From d36b1d849d5d896967ab2ade7c206513e502d94f Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Wed, 20 Jul 2016 16:59:52 +0100 Subject: [PATCH] Don't explode if we have no snapshots yet --- synapse/metrics/metric.py | 3 +++ 1 file changed, 3 insertions(+) diff --git a/synapse/metrics/metric.py b/synapse/metrics/metric.py index d100841a7f..7becbe0491 100644 --- a/synapse/metrics/metric.py +++ b/synapse/metrics/metric.py @@ -180,6 +180,9 @@ class MemoryUsageMetric(object): self.memory_snapshots[:] = self.memory_snapshots[-max_size:] def render(self): + if not self.memory_snapshots: + return [] + max_rss = max(self.memory_snapshots) min_rss = min(self.memory_snapshots) sum_rss = sum(self.memory_snapshots)