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KDAB / hotspot

The Linux perf GUI for performance analysis.
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Can/will it be possible to use hotspot with framepointers? #646

Closed meastp closed 3 months ago

meastp commented 3 months ago

Hi,

I'm a novice on profiing, so this might be a silly question / I might have misunderstood what the requirements are, but:

First of all, record some data with perf. To get backtraces, you will need to enable the dwarf callgraph mode:

Is it possible / will it be possible to use frame pointers instead? Now that recent distributions build with frame pointers[1], it would be useful to be able to use frame pointers instead of dwarf.

[1] https://www.brendangregg.com/blog/2024-03-17/the-return-of-the-frame-pointers.html

milianw commented 3 months ago

You can use frame pointers, hotspot supports them just fine. If not, report a bug.

Just make sure that that all code, including thirdparty libraries, has them. This is not yet the case for a lot of distros or binary blobs.