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[Libunwind-devel] Performance issue with tdep_get_elf_image()

From: Bruna Moreira
Subject: [Libunwind-devel] Performance issue with tdep_get_elf_image()
Date: Wed, 28 May 2008 14:15:14 -0400


I was using the libunwind to get **a lot** of backtraces. Running my
program with oprofile, we have the following output:

samples  %        symbol name
69163    73.5307  _Uarm_get_elf_image
6496      6.9062  _Uarm_dwarf_extract_proc_info_from_fde
3249      3.4542  run_cfi_program
2947      3.1331  apply_reg_state

On the libunwind, it was detected that tdep_get_elf_image() is the
function that takes the longest CPU time, according to oprofile. Is
there any way to improve this?

Any suggestions are welcome!


Bruna Moreira
Instituto Nokia de Tecnologia (INdT)
Manaus - Brazil

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