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-rw-r--r--README11
1 files changed, 11 insertions, 0 deletions
diff --git a/README b/README
index 6846822..3ac7232 100644
--- a/README
+++ b/README
@@ -33,4 +33,15 @@ Command line interface
--perf <path> [default: perf]
* name of perf binary to use for analysing perf.data file
+Interpreting output
+===================
+Each column shows the activity on a particular CPU. Each row represents
+the behaviour of the system for a slice of time while the profile data
+was collected.
+
+If a thread is selected in the top menu, then all cells in the matrix where
+that thread used CPU are highlighted.
+
+When the mouse pointer hovers over a cell in the matrix a profile is displayed
+showing which symbols were consuming CPU time on that CPU in that time slice.