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VPC 2007 "stutters"

Source: microsoft.public.virtualpc
Sent: 02/22/2009
From: Markus Betz <(email address - cut out)>
Message:

I had already posted a message under the subject "VPC video output
sometimes hangs for a moment" on 2009-02-17. But I now have more facts
for a more precise description:

I can install either
(A) VPC 2004 on Windows 2000 or
(B) VPC 2007 on Windows XP. ¹)

For (A) all is ok. The virtual PC runs fluently and echoes keyboard
input immediately.

For (B) the PC sometimes seems to stop for a second. I can type a
complete word of about 5 letters before I see it. Also the cursor of a
Windows command prompt or a Linux shell does not always blink in equal
intervals. This is a distinct symptome. Just have a try and stare at the
cursor for 10 or 20 seconds and see yourself.

What is going on there? Has anyone but me noticed this?

Markus

__________
¹) VPC 2007 refused to be installed in Win2K, and VPC 2004 is
extremely slow and reluctant on WinXP (looks like the symptoms
described above but is much much much more bad).

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Related Messages

Re: VPC 2007 "stutters"

Sent: 02/22/2009
From: Robert Comer <(email address - cut out)>
Message:

Is B a laptop?

--
Bob Comer

On Sun, 22 Feb 2009 18:13:56 +0100, Markus Betz <(email address - cut out)> wrote:

Show quoted text

>I had already posted a message under the subject "VPC video output
>sometimes hangs for a moment" on 2009-02-17. But I now have more facts
>for a more precise description:
>
>I can install either
>(A) VPC 2004 on Windows 2000 or
>(B) VPC 2007 on Windows XP. ¹)
>
>For (A) all is ok. The virtual PC runs fluently and echoes keyboard
>input immediately.
>
>For (B) the PC sometimes seems to stop for a second. I can type a
>complete word of about 5 letters before I see it. Also the cursor of a
>Windows command prompt or a Linux shell does not always blink in equal
>intervals. This is a distinct symptome. Just have a try and stare at the
>cursor for 10 or 20 seconds and see yourself.
>
>What is going on there? Has anyone but me noticed this?
>
>Markus
>
>__________
>¹) VPC 2007 refused to be installed in Win2K, and VPC 2004 is
> extremely slow and reluctant on WinXP (looks like the symptoms
> described above but is much much much more bad).

Re: VPC 2007 "stutters"

Sent: 02/22/2009
From: Robert Comer <(email address - cut out)>
Message:

It sounds like a power management issue to me, not a power one.

Make sure the power scheme is set to max performance for one thing,
and try this if that doesn't make a difference:

http://blogs.msdn.com/virtual_pc_guy/archive/2007/03/27/last-resort-for-performance-issues-with-virtual-pc-on-laptops.aspx

(even though it's not a laptop, some of the desktop machines have the
same problems)

--
Bob Comer

On Sun, 22 Feb 2009 18:47:26 +0100, Markus Betz <(email address - cut out)> wrote:

Show quoted text

>Robert Comer wrote:
>> Is B a laptop?
>
>Well, I found the effect also on a laptop.
>
>But I can compare the constellations (A) and (B) on the same hardware:
>A desktop PC with an Intel Core 2 Duo E8500, 3.16 GHz, 2 GB RAM.
>Should have enough power!
>
>Markus

Re: VPC 2007 "stutters"

Sent: 02/22/2009
From: Robert Comer <(email address - cut out)>
Message:

>It works, but the processor is running at full power all the time!

It depends on what's more important I guess, I'll take the heat hit
for performance. My laptop is one of those that doesn't work well
without that fix.

It would be nice if the manufacturers of the chipsets got together and
made a power management standard that worked well for the hosts and
Virtualization too, but right now it's a great big mishmash.

Win2000 didn't do power management at the OS level, maybe that's why.
(if I remember correctly.)

--
Bob Comer

On Sun, 22 Feb 2009 20:16:40 +0100, Markus Betz <(email address - cut out)> wrote:

Show quoted text

>50% of a dual core and the fan turns up (currently I have only a laptop
>within reach). So this seems not to be a really practicable option.
>May be it is not a problem of VPC 2007 but of Windows XP/Vista. With
>Windows 2000 all works fine without tricks and also without stressing
>the processor that much.
>Robert Comer wrote:
>> It sounds like a power management issue to me, not a power one.
>>
>> Make sure the power scheme is set to max performance for one thing,
>> and try this if that doesn't make a difference:
>>
>> http://blogs.msdn.com/virtual_pc_guy/archive/2007/03/27/last-resort-for-performance-issues-with-virtual-pc-on-laptops.aspx
>>
>> (even though it's not a laptop, some of the desktop machines have the
>> same problems)
>
>Hi, Bob.
>
>It works, but the processor is running at full power all the time!
>50% of a dual core and the fan turns up (currently I have only a laptop
>within reach). So this seems not to be a really practicable option.
>
>May be it is not a problem of VPC 2007 but of Windows XP/Vista. With
>Windows 2000 all works fine without tricks and also without stressing
>the processor that much.
>
>Markus

Re: VPC 2007 "stutters"

Sent: 02/22/2009
From: "Ato_Zee" <(email address - cut out)>
Message:

Maybe not enough RAM, can you run Task Manager and
check RAM useage? 2GB may not be enough.

Ever tried Vista Ultimate 64 bit with 512 of RAM, you
type, irritating whirly things whirl, eventually it responds.

Show quoted text

> What is going on there? Has anyone but me noticed this?

Re: VPC 2007 "stutters"

Sent: 02/22/2009
From: Markus Betz <(email address - cut out)>
Message:

Robert Comer wrote:

Well, I found the effect also on a laptop.

But I can compare the constellations (A) and (B) on the same hardware:
A desktop PC with an Intel Core 2 Duo E8500, 3.16 GHz, 2 GB RAM.
Should have enough power!

Markus

Show quoted text

> Is B a laptop?

Re: VPC 2007 "stutters"

Sent: 02/22/2009
From: "Ato_Zee" <(email address - cut out)>
Message:

Could still be insufficient RAM, processor flat out swapping.
Throw an Intel Extreme and 4GB Crucial at it, cheap
off eBay, second user, fixed things for me.
CPU with heatpipe cooler now reported cooler than mobo.

Show quoted text

> > It sounds like a power management issue to me, not a power one.

Re: VPC 2007 "stutters"

Sent: 02/22/2009
From: Markus Betz <(email address - cut out)>
Message:

Robert Comer wrote:

Hi, Bob.

It works, but the processor is running at full power all the time!
50% of a dual core and the fan turns up (currently I have only a laptop
within reach). So this seems not to be a really practicable option.

May be it is not a problem of VPC 2007 but of Windows XP/Vista. With
Windows 2000 all works fine without tricks and also without stressing
the processor that much.

Markus

Show quoted text

> It sounds like a power management issue to me, not a power one.
>
> Make sure the power scheme is set to max performance for one thing,
> and try this if that doesn't make a difference:
>
> http://blogs.msdn.com/virtual_pc_guy/archive/2007/03/27/last-resort-for-performance-issues-with-virtual-pc-on-laptops.aspx
>
> (even though it's not a laptop, some of the desktop machines have the
> same problems)

Re: VPC 2007 "stutters"

Sent: 02/22/2009
From: Markus Betz <(email address - cut out)>
Message:

Ato_Zee wrote:

I Don't think so. Also with Windows XP most of the RAM is unused.

Markus

Show quoted text

>> What is going on there? Has anyone but me noticed this?
>
> Maybe not enough RAM, can you run Task Manager and
> check RAM useage? 2GB may not be enough.

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