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Merge pull request #5461 from matrix-org/erikj/histograms_are_cumalitive
Prometheus histograms are cumalative
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commit
9ca4ae7131
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changelog.d/5461.feature
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changelog.d/5461.feature
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Statistics on forward extremities per room are now exposed via Prometheus.
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@ -224,7 +224,6 @@ class BucketCollector(object):
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for i, bound in enumerate(self.buckets):
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if x <= bound:
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buckets[bound] = buckets.get(bound, 0) + data[x]
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break
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for i in self.buckets:
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res.append([str(i), buckets.get(i, 0)])
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@ -228,7 +228,8 @@ class EventsStore(
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self._state_resolution_handler = hs.get_state_resolution_handler()
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# Collect metrics on the number of forward extremities that exist.
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self._current_forward_extremities_amount = {}
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# Counter of number of extremities to count
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self._current_forward_extremities_amount = c_counter()
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BucketCollector(
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"synapse_forward_extremities",
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@ -64,16 +64,16 @@ class ExtremStatisticsTestCase(HomeserverTestCase):
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expected = set([
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b'synapse_forward_extremities_bucket{le="1.0"} 0.0',
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b'synapse_forward_extremities_bucket{le="2.0"} 2.0',
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b'synapse_forward_extremities_bucket{le="3.0"} 0.0',
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b'synapse_forward_extremities_bucket{le="5.0"} 0.0',
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b'synapse_forward_extremities_bucket{le="7.0"} 1.0',
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b'synapse_forward_extremities_bucket{le="10.0"} 0.0',
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b'synapse_forward_extremities_bucket{le="15.0"} 0.0',
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b'synapse_forward_extremities_bucket{le="20.0"} 0.0',
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b'synapse_forward_extremities_bucket{le="50.0"} 0.0',
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b'synapse_forward_extremities_bucket{le="100.0"} 0.0',
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b'synapse_forward_extremities_bucket{le="200.0"} 0.0',
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b'synapse_forward_extremities_bucket{le="500.0"} 0.0',
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b'synapse_forward_extremities_bucket{le="3.0"} 2.0',
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b'synapse_forward_extremities_bucket{le="5.0"} 2.0',
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b'synapse_forward_extremities_bucket{le="7.0"} 3.0',
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b'synapse_forward_extremities_bucket{le="10.0"} 3.0',
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b'synapse_forward_extremities_bucket{le="15.0"} 3.0',
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b'synapse_forward_extremities_bucket{le="20.0"} 3.0',
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b'synapse_forward_extremities_bucket{le="50.0"} 3.0',
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b'synapse_forward_extremities_bucket{le="100.0"} 3.0',
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b'synapse_forward_extremities_bucket{le="200.0"} 3.0',
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b'synapse_forward_extremities_bucket{le="500.0"} 3.0',
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b'synapse_forward_extremities_bucket{le="+Inf"} 3.0',
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b'synapse_forward_extremities_count 3.0',
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b'synapse_forward_extremities_sum 10.0',
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