Parse Raw-Trace File

[Wanfeng Ma]

一. Parse by SQL Query:

When I generated raw-trace file by use perfetto heapprofd script and put it to perfetto ui, I can get some inner infomation by use SQL Query，But there exist some problem as following:

1. Whether there just exits five table include all information of raw-trace？Whether I can use the five tables recover all raw-trace included infomation? 

2. When receive a much number of data by execute sql query, the perfetto ui only display 9999 item infomation, whether exits some method or config can display all query item.

二. Parse by API

1. Whether exits some api(python or C++ or other language) that can directly parse the native heap raw-trace file?

thank you!

[Lalit Maganti]

On Wed, 12 Jul 2023 at 13:57, Wanfeng Ma <wanf...@gmail.com> wrote:

一. Parse by SQL Query:

When I generated raw-trace file by use perfetto heapprofd script and put it to perfetto ui, I can get some inner infomation by use SQL Query，But there exist some problem as following:

1. Whether there just exits five table include all information of raw-trace？Whether I can use the five tables recover all raw-trace included infomation? 

Those tables include the data for heap profiles. https://perfetto.dev/docs/analysis/sql-tables contains all the tables available in trace processor.

 

2. When receive a much number of data by execute sql query, the perfetto ui only display 9999 item infomation, whether exits some method or config can display all query item.

二. Parse by API

1. Whether exits some api(python or C++ or other language) that can directly parse the native heap raw-trace file?

The suggestion for both these questions would be to use the Trace Processor Python API: https://perfetto.dev/docs/analysis/trace-processor#python-api

 

thank you!

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[Wanfeng Ma]

Thank you for your reply, whether there exits some specific sql query command that can directly output unreleased malloc size、unrealeased malloc count、Total malloc size、Total malloc count to all function name?  thank you!

[Lalit Maganti]

There's no easy single answer I can give but looking at what the UI does for those buttons would be a good way to go: here and here

You should be able to hack together a query based on those snippets.

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