Improved accuracy of sched_trace measurement parsing.

* Measurements from tasks missing > 20% of their scheduling records are
ignored. This is configurable in config/config.py.
* Measurements which only have zero values are ignored.
* If either of these 2 situations are encountered print out a message the
first time using the common.log_once() method. See parse_exps.py for how
this is used with multiple threads.
* Measurements from a task's last job are ignored.
* Miss ratio is calculated only as a fraction of the number of jobs whose
matching release and completion records were found, not just release.

1 files changed, 4 insertions, 0 deletions

diff --git a/parse/tuple_table.py b/parse/tuple_table.py
index 47fb6b6..320d9dd 100644
--- a/parse/tuple_table.py
+++ b/parse/tuple_table.py
@@ -13,6 +13,10 @@ class TupleTable(object):
     def get_col_map(self):
         return self.col_map
 
+    def __bool__(self):
+        return bool(self.table)
+    __nonzero__ = __bool__
+
     def __getitem__(self, kv):
         key = self.col_map.get_key(kv)
         return self.table[key]