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authorMatthew Hodgson <matthew@arasphere.net>2018-06-26 17:49:55 +0100
committerGitHub <noreply@github.com>2018-06-26 17:49:55 +0100
commitd91efb06cfd2b2c9ce37f364c4ff1d349b81707b (patch)
treed3a43daf7d0216050278fad2149127fc890ebcc3 /synapse
parentMerge pull request #3449 from matrix-org/dbkr/fix_deactivate_account_multiple... (diff)
parentfixes (diff)
downloadsynapse-d91efb06cfd2b2c9ce37f364c4ff1d349b81707b.tar.xz
Merge pull request #3451 from matrix-org/hawkowl/sorteddict-api
Try to not use as much CPU in the cache
Diffstat (limited to 'synapse')
-rw-r--r--synapse/util/caches/stream_change_cache.py6
1 files changed, 4 insertions, 2 deletions
diff --git a/synapse/util/caches/stream_change_cache.py b/synapse/util/caches/stream_change_cache.py
index 817118e30f..0fb8620001 100644
--- a/synapse/util/caches/stream_change_cache.py
+++ b/synapse/util/caches/stream_change_cache.py
@@ -78,7 +78,8 @@ class StreamChangeCache(object):
             not_known_entities = set(entities) - set(self._entity_to_key)
 
             result = (
-                set(self._cache.values()[self._cache.bisect_right(stream_pos) :])
+                {self._cache[k] for k in self._cache.islice(
+                    start=self._cache.bisect_right(stream_pos))}
                 .intersection(entities)
                 .union(not_known_entities)
             )
@@ -113,7 +114,8 @@ class StreamChangeCache(object):
         assert type(stream_pos) is int
 
         if stream_pos >= self._earliest_known_stream_pos:
-            return self._cache.values()[self._cache.bisect_right(stream_pos) :]
+            return [self._cache[k] for k in self._cache.islice(
+                start=self._cache.bisect_right(stream_pos))]
         else:
             return None