Hi...

MY PROBLEM

The CPU rarely goes below 50% and frequently goes and stays at 100%. To
diagnose a possible problematic device driver, I tried the following:

PROCESS EXPLORER (says...)

SysInternals app "Process Explorer" says that the processor is
overwhelmingly occupied by DPCs and Interrupts.

(MICROSOFT RATTV3)

"Rattv3" displays the response time of drivers. It diagnoses:

- Audio and video "glitches"
- Problems with other devices by overly delaying the execution of other ISRs
and DPCs
- Interference with applications due to over use of CPU time

MICROSOFT RATTV (says...)

Here is the first run. Can someone *capable of interpreting* this please
this help me by picking out a problem driver, based on the execution times?
Your expertise would be greatly appreciated.

http://images.mirrosoft.net/RTTV3_report.mht

Nick

xp pro on SBS domain
Athlon 3200+
1.5 gb PC3200

"Nick" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi...

> MICROSOFT RATTV (says...)
>
> Here is the first run. Can someone *capable of interpreting* this please
> this help me by picking out a problem driver, based on the execution
> times? Your expertise would be greatly appreciated.
>
> http://images.mirrosoft.net/RTTV3_report.mht
>

I'm just now seeing your post because I'm also tracking down a high
interrupt time issue.

It looks like your problem is with NDIS.SYS. I notice that it's the only
driver which has histogram buckets in the millisecond range.

In my case, the culprit appears to be atapi.sys, similarly because of
millisecond buckets.

John

John Saunders wrote:

> "Nick" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...

> I'm just now seeing your post because I'm also tracking down a high
> interrupt time issue.
>
> It looks like your problem is with NDIS.SYS. I notice that it's the only
> driver which has histogram buckets in the millisecond range.
>
> In my case, the culprit appears to be atapi.sys, similarly because of
> millisecond buckets.
>
> John

Hi, I'm having a similar problem, based on what you said previously, my
report would show that I have problems with 3 different drivers, both
that you mentioned before and in addition ACPI.sys, and its this one
that contains the most histogram buckets.

Do you have any idea where to go from here in fixing this?

Cheers,
Jason.

<(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
>
> John Saunders wrote:
>
>> "Nick" <(E-Mail Removed)> wrote in message
>> news:(E-Mail Removed)...
>
>> I'm just now seeing your post because I'm also tracking down a high
>> interrupt time issue.
>>
>> It looks like your problem is with NDIS.SYS. I notice that it's the only
>> driver which has histogram buckets in the millisecond range.
>>
>> In my case, the culprit appears to be atapi.sys, similarly because of
>> millisecond buckets.
>>
>> John
>
> Hi, I'm having a similar problem, based on what you said previously, my
> report would show that I have problems with 3 different drivers, both
> that you mentioned before and in addition ACPI.sys, and its this one
> that contains the most histogram buckets.
>
> Do you have any idea where to go from here in fixing this?
>
> Cheers,
> Jason.

Jason, I answered your post in another newsgroup. The answer is in this
article http://support.microsoft.com/kb/817472/en-us.

John