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Created April 15, 2016 21:37
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Rust heap profiling with jemalloc
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a.md

I've never done this but I've heard it works.

Configure the Rust build like make JEMALLOC_FLAGS=--enable-prof. You might also want --enable-prof-libunwind.

Then run your program with something lke MALLOC_CONF=prof:true and it should dump stats to files called "jeprof*.out". Then you use the jeprof tool, which I am not sure how to get, to interpret it.

Here's a page with some ideas.

@hicqu
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hicqu commented Apr 1, 2021

I have tested it and it really works.

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