chore: fixed color indicator for sleeping states

README.md

@@ -68,7 +68,8 @@ Merge the viztracer and perf/per4m results into a single html file.
 Identify the problem (GIL visible, possible low instruction counts/cycle):
 
 
-![image](https://user-images.githubusercontent.com/1765949/102130936-c4cd6400-3e51-11eb-9ded-7b9bd77a09db.png)
+![image](https://user-images.githubusercontent.com/1765949/102187104-db0c0c00-3eb3-11eb-93ef-e6d938d9e349.png)
 
-The purple 'S' blocks indicate the threads/processes are in a waiting state, this is clearly the GIL at work, which is switching after [`sys.getswitchinterval`](https://docs.python.org/3/library/sys.html#sys.getswitchinterval) (0.005 seconds)
+
+The dark red `S(GIL)` blocks indicate the threads/processes are in a waiting state due to the GIL, dark orange `S` is a due to other reasons (like `time.sleep(...)`). The regular pattern is due to Python switching threads after [`sys.getswitchinterval`](https://docs.python.org/3/library/sys.html#sys.getswitchinterval) (0.005 seconds)
 

per4m/perf2trace.py

@@ -164,9 +164,11 @@ def main(argv=sys.argv):
                     dur = time  - last_sleep_time[pid]
                     if takes_gil(last_sleep_stacktrace[pid]):
                         name = 'S(GIL)'
+                        cname = 'terrible'
                     else:
                         name = 'S'
-                    event = {"pid": parent_pid.get(pid, pid), "tid": pid, "ts": last_sleep_time[pid], "dur": dur, "name": name, "ph": "X", "cat": "process state"}
+                        cname = 'bad'
+                    event = {"pid": parent_pid.get(pid, pid), "tid": pid, "ts": last_sleep_time[pid], "dur": dur, "name": name, "ph": "X", "cat": "process state", 'cname': cname}
                     trace_events.append(event)
                 last_run_time[pid] = time
                 del last_sleep_time[pid]