DPCLAT - DPC Latency Checker Tool

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DPCLAT - DPC Latency Checker Tool


DPCLAT - DPC Latency Checker Tool

System Dependencies
Minimum PowerSDR Version:
All Windows versions
Applicable Hardware: N/A

Content provided by: FlexRadio Systems Engineering

This KB article references the DPC Latency checker (dpclat.exe) by Thesycon that can be used to analyze you system for excessive or abnormally long DPC (differed procedure calls) that adversely effect applications that run in real time, such as PowerSDR. Below is some information from the Thesycon web site.

The DPC Latency Checker tool determines the maximum DPC latency that occurs on your Windows system and thus enables you to check the real-time capabilities of your computer. DPC Latency Checker works independent of any external hardware. Using this tool may be helpful in the following situations:
  • You experience interruptions (drop-outs) in a flow of data processed in real-time, for example an audio stream, video stream or a sequence of measuring data, and you want to find out the reason for this problem.
  • You want to verify that your Windows system is configured properly so that it is capable of handling real-time data transfer before you install the corresponding streaming application.
  • You want to check if a particular computer system is suitable for streaming applications, for example before you buy this system.
If any kernel-mode device driver in your Windows system is implemented improperly and causes excessive latencies of Deferred Procedure Calls (DPCs) then probably drop-outs will occur when you use real-time audio or video streaming applications.

Use the Related Links below to download the most recent version of the DPC Latency Tool, how to use it to determine if you have excessive latencies possible strategies to resolve the problems resulting from excessive DPCs


This KB article may reference additional files that are available on the FlexRadio Systems web site Downloads page. Please use the URL(s) below to download the referenced materials.

An Adobe Acrobat Reader may be required to open the file. You can download Adobe Acrobat from here.

KB Source Document(s):

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Details
Last Modified:Monday, June 20, 2011
Last Modified By: Administrator
Type: Software
Rated 4 stars based on 3 votes.
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