > ASUS P5K

> > Intel Core 2 Duo E6550

> > 8GB DDR2 800MHz

> > NVidia Quadro FX1500

> > Seagate 250GB HDD

>

April 26, 2008

Re: cpu usage hovers around 50%

This one gives a hint.

http://msmvps.com/blogs/xperts64/archive/2007/11/11/the-multi-core-fallacy.aspx

But I am not satisfied because why should I be limited to only 50% on a

dual-core and 25% on a quad-core?

Lucky enough I didn't jump into a quad-core setup when making the purchase

decision.

"Charlie Russel - MVP" wrote:

> Frankly, that's probably the best you're going to do on that particular

> application. It's worth looking at the numbers on memory usage and I/O, just

> in case.

>

> --

> Charlie.

> http://msmvps.com/blogs/xperts64

> http://mvp.support.microsoft.com/profile/charlie.russel

>

> "cpw" <cpw@discussions.microsoft.com> wrote in message

> news:AD100A3D-8A44-4669-A024-FA88B4E17EAB@microsoft.com...

> >I am using Win XP Pro x64 at work for 3D CAD. The cpu usage hovers around

> > 50% when the 3D CAD is doing calculations. Most of the time the HD is

> > idling

> > and I have enough memory for the job, so I presume these two items are not

> > dragging the system. I can tell I am spending an hour per day

> > accumulatively

> > on waiting and I certainly want to cut this down.

> >

> > There is a hotfix KB896256 for the XP SP2, but it seems not for the 64 bit

> > machine as the installation warns me "This KB896256 is for a different

> > hardware platform." Has anyone experienced the same and is there any

> > other

> > tweak?

> >

> > Hardware:

> > ASUS P5K

> > Intel Core 2 Duo E6550

> > 8GB DDR2 800MHz

> > NVidia Quadro FX1500

> > Seagate 250GB HDD

>

April 26, 2008

Re: cpu usage hovers around 50%

That does not mean it thinks it is an AMD brand cpu. AMD64 is the generic

classification for all 64bit cpus that support backwards compatibility with

the x86 instruction set. It is called AMD64 because AMD was the first out

with such a 64bit cpu just as x86 is the generic classification for cpus

that use the instruction set that debuted with the Intel 8086 cpu regardles

of the maufacturer of the chip.

"cpw" <cpw@discussions.microsoft.com> wrote in message

news:22AC459E-72E2-4820-8891-FBEF0CEF8E41@microsoft.com...

> Odd enough. The cpu is Intel, but the XP64 recognizes it as an AMD64 as

> seen

> on the Computer's properties.

> Is it a clue?

>

> "Colin Barnhorst" wrote:

>

>> In any case, the issue addressed in the KB arises with AMD and not Intel.

>>

>> "cpw" <cpw@discussions.microsoft.com> wrote in message

>> news:AD100A3D-8A44-4669-A024-FA88B4E17EAB@microsoft.com...

>> >I am using Win XP Pro x64 at work for 3D CAD. The cpu usage hovers

>> >around

>> > 50% when the 3D CAD is doing calculations. Most of the time the HD is

>> > idling

>> > and I have enough memory for the job, so I presume these two items are

>> > not

>> > dragging the system. I can tell I am spending an hour per day

>> > accumulatively

>> > on waiting and I certainly want to cut this down.

>> >

>> > There is a hotfix KB896256 for the XP SP2, but it seems not for the 64

>> > bit

>> > machine as the installation warns me "This KB896256 is for a different

>> > hardware platform." Has anyone experienced the same and is there any

>> > other

>> > tweak?

>> >

>> > Hardware:

>> > ASUS P5K

>> > Intel Core 2 Duo E6550

>> > 8GB DDR2 800MHz

>> > NVidia Quadro FX1500

>> > Seagate 250GB HDD

>>

April 26, 2008

Re: cpu usage hovers around 50%

Because the software you're running doesn't know how to use more.

