1 files changed, 4 insertions, 2 deletions
diff --git a/synapse/metrics/__init__.py b/synapse/metrics/__init__.py
index ef14bcd840..b29cec3de1 100644
--- a/synapse/metrics/__init__.py
+++ b/synapse/metrics/__init__.py
@@ -154,6 +154,7 @@ tick_time = reactor_metrics.register_distribution("tick_time")
pending_calls_metric = reactor_metrics.register_distribution("pending_calls")
gc_time = reactor_metrics.register_distribution("gc_time", labels=["gen"])
+gc_unreachable = reactor_metrics.register_counter("gc_unreachable", labels=["gen"])
def runUntilCurrentTimer(func):
@@ -186,15 +187,16 @@ def runUntilCurrentTimer(func):
# one if necessary.
threshold = gc.get_threshold()
counts = gc.get_count()
- for i in (0, 1, 2):
+ for i in (2, 1, 0):
if threshold[i] < counts[i]:
logger.info("Collecting gc %d", i)
start = time.time() * 1000
- gc.collect(i)
+ unreachable = gc.collect(i)
end = time.time() * 1000
gc_time.inc_by(end - start, i)
+ gc_unreachable.inc_by(unreachable, i)
return ret
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