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Merge pull request #5461 from matrix-org/erikj/histograms_are_cumalitive

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Prometheus histograms are cumalative
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Erik Johnston 2019-06-14 18:21:42 +01:00 committed by GitHub
commit 9ca4ae7131
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4 changed files with 13 additions and 12 deletions
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1
changelog.d/5461.feature Normal file
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@ -0,0 +1 @@
Statistics on forward extremities per room are now exposed via Prometheus.

1
synapse/metrics/__init__.py
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@ -224,7 +224,6 @@ class BucketCollector(object):
for i, bound in enumerate(self.buckets):
if x <= bound:
buckets[bound] = buckets.get(bound, 0) + data[x]
break
for i in self.buckets:
res.append([str(i), buckets.get(i, 0)])

3
synapse/storage/events.py
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@ -228,7 +228,8 @@ class EventsStore(
self._state_resolution_handler = hs.get_state_resolution_handler()
# Collect metrics on the number of forward extremities that exist.
self._current_forward_extremities_amount = {}
# Counter of number of extremities to count
self._current_forward_extremities_amount = c_counter()
BucketCollector(
"synapse_forward_extremities",

20
tests/storage/test_event_metrics.py
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@ -64,16 +64,16 @@ class ExtremStatisticsTestCase(HomeserverTestCase):
expected = set([
b'synapse_forward_extremities_bucket{le="1.0"} 0.0',
b'synapse_forward_extremities_bucket{le="2.0"} 2.0',
b'synapse_forward_extremities_bucket{le="3.0"} 0.0',
b'synapse_forward_extremities_bucket{le="5.0"} 0.0',
b'synapse_forward_extremities_bucket{le="7.0"} 1.0',
b'synapse_forward_extremities_bucket{le="10.0"} 0.0',
b'synapse_forward_extremities_bucket{le="15.0"} 0.0',
b'synapse_forward_extremities_bucket{le="20.0"} 0.0',
b'synapse_forward_extremities_bucket{le="50.0"} 0.0',
b'synapse_forward_extremities_bucket{le="100.0"} 0.0',
b'synapse_forward_extremities_bucket{le="200.0"} 0.0',
b'synapse_forward_extremities_bucket{le="500.0"} 0.0',
b'synapse_forward_extremities_bucket{le="3.0"} 2.0',
b'synapse_forward_extremities_bucket{le="5.0"} 2.0',
b'synapse_forward_extremities_bucket{le="7.0"} 3.0',
b'synapse_forward_extremities_bucket{le="10.0"} 3.0',
b'synapse_forward_extremities_bucket{le="15.0"} 3.0',
b'synapse_forward_extremities_bucket{le="20.0"} 3.0',
b'synapse_forward_extremities_bucket{le="50.0"} 3.0',
b'synapse_forward_extremities_bucket{le="100.0"} 3.0',
b'synapse_forward_extremities_bucket{le="200.0"} 3.0',
b'synapse_forward_extremities_bucket{le="500.0"} 3.0',
b'synapse_forward_extremities_bucket{le="+Inf"} 3.0',
b'synapse_forward_extremities_count 3.0',
b'synapse_forward_extremities_sum 10.0',