The fact is that most software today is single threaded. That means it can

only use one core effectively. Now, if you run a lot of different programs

at once, it doesn't matter that each program is single threaded. They get

spread across the available cores to balance the load. But when you're

basically only doing one task, it will only use that one CPU.

--

Charlie.

http://msmvps.com/blogs/xperts64

http://mvp.support.microsoft.com/profile/charlie.russel

"cpw" <cpw@discussions.microsoft.com> wrote in message

news:E72B6FB4-B761-4433-8B75-917D05E9BBB7@microsoft.com...

> This one gives a hint.

> http://msmvps.com/blogs/xperts64/archive/2007/11/11/the-multi-core-fallacy.aspx

> But I am not satisfied because why should I be limited to only 50% on a

> dual-core and 25% on a quad-core?

> Lucky enough I didn't jump into a quad-core setup when making the purchase

> decision.

>

> "Charlie Russel - MVP" wrote:

>

>> Frankly, that's probably the best you're going to do on that particular

>> application. It's worth looking at the numbers on memory usage and I/O,

>> just

>> in case.

>>

>> --

>> Charlie.

>> http://msmvps.com/blogs/xperts64

>> http://mvp.support.microsoft.com/profile/charlie.russel

>>

>> "cpw" <cpw@discussions.microsoft.com> wrote in message

>> news:AD100A3D-8A44-4669-A024-FA88B4E17EAB@microsoft.com...

>> >I am using Win XP Pro x64 at work for 3D CAD. The cpu usage hovers

>> >around

>> > 50% when the 3D CAD is doing calculations. Most of the time the HD is

>> > idling

>> > and I have enough memory for the job, so I presume these two items are

>> > not

>> > dragging the system. I can tell I am spending an hour per day

>> > accumulatively

>> > on waiting and I certainly want to cut this down.

>> >

>> > There is a hotfix KB896256 for the XP SP2, but it seems not for the 64

>> > bit

>> > machine as the installation warns me "This KB896256 is for a different

>> > hardware platform." Has anyone experienced the same and is there any

>> > other

>> > tweak?

>> >

>> > Hardware:

>> > ASUS P5K

>> > Intel Core 2 Duo E6550

>> > 8GB DDR2 800MHz

>> > NVidia Quadro FX1500

>> > Seagate 250GB HDD

>>

April 26, 2008

Re: cpu usage hovers around 50%

In reality, I think you are cheating yourself maintaining this view. You

seem to think the CPU is being limited to run at half it's speed but the 50%

you see is a 'usage' percentage. If you compare your present situation with

having a single core CPU of the same clock frequency, the fact that your

sofware is single threaded means you are having the resources of one spare

CPU to do other things while your CAD project is running at full speed. You

are the only one who can tell if that is a bonus. If it isn't, then at least

it is nobody's fault unless you have alternative software to chose from that

can do your work in multiple threads.

If two guys are given the task of assembling a chickenshed with only one set

of hand tools, that doesn't have to mean they are not working at full

speed - the workforce is only utilized to 50% and if each were having his

own set of tools the job could be finished somewhat sooner, but probably not

in half the time, since working as a team together will be more efficient

anyhow. It is much the same thing for the OS, there is a lot going on under

the surface besides the things you start yourself and all of that will

benefit from not running in a congested environment, while you are doing

your CAD 'thing'.

For myself, my system runs much of the time at 50% or less but I can start

the Flightsimulator and defrag the partition it runs from at the same time,

and if my Anti-Virus then decides to do it's on-line updating while I'm

taking off in the middle of all of this, I don't notice even the briefest

attempt at hesitation. To me that is certainly a bonus!

It's up to you to see it, though. Make an effort to be happy!

(You could even try and start a specifically heavy bit of your CAD problem

solving and the Defragger at the same time while keeping an eye on the

percentage figure - back up first!)

Tony. . .

"cpw" <cpw@discussions.microsoft.com> wrote in message

news:8C982FAE-8211-432D-A1DA-57BE54FF9612@microsoft.com...

> It is CATIA and it is not multi-thread as told by the agent.

