inferno: sort threads by the event count in a thread.

Sometimes a thread having only several samples comes first, and looks
like it is the most important thread. So sort threads by the event
count to make really important threads shows first.

Bug: none.
Test: run inferno.sh.
Change-Id: Ic8406fb19d72d2599c78589d9f4876875dad00e8

1 files changed, 2 insertions, 9 deletions

diff --git a/simpleperf/scripts/inferno/inferno.py b/simpleperf/scripts/inferno/inferno.py
index 834bbbbb..ad64f9af 100644
--- a/simpleperf/scripts/inferno/inferno.py
+++ b/simpleperf/scripts/inferno/inferno.py
@@ -186,15 +186,8 @@ def output_report(process, args):
     if not args.embedded_flamegraph:
         f.write("<script>document.addEventListener('DOMContentLoaded', flamegraphInit);</script>")
 
-    # Output tid == pid Thread first.
-    main_thread = [x for x in process.threads.values() if x.tid == process.pid]
-    for thread in main_thread:
-        f.write("<br/><br/><b>Main Thread %d (%s) (%d samples):</b><br/>\n\n\n\n" % (
-                thread.tid, thread.name, thread.num_samples))
-        renderSVG(thread.flamegraph, f, args.color)
-
-    other_threads = [x for x in process.threads.values() if x.tid != process.pid]
-    for thread in other_threads:
+    # Sort threads by the event count in a thread.
+    for thread in sorted(process.threads.values(), key=lambda x: x.event_count, reverse=True):
         f.write("<br/><br/><b>Thread %d (%s) (%d samples):</b><br/>\n\n\n\n" % (
                 thread.tid, thread.name, thread.num_samples))
         renderSVG(thread.flamegraph, f, args.color)