Trace: Storport ETW: Unterschied zwischen den Versionen

Version vom 16. August 2018, 13:10 Uhr

It provides a measure of time delay (latency) for requests made to a system’s disk unit. The measurements are taken form the Storport.sys driver, the lowest Microsoft component in the Storage Stack.
This means It only includes the latency for the components BELOW the Storport driver, normally they only include:

• The Storage Adapter Miniport Driver (Hardware device driver)
• The hardware layers (Storage Controller, Cables, Disk, etc)

Prerequisites

• XPerf und Windows Performance Analyzer installed
• Excel installed
• PowerPivot in Excel enabled

Enable PowerPivot in Excel

Here’s how you enable Power Pivot before using it for the first time:

• Go to File > Options > Add-Ins.
• In the Manage box, click COM Add-ins > Go.
• Check the Microsoft Office Power Pivot box, and then click OK.

Create and run storport trace

storport" -ow -o c:\temp\storport.etl -p "Microsoft-Windows-StorPort" 0xffffffffffffffff 0xff -nb 16 16 -bs 1024 -mode Circular -f bincirc -max 4096 -ets

Convert manually storport trace to a readable file (csv)

xperf -i storport.ETL -o raw-xperf.csv

Create Excel PowerPivot Table with the readable file (csv)

"Register" the following PowerShell function

Run the PowerShell function

Convert-ETWTraceToReadableFileCSV -RAWXPerfCSVPath C:\StorPortPACMAN\old-raw-xperf.csv

More Informations
Made a Storport Trace with GUI: https://blogs.msdn.microsoft.com/ntdebugging/2010/04/22/storport-etw-logging-to-measure-requests-made-to-a-disk-unit/
How to Look at Storport ETW Trace Logs: https://social.technet.microsoft.com/wiki/contents/articles/11982.how-to-look-at-storport-etw-trace-logs.aspx

Measuring Disk Latency with Windows Performance Monitor (Perfmon): https://blogs.technet.microsoft.com/askcore/2012/02/07/measuring-disk-latency-with-windows-performance-monitor-perfmon/