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Track why we're evicting from caches (#10829)

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So we can see distinguish between "evicting because the cache is too big" and "evicting because the cache entries haven't been recently used".
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David Robertson 2021-09-22 10:59:52 +01:00 • committed by GitHub
parent 51e2db3598
commit a2d7195e01
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4 changed files with 31 additions and 15 deletions
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synapse/util/caches/lrucache.py
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@ -40,7 +40,7 @@ from twisted.internet.interfaces import IReactorTime
from synapse.config import cache as cache_config
from synapse.metrics.background_process_metrics import wrap_as_background_process
from synapse.util import Clock, caches
from synapse.util.caches import CacheMetric, register_cache
from synapse.util.caches import CacheMetric, EvictionReason, register_cache
from synapse.util.caches.treecache import TreeCache, iterate_tree_cache_entry
from synapse.util.linked_list import ListNode
@ -403,7 +403,7 @@ class LruCache(Generic[KT, VT]):
evicted_len = delete_node(node)
cache.pop(node.key, None)
if metrics:
metrics.inc_evictions(evicted_len)
metrics.inc_evictions(EvictionReason.size, evicted_len)
def synchronized(f: FT) -> FT:
@wraps(f)