diff --git a/lldb/test/README-TestSuite b/lldb/test/README-TestSuite
index ea3926ceed2b..53f3d74d359b 100644
--- a/lldb/test/README-TestSuite
+++ b/lldb/test/README-TestSuite
@@ -90,3 +90,12 @@ o dotest.pl
   suite become more reliable, we don't expect to be using 'dotest.pl' anymore.
 
   Note: dotest.pl has been moved to the attic directory.
+
+o Profiling dotest.py runs
+
+  I used the following command line thingy to do the profiling on a SnowLeopard
+  machine:
+
+$ DOTEST_PROFILE=YES DOTEST_SCRIPT_DIR=/Volumes/data/lldb/svn/trunk/test /System/Library/Frameworks/Python.framework/Versions/Current/lib/python2.6/cProfile.py -o my.profile ./dotest.py -v -w 2> ~/Developer/Log/lldbtest.log
+
+  After that, I used the pstats.py module to browse the statistics.
diff --git a/lldb/test/dotest.py b/lldb/test/dotest.py
index 5c6be195512d..578850c6edd6 100755
--- a/lldb/test/dotest.py
+++ b/lldb/test/dotest.py
@@ -439,7 +439,10 @@ def setupSysPath():
     global testdirs
 
     # Get the directory containing the current script.
-    scriptPath = sys.path[0]
+    if "DOTEST_PROFILE" in os.environ and "DOTEST_SCRIPT_DIR" in os.environ:
+        scriptPath = os.environ["DOTEST_SCRIPT_DIR"]
+    else:
+        scriptPath = sys.path[0]
     if not scriptPath.endswith('test'):
         print "This script expects to reside in lldb's test directory."
         sys.exit(-1)