How to force Event Trace Session to flush data more often?

Question

I have a driver that writes alot of trace logs using WPP.

I have configured an AutoLogger registry key entry to write the events to an .etl file.

The logging session is started successfully and the file is created, but it appears that the data is flushed to disk once in a long while. Is it possible to make it flush data more often or even in real time?

I tried playing with the "Flush Timer" but based on what is written in MSDN and on the effect it had it is not what I am looking for.

Thanks.

score 0 · Answer 1 · answered Apr 29 '12 at 23:18

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That seems like an error in the documentation, in all other places where you configure the FlushTimer you will get what you want: the events in your buffer flushed to your session (no matter if real-time or file). I think that you somehow missed something in your test while trying it.

answered Apr 29 '12 at 23:18

randseq

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It doesn't still seem to write the buffer with each new message. I guess it depends on the buffer sizes (buffers are flushed only when they get full). – Grim Apr 30 '12 at 10:45

score 0 · Answer 2 · answered Apr 07 '15 at 18:30

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You can force the buffer to be flushed using ControlTrace using the EVENT_TRACE_CONTROL_FLUSH control code.

answered Apr 07 '15 at 18:30

ALOToverflow

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How to force Event Trace Session to flush data more often?

2 Answers2