>

> The XP64 is running 50% on each core that is shown on the cpu usage

history,

> so it is 50% overall. In the Quad core case, I guess each core is running

at

> 25% as well so the total is 25%. I am wondering if the OS considers the

cpu

> as only one piece despite of the number of core.

>

> Thus, I assume that it is the OS who limits the percentage of cpu

> utilization. Over-clocking or buying a faster cpu are not options for me.

> BTW, as the cpu power is there, why shouldn't I be able to use them all?

>

> "Martin G" wrote:

>

> > What CAD package is it ? Is it multi threaded (sounds like it is not) ?

If

> > it is not the behaviour you are seeing is as expected. You have 2 cores

so

> > when showing 50% the PC is using half of it total available processing

power

> > i.e one core.

> >

> > A couple of our workstations have Quad core CPU's in them however when

> > running our 3D package, which is not multi threaded the CPU usage shows

25%.

> >

> > If you want the calculation time to reduce then you could overclock your

CPU

> > or buy a faster one.

> >

> > Regards

> >

> > Martin

> >

> > "cpw" <cpw@discussions.microsoft.com> wrote in message

> > news:AD100A3D-8A44-4669-A024-FA88B4E17EAB@microsoft.com...

> > > I am using Win XP Pro x64 at work for 3D CAD. The cpu usage hovers

around

> > > 50% when the 3D CAD is doing calculations. Most of the time the HD is

> > idling

> > > and I have enough memory for the job, so I presume these two items are

not

> > > dragging the system. I can tell I am spending an hour per day

> > accumulatively

> > > on waiting and I certainly want to cut this down.

> > >

> > > There is a hotfix KB896256 for the XP SP2, but it seems not for the 64

bit

> > > machine as the installation warns me "This KB896256 is for a different

> > > hardware platform." Has anyone experienced the same and is there any

> > other

> > > tweak?

> > >

> > > Hardware:

> > > ASUS P5K

> > > Intel Core 2 Duo E6550

> > > 8GB DDR2 800MHz

> > > NVidia Quadro FX1500

> > > Seagate 250GB HDD

> >

April 26, 2008

Re: cpu usage hovers around 50%

On Fri, 25 Apr 2008 19:51:00 -0700, cpw

<cpw@discussions.microsoft.com> wrote:

>It is CATIA and it is not multi-thread as told by the agent.

>

>The XP64 is running 50% on each core that is shown on the cpu usage history,

>so it is 50% overall. In the Quad core case, I guess each core is running at

>25% as well so the total is 25%. I am wondering if the OS considers the cpu

>as only one piece despite of the number of core.

>

>Thus, I assume that it is the OS who limits the percentage of cpu

>utilization. Over-clocking or buying a faster cpu are not options for me.

>BTW, as the cpu power is there, why shouldn't I be able to use them all?

>

I assume that CATIA will have support for simultaneous multi core

processing, but you will have to enable it, as you have to if you use

Unigraphics NX.

You should check the documentation.

If you display the load graph for each core separately, you will

notice that one is idle and the other is working hard, that results in

a load percentage of 50%.

It is common, that not every task you perform inside of CATIA will use

multiple cores simultaneously.

At least, you should be able to run two CATIA sessions concurrently to

get the most out of your hardware.

---

Stefan Pendl

Windows XP Pro SP 2

Celeron M 1.3 GHz

752 MB DDR RAM

April 28, 2008

Re: cpu usage hovers around 50%

If your VAR has told you that it is not multi threaded then there is nothing

you can do. You may have only one physical processor in your machine but it

has 2 processors on the die, CATIA would need to be multi threaded to be

able to address both of these simultaneously. If you want to reduce the time

you are waiting for operations to complete all you can do is buy a faster

processor. from you specs you are running a E6550 which is 2.33GHz, there

are faster options out there, the E8500 runs about 30 % faster looking at

specs (3.16GHz).

On the bright side at least you are only waiting an hour a day my Inventor

2008 session was running for 7 hours on Friday and used the processor for

over 3 hours of it.

