diff --git a/synapse/metrics/metric.py b/synapse/metrics/metric.py
index 1e783e5ff4..ff5aa8c0e1 100644
--- a/synapse/metrics/metric.py
+++ b/synapse/metrics/metric.py
@@ -193,7 +193,9 @@ class DistributionMetric(object):
class CacheMetric(object):
- __slots__ = ("name", "cache_name", "hits", "misses", "size_callback")
+ __slots__ = (
+ "name", "cache_name", "hits", "misses", "evicted_size", "size_callback",
+ )
def __init__(self, name, size_callback, cache_name):
self.name = name
@@ -201,6 +203,7 @@ class CacheMetric(object):
self.hits = 0
self.misses = 0
+ self.evicted_size = 0
self.size_callback = size_callback
@@ -210,6 +213,9 @@ class CacheMetric(object):
def inc_misses(self):
self.misses += 1
+ def inc_evictions(self, size=1):
+ self.evicted_size += size
+
def render(self):
size = self.size_callback()
hits = self.hits
@@ -219,6 +225,9 @@ class CacheMetric(object):
"""%s:hits{name="%s"} %d""" % (self.name, self.cache_name, hits),
"""%s:total{name="%s"} %d""" % (self.name, self.cache_name, total),
"""%s:size{name="%s"} %d""" % (self.name, self.cache_name, size),
+ """%s:evicted_size{name="%s"} %d""" % (
+ self.name, self.cache_name, self.evicted_size
+ ),
]
|
