diff --git a/basic_report.rb b/basic_report.rb
index 5977a0bd4..ab7b5cd47 100755
--- a/basic_report.rb
+++ b/basic_report.rb
@@ -149,3 +149,5 @@ def ts_string_to_date(ts)
     #print report.to_s
     #puts
 end
+
+printf "Basic report RSS: %dMB\n", `ps -p #{$$} -o rss=`.to_i / 1024
diff --git a/timeline_report.rb b/timeline_report.rb
index e831fbff4..358fbb0da 100755
--- a/timeline_report.rb
+++ b/timeline_report.rb
@@ -137,3 +137,5 @@ def ruby_desc_to_sha(ruby_desc)
     report = report_class_by_name[report_name].new context
     report.write_files(output_dir)
 end
+
+printf "Timeline report RSS: %dMB\n", `ps -p #{$$} -o rss=`.to_i / 1024