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.ETL File Extension

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File TypeMicrosoft Event Trace Log File

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CategorySystem Files


This file is saved in a binary format, which requires a specific program to read its contents.


Log file created by Microsoft Tracelog, a program that creates logs using the events from the kernel in Microsoft operating systems; contains binary log data at the trace level, such as disk accesses or page faults; used to log high-frequency events while tracking the performance of an operating system.

More Information

Reports may be generated from ETL files using the command-line utility Tracerpt. ETL file output may be configured with several options, such as a maximum allowable file size, so that the logs do not cause a computer run out of disk space.

Programs that open ETL files
Microsoft Event Viewer
Microsoft Tracelog
Microsoft Tracerpt
Microsoft Tracedmp
Updated 1/8/2010