Regards

Martin

"cpw" <cpw@discussions.microsoft.com> wrote in message

news:8C982FAE-8211-432D-A1DA-57BE54FF9612@microsoft.com...

> It is CATIA and it is not multi-thread as told by the agent.

>

> The XP64 is running 50% on each core that is shown on the cpu usage

history,

> so it is 50% overall. In the Quad core case, I guess each core is running

at

> 25% as well so the total is 25%. I am wondering if the OS considers the

cpu

> as only one piece despite of the number of core.

>

> Thus, I assume that it is the OS who limits the percentage of cpu

> utilization. Over-clocking or buying a faster cpu are not options for me.

> BTW, as the cpu power is there, why shouldn't I be able to use them all?

>

> "Martin G" wrote:

>

> > What CAD package is it ? Is it multi threaded (sounds like it is not) ?

If

> > it is not the behaviour you are seeing is as expected. You have 2 cores

so

> > when showing 50% the PC is using half of it total available processing

power

> > i.e one core.

> >

> > A couple of our workstations have Quad core CPU's in them however when

> > running our 3D package, which is not multi threaded the CPU usage shows

25%.

> >

> > If you want the calculation time to reduce then you could overclock your

CPU

> > or buy a faster one.

> >

> > Regards

> >

> > Martin

> >

> > "cpw" <cpw@discussions.microsoft.com> wrote in message

> > news:AD100A3D-8A44-4669-A024-FA88B4E17EAB@microsoft.com...

> > > I am using Win XP Pro x64 at work for 3D CAD. The cpu usage hovers

around

> > > 50% when the 3D CAD is doing calculations. Most of the time the HD is

> > idling

> > > and I have enough memory for the job, so I presume these two items are

not

> > > dragging the system. I can tell I am spending an hour per day

> > accumulatively

> > > on waiting and I certainly want to cut this down.

> > >

> > > There is a hotfix KB896256 for the XP SP2, but it seems not for the 64

bit

> > > machine as the installation warns me "This KB896256 is for a different

> > > hardware platform." Has anyone experienced the same and is there any

> > other

> > > tweak?

> > >

> > > Hardware:

> > > ASUS P5K

> > > Intel Core 2 Duo E6550

> > > 8GB DDR2 800MHz

> > > NVidia Quadro FX1500

> > > Seagate 250GB HDD

> >

May 2, 2008

Re: cpu usage hovers around 50%

It makes sense.

So, while there is a hot fix KB896256 for the 32 bit XP, do you think there

will be one for the 64 bit soon?

"Charlie Russel - MVP" wrote:

> Because the software you're running doesn't know how to use more.

>

> The fact is that most software today is single threaded. That means it can

> only use one core effectively. Now, if you run a lot of different programs

> at once, it doesn't matter that each program is single threaded. They get

> spread across the available cores to balance the load. But when you're

> basically only doing one task, it will only use that one CPU.

>

> --

> Charlie.

> http://msmvps.com/blogs/xperts64

> http://mvp.support.microsoft.com/profile/charlie.russel

>

> "cpw" <cpw@discussions.microsoft.com> wrote in message

> news:E72B6FB4-B761-4433-8B75-917D05E9BBB7@microsoft.com...

> > This one gives a hint.

> > http://msmvps.com/blogs/xperts64/archive/2007/11/11/the-multi-core-fallacy.aspx

> > But I am not satisfied because why should I be limited to only 50% on a

> > dual-core and 25% on a quad-core?

> > Lucky enough I didn't jump into a quad-core setup when making the purchase

> > decision.

> >

> > "Charlie Russel - MVP" wrote:

> >

> >> Frankly, that's probably the best you're going to do on that particular

> >> application. It's worth looking at the numbers on memory usage and I/O,

> >> just

> >> in case.

> >>

> >> --

> >> Charlie.

