funcslower: add a note about nested calls

pagict · Nov 22, 2017 · 525f3e9 · 525f3e9
1 parent 61bc92a
commit 525f3e9
Showing 1 changed file with 3 additions and 0 deletions.
diff --git 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