[Haskell-cafe] how do FFI calls show up in profiling info?

Johannes Waldmann johannes.waldmann at htwk-leipzig.de
Tue Aug 21 12:02:29 UTC 2018

Dear Cafe,

how would FFI calls show up in profiles?

I am using hmatrix-glpk. The relevant FFI call is in

I am compiling with profiling (for executables and libraries),
and I am running with +RTS -P .
The .prof file does not contain  c_simplex_sparse (the C function)

It does mention  simplexSparse (the Haskell function that calls it)
but with a suspiciously low time.

- J.W.

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