Take a look and see if you have turned off Windows Search in the Administrative 
Services control panel. I bet its Windows indexing the file system.

73
On Sep 4, 2012, at 12:13 PM, "Peter G. Viscarola" <[email protected]> wrote:

> It seems you have a device that's causing an "interrupt storm."
> 
> It's tough to diagnose this without the sort of tools a developer would use.
> 
> If *I* were trying to diagnose this, I'd use XPERF... it's not easy to use, 
> and iit only provides limited support for Windows XP.  It ships as part of 
> the Windows SDK.
> 
> I'm sorry, I know that's not particularly helpful.  But I'm not aware of a 
> simpler tool that'll help diagnose this problem (which is pretty rare).
> 
> P
> 
>> -----Original Message-----
>> From: [email protected] [mailto:flexedge-bounces@flex-
>> radio.biz] On Behalf Of Al K0VM
>> Sent: Tuesday, September 4, 2012 12:01 PM
>> To: [email protected]
>> Cc: [email protected]
>> Subject: Re: [FlexEdge] Interrupt debug
>> 
>> Dudley,
>>   Thanks for the response, but Process Explorer show the top two CPU
>> usages as System Idle and Interrupts !
>>   Strange..
>>   Luckily, a reboot fixes it and PSDR continues to run in spite of it..
>> I doubt if earlier versions of PSDR would.
>> 
>> AL, K0VM
>> 
>> On 9/4/2012 10:27 AM, FlexRadio Support, Dudley Hurry wrote:
>>> Al,
>>> 
>>> If you open Task manager, to Show process (for all users, checked at
>>> the bottom)  If you click the "CPU"  title at the top, the highest CPU
>>> usage process will start at the top.  Eating that much CPU should be
>>> easy to determine which process is causing the big CPU burn.
>>> Hopefully is something that you will recognize,   at least in Win7 you
>>> can do a right click and it will tell you from which folder that
>>> process came from.   Things like remote control SW (VNC variants)  can
>>> go into the weeds from time to time,  or some driver with a memory leak.
>>> 
>>> Hope this helps.
>>> 
>>> 
>>> 73,
>>> Dudley
>>> 
>>> WA5QPZ
>>> FlexRadio Systems
>>> 
>>> (512) 535-4713, Option 2
>>> Email: [email protected] <mailto:[email protected]>
>>> Web: www.flexradio.com <http://www.flex-radio.com>
>>> 
>>> 
>>> 
>>> Chat
>>> 
>> <https://www.crossloop.com/FlexRadioSupport?type=email%22+target%3D
>> %22
>>> 
>> _blank%22%3E%3Cimg+border%3D%220%22+src%3D%22https://www.crossl
>> oop.com
>>> /images/badge-sm-
>> gray.jpg%22+alt=%22Get+help+from+Dudley+%28WA5QPZ&%23
>>> 41;+Hurry>
>>> 
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>>> 4616 W Howard Ln Ste 1-150
>>> Austin, TX 78728
>>> 
>>> logo
>>> /Tune In Excitement(tm)/
>>> PowerSDR(tm) is a trademark of FlexRadio Systems
>>> 
>>> 
>>> 
>>> 
>>> 
>>> On Tue, Sep 4, 2012 at 10:05 AM, Al K0VM <[email protected]
>>> <mailto:[email protected]>> wrote:
>>> 
>>>         This is a bit off-topic but...
>>>         I am having a problem with, what appears, to be a torrent of
>>>    interrupts consuming 50% of CPU...  They arrive after several
>>>    hours of operation and don't really seem to effect current
>>>    versions of PSDR.
>>>         Once in the torrent mode, I can shut down all apps,
>>>    disconnect all external hardware ( except the monitors ) and the
>>>    interrupt portion of the the CPU usage remains at 40-50% ( as
>>>    reported by Process Explorer ).
>>>         Is there any debugging app for WinXP available that will
>>>    indentify the source of interrupts ?
>>> 
>>>    AL, K0VM
>>> 
>>> 
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>>>     It is used for posting topics related to SDR software innovation
>>>    and other technical SDR topics.
>>> 
>>> 
>> 
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>> topics.
> 
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