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authorMatthew Hodgson <matthew@arasphere.net>2018-06-26 18:09:01 +0100
committerGitHub <noreply@github.com>2018-06-26 18:09:01 +0100
commit8057489b260a19cdd36b2f4ac5b587565ca7aac0 (patch)
treebb0b5ca96181a4d70faff568f8db7c0d35d69113
parentMerge pull request #3451 from matrix-org/hawkowl/sorteddict-api (diff)
downloadsynapse-8057489b260a19cdd36b2f4ac5b587565ca7aac0.tar.xz
Revert "Try to not use as much CPU in the StreamChangeCache"
-rw-r--r--changelog.d/3447.misc0
-rw-r--r--synapse/util/caches/stream_change_cache.py6
2 files changed, 2 insertions, 4 deletions
diff --git a/changelog.d/3447.misc b/changelog.d/3447.misc
deleted file mode 100644
index e69de29bb2..0000000000
--- a/changelog.d/3447.misc
+++ /dev/null
diff --git a/synapse/util/caches/stream_change_cache.py b/synapse/util/caches/stream_change_cache.py
index 0fb8620001..817118e30f 100644
--- a/synapse/util/caches/stream_change_cache.py
+++ b/synapse/util/caches/stream_change_cache.py
@@ -78,8 +78,7 @@ class StreamChangeCache(object):
             not_known_entities = set(entities) - set(self._entity_to_key)
 
             result = (
-                {self._cache[k] for k in self._cache.islice(
-                    start=self._cache.bisect_right(stream_pos))}
+                set(self._cache.values()[self._cache.bisect_right(stream_pos) :])
                 .intersection(entities)
                 .union(not_known_entities)
             )
@@ -114,8 +113,7 @@ class StreamChangeCache(object):
         assert type(stream_pos) is int
 
         if stream_pos >= self._earliest_known_stream_pos:
-            return [self._cache[k] for k in self._cache.islice(
-                start=self._cache.bisect_right(stream_pos))]
+            return self._cache.values()[self._cache.bisect_right(stream_pos) :]
         else:
             return None