> >> http://msmvps.com/blogs/xperts64

> >> http://mvp.support.microsoft.com/profile/charlie.russel

> >>

> >> "cpw" <cpw@discussions.microsoft.com> wrote in message

> >> news:AD100A3D-8A44-4669-A024-FA88B4E17EAB@microsoft.com...

> >> >I am using Win XP Pro x64 at work for 3D CAD. The cpu usage hovers

> >> >around

> >> > 50% when the 3D CAD is doing calculations. Most of the time the HD is

> >> > idling

> >> > and I have enough memory for the job, so I presume these two items are

> >> > not

> >> > dragging the system. I can tell I am spending an hour per day

> >> > accumulatively

> >> > on waiting and I certainly want to cut this down.

> >> >

> >> > There is a hotfix KB896256 for the XP SP2, but it seems not for the 64

> >> > bit

> >> > machine as the installation warns me "This KB896256 is for a different

> >> > hardware platform." Has anyone experienced the same and is there any

> >> > other

> >> > tweak?

> >> >

> >> > Hardware:

> >> > ASUS P5K

> >> > Intel Core 2 Duo E6550

> >> > 8GB DDR2 800MHz

> >> > NVidia Quadro FX1500

> >> > Seagate 250GB HDD

> >>

>

May 2, 2008

Re: cpu usage hovers around 50%

The problem is not Windows. It's the application. When you

see 50% usage on a dual core and 25% using on a quad core

CPU, that's telling you one core is running at 100%, but

since overall system usage is 50% or 25% respective.

If you want the application to utilize more than one core,

then it must be coded to do so.

Don't blame Windows, blame the programmer.

cpw wrote:

> It makes sense.

> So, while there is a hot fix KB896256 for the 32 bit XP, do you think there

> will be one for the 64 bit soon?

>

> "Charlie Russel - MVP" wrote:

>

>> Because the software you're running doesn't know how to use more.

>>

>> The fact is that most software today is single threaded. That means it can

>> only use one core effectively. Now, if you run a lot of different programs

>> at once, it doesn't matter that each program is single threaded. They get

>> spread across the available cores to balance the load. But when you're

>> basically only doing one task, it will only use that one CPU.

>>

>> --

>> Charlie.

>> http://msmvps.com/blogs/xperts64

>> http://mvp.support.microsoft.com/profile/charlie.russel

>>

>> "cpw" <cpw@discussions.microsoft.com> wrote in message

>> news:E72B6FB4-B761-4433-8B75-917D05E9BBB7@microsoft.com...

>>> This one gives a hint.

>>> http://msmvps.com/blogs/xperts64/archive/2007/11/11/the-multi-core-fallacy.aspx

>>> But I am not satisfied because why should I be limited to only 50% on a

>>> dual-core and 25% on a quad-core?

>>> Lucky enough I didn't jump into a quad-core setup when making the purchase

>>> decision.

>>>

>>> "Charlie Russel - MVP" wrote:

>>>

>>>> Frankly, that's probably the best you're going to do on that particular

>>>> application. It's worth looking at the numbers on memory usage and I/O,

>>>> just

>>>> in case.

>>>>

>>>> --

>>>> Charlie.

>>>> http://msmvps.com/blogs/xperts64

>>>> http://mvp.support.microsoft.com/profile/charlie.russel

>>>>

>>>> "cpw" <cpw@discussions.microsoft.com> wrote in message

>>>> news:AD100A3D-8A44-4669-A024-FA88B4E17EAB@microsoft.com...

>>>>> I am using Win XP Pro x64 at work for 3D CAD. The cpu usage hovers

>>>>> around

>>>>> 50% when the 3D CAD is doing calculations. Most of the time the HD is

>>>>> idling

>>>>> and I have enough memory for the job, so I presume these two items are

>>>>> not

>>>>> dragging the system. I can tell I am spending an hour per day

>>>>> accumulatively

>>>>> on waiting and I certainly want to cut this down.

