funcslower: add a note about nested calls

525f3e90 · Ivan Babrou · GitHub · 61bc92ad · 525f3e90
Commit 525f3e90 authored Nov 21, 2017 by Ivan Babrou Committed by GitHub Nov 21, 2017
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tools/funcslower.py tools/funcslower.py +3 -0

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--- a/tools/funcslower.py
+++ b/tools/funcslower.py
@@ -11,6 +11,9 @@
 # return from each function. For commonly-invoked functions like memory allocs
 # or file writes, this can be extremely expensive. Mind the overhead.
 #
+# NOTE: This tool cannot trace nested functions in the same invocation
+# due to instrumentation specifics, only innermost calls will be visible.
+#
 # By default, a minimum millisecond threshold of 1 is used.
 #
 # Copyright 2017, Sasha Goldshtein