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| -rw-r--r-- | doc/hacking.txt | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/doc/hacking.txt b/doc/hacking.txt index 54be7bc..4c5a464 100644 --- a/doc/hacking.txt +++ b/doc/hacking.txt @@ -71,10 +71,14 @@ execution + childrens' times):: $ python -m cProfile -o profile be [command] [args] $ python -c "import pstats; p=pstats.Stats('profile'); p.sort_stats('cumulative').print_stats(20)" -It's often useful to toss:: +If you want to find out who's calling your expensive function +(e.g. :func:`libbe.util.subproc.invoke`), try:: + + $ python -c "import pstats; p=pstats.Stats('profile'); p.sort_stats('cumulative').print_callers(20)" + +You can also toss:: import sys, traceback print >> sys.stderr, '-'*60, '\n', '\n'.join(traceback.format_stack()[-10:]) -into expensive functions (e.g. :func:`libbe.util.subproc.invoke`) if -you're not sure why they're being called. +into the function itself for a depth-first caller list. |