Merge branch 'develop' into application-services

2 files changed, 70 insertions, 3 deletions

diff --git a/synapse/storage/_base.py b/synapse/storage/_base.py
index 310ee0104c..3e1ab0a159 100644
--- a/synapse/storage/_base.py
+++ b/synapse/storage/_base.py
@@ -77,6 +77,43 @@ class LoggingTransaction(object):
             sql_logger.debug("[SQL time] {%s} %f", self.name, end - start)
 
 
+class PerformanceCounters(object):
+    def __init__(self):
+        self.current_counters = {}
+        self.previous_counters = {}
+
+    def update(self, key, start_time, end_time=None):
+        if end_time is None:
+            end_time = time.time() * 1000
+        duration = end_time - start_time
+        count, cum_time = self.current_counters.get(key, (0, 0))
+        count += 1
+        cum_time += duration
+        self.current_counters[key] = (count, cum_time)
+        return end_time
+
+    def interval(self, interval_duration, limit=3):
+        counters = []
+        for name, (count, cum_time) in self.current_counters.items():
+            prev_count, prev_time = self.previous_counters.get(name, (0, 0))
+            counters.append((
+                (cum_time - prev_time) / interval_duration,
+                count - prev_count,
+                name
+            ))
+
+        self.previous_counters = dict(self.current_counters)
+
+        counters.sort(reverse=True)
+
+        top_n_counters = ", ".join(
+            "%s(%d): %.3f%%" % (name, count, 100 * ratio)
+            for ratio, count, name in counters[:limit]
+        )
+
+        return top_n_counters
+
+
 class SQLBaseStore(object):
     _TXN_ID = 0
 
@@ -88,6 +125,8 @@ class SQLBaseStore(object):
         self._previous_txn_total_time = 0
         self._current_txn_total_time = 0
         self._previous_loop_ts = 0
+        self._txn_perf_counters = PerformanceCounters()
+        self._get_event_counters = PerformanceCounters()
 
     def start_profiling(self):
         self._previous_loop_ts = self._clock.time_msec()
@@ -103,7 +142,18 @@ class SQLBaseStore(object):
 
             ratio = (curr - prev)/(time_now - time_then)
 
-            logger.info("Total database time: %.3f%%", ratio * 100)
+            top_three_counters = self._txn_perf_counters.interval(
+                time_now - time_then, limit=3
+            )
+
+            top_3_event_counters = self._get_event_counters.interval(
+                time_now - time_then, limit=3
+            )
+
+            logger.info(
+                "Total database time: %.3f%% {%s} {%s}",
+                ratio * 100, top_three_counters, top_3_event_counters
+            )
 
         self._clock.looping_call(loop, 10000)
 
@@ -116,7 +166,7 @@ class SQLBaseStore(object):
             with LoggingContext("runInteraction") as context:
                 current_context.copy_to(context)
                 start = time.time() * 1000
-                txn_id = SQLBaseStore._TXN_ID
+                txn_id = self._TXN_ID
 
                 # We don't really need these to be unique, so lets stop it from
                 # growing really large.
@@ -138,6 +188,7 @@ class SQLBaseStore(object):
                     )
 
                     self._current_txn_total_time += end - start
+                    self._txn_perf_counters.update(desc, start, end)
 
         with PreserveLoggingContext():
             result = yield self._db_pool.runInteraction(
@@ -537,6 +588,8 @@ class SQLBaseStore(object):
             "LIMIT 1 "
         )
 
+        start_time = time.time() * 1000
+
         txn.execute(sql, (event_id,))
 
         res = txn.fetchone()
@@ -546,6 +599,8 @@ class SQLBaseStore(object):
 
         internal_metadata, js, redacted, rejected_reason = res
 
+        self._get_event_counters.update("select_event", start_time)
+
         if allow_rejected or not rejected_reason:
             return self._get_event_from_row_txn(
                 txn, internal_metadata, js, redacted,
@@ -557,10 +612,18 @@ class SQLBaseStore(object):
 
     def _get_event_from_row_txn(self, txn, internal_metadata, js, redacted,
                                 check_redacted=True, get_prev_content=False):
+
+        start_time = time.time() * 1000
+        update_counter = self._get_event_counters.update
+
         d = json.loads(js)
+        start_time = update_counter("decode_json", start_time)
+
         internal_metadata = json.loads(internal_metadata)
+        start_time = update_counter("decode_internal", start_time)
 
         ev = FrozenEvent(d, internal_metadata_dict=internal_metadata)
+        start_time = update_counter("build_frozen_event", start_time)
 
         if check_redacted and redacted:
             ev = prune_event(ev)
@@ -576,6 +639,7 @@ class SQLBaseStore(object):
 
             if because:
                 ev.unsigned["redacted_because"] = because
+            start_time = update_counter("redact_event", start_time)
 
         if get_prev_content and "replaces_state" in ev.unsigned:
             prev = self._get_event_txn(
@@ -585,6 +649,7 @@ class SQLBaseStore(object):
             )
             if prev:
                 ev.unsigned["prev_content"] = prev.get_dict()["content"]
+            start_time = update_counter("get_prev_content", start_time)
 
         return ev
 
diff --git a/synapse/storage/push_rule.py b/synapse/storage/push_rule.py
index 30e23445d9..620de71398 100644
--- a/synapse/storage/push_rule.py
+++ b/synapse/storage/push_rule.py
@@ -91,7 +91,9 @@ class PushRuleStore(SQLBaseStore):
         txn.execute(sql, (user_name, relative_to_rule))
         res = txn.fetchall()
         if not res:
-            raise RuleNotFoundException("before/after rule not found: %s" % (relative_to_rule))
+            raise RuleNotFoundException(
+                "before/after rule not found: %s" % (relative_to_rule,)
+            )
         priority_class, base_rule_priority = res[0]
 
         if 'priority_class' in kwargs and kwargs['priority_class'] != priority_class: