From bc496df192fa20dee933590d5f21a3425388c0d7 Mon Sep 17 00:00:00 2001 From: Richard van der Hoff Date: Thu, 1 Feb 2018 17:57:51 +0000 Subject: report metrics on number of cache evictions --- synapse/util/caches/descriptors.py | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'synapse/util/caches/descriptors.py') diff --git a/synapse/util/caches/descriptors.py b/synapse/util/caches/descriptors.py index af65bfe7b8..bf3a66eae4 100644 --- a/synapse/util/caches/descriptors.py +++ b/synapse/util/caches/descriptors.py @@ -75,6 +75,7 @@ class Cache(object): self.cache = LruCache( max_size=max_entries, keylen=keylen, cache_type=cache_type, size_callback=(lambda d: len(d)) if iterable else None, + evicted_callback=self._on_evicted, ) self.name = name @@ -83,6 +84,9 @@ class Cache(object): self.thread = None self.metrics = register_cache(name, self.cache) + def _on_evicted(self, evicted_count): + self.metrics.inc_evictions(evicted_count) + def check_thread(self): expected_thread = self.thread if expected_thread is None: -- cgit 1.5.1