>>>>>

>>>>> There is a hotfix KB896256 for the XP SP2, but it seems not for the 64

>>>>> bit

>>>>> machine as the installation warns me "This KB896256 is for a different

>>>>> hardware platform." Has anyone experienced the same and is there any

>>>>> other

>>>>> tweak?

>>>>>

>>>>> Hardware:

>>>>> ASUS P5K

>>>>> Intel Core 2 Duo E6550

>>>>> 8GB DDR2 800MHz

>>>>> NVidia Quadro FX1500

>>>>> Seagate 250GB HDD

May 4, 2008

Re: cpu usage hovers around 50%

thanx for the info

Theo wrote:

> The problem is not Windows. It's the application. When you see 50%

> usage on a dual core and 25% using on a quad core CPU, that's telling

> you one core is running at 100%, but since overall system usage is 50%

> or 25% respective.

>

> If you want the application to utilize more than one core, then it must

> be coded to do so.

>

> Don't blame Windows, blame the programmer.

>

> cpw wrote:

>> It makes sense.

>> So, while there is a hot fix KB896256 for the 32 bit XP, do you think

>> there will be one for the 64 bit soon?

>>

>> "Charlie Russel - MVP" wrote:

>>

>>> Because the software you're running doesn't know how to use more.

>>>

>>> The fact is that most software today is single threaded. That means

>>> it can only use one core effectively. Now, if you run a lot of

>>> different programs at once, it doesn't matter that each program is

>>> single threaded. They get spread across the available cores to

>>> balance the load. But when you're basically only doing one task, it

>>> will only use that one CPU.

>>>

>>> --

>>> Charlie.

>>> http://msmvps.com/blogs/xperts64

>>> http://mvp.support.microsoft.com/profile/charlie.russel

>>>

>>> "cpw" <cpw@discussions.microsoft.com> wrote in message

>>> news:E72B6FB4-B761-4433-8B75-917D05E9BBB7@microsoft.com...

>>>> This one gives a hint.

>>>> http://msmvps.com/blogs/xperts64/archive/2007/11/11/the-multi-core-fallacy.aspx

>>>>

>>>> But I am not satisfied because why should I be limited to only 50% on a

>>>> dual-core and 25% on a quad-core?

>>>> Lucky enough I didn't jump into a quad-core setup when making the

>>>> purchase

>>>> decision.

>>>>

>>>> "Charlie Russel - MVP" wrote:

>>>>

>>>>> Frankly, that's probably the best you're going to do on that

>>>>> particular

>>>>> application. It's worth looking at the numbers on memory usage and

>>>>> I/O, just

>>>>> in case.

>>>>>

>>>>> --

>>>>> Charlie.

>>>>> http://msmvps.com/blogs/xperts64

>>>>> http://mvp.support.microsoft.com/profile/charlie.russel

>>>>>

>>>>> "cpw" <cpw@discussions.microsoft.com> wrote in message

>>>>> news:AD100A3D-8A44-4669-A024-FA88B4E17EAB@microsoft.com...

>>>>>> I am using Win XP Pro x64 at work for 3D CAD. The cpu usage

>>>>>> hovers around

>>>>>> 50% when the 3D CAD is doing calculations. Most of the time the

>>>>>> HD is

>>>>>> idling

>>>>>> and I have enough memory for the job, so I presume these two items

>>>>>> are not

>>>>>> dragging the system. I can tell I am spending an hour per day

>>>>>> accumulatively

>>>>>> on waiting and I certainly want to cut this down.

>>>>>>

>>>>>> There is a hotfix KB896256 for the XP SP2, but it seems not for

>>>>>> the 64 bit

>>>>>> machine as the installation warns me "This KB896256 is for a

>>>>>> different

>>>>>> hardware platform." Has anyone experienced the same and is there any

>>>>>> other

>>>>>> tweak?

>>>>>>

>>>>>> Hardware:

>>>>>> ASUS P5K

>>>>>> Intel Core 2 Duo E6550

>>>>>> 8GB DDR2 800MHz

>>>>>> NVidia Quadro FX1500

>>>>>> Seagate 250GB HDD

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