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Sprinkle some CacheCounterMetrics around the synapse.storage layer
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@ -20,6 +20,7 @@ from synapse.events.utils import prune_event
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from synapse.util.logutils import log_function
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from synapse.util.logcontext import PreserveLoggingContext, LoggingContext
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from synapse.util.lrucache import LruCache
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import synapse.metrics
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from twisted.internet import defer
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@ -31,6 +32,8 @@ import time
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logger = logging.getLogger(__name__)
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metrics = synapse.metrics.get_metrics_for("synapse.storage")
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sql_logger = logging.getLogger("synapse.storage.SQL")
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transaction_logger = logging.getLogger("synapse.storage.txn")
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@ -56,6 +59,8 @@ def cached(max_entries=1000):
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def wrap(orig):
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cache = OrderedDict()
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counter = metrics.register_cachecounter(orig.__name__)
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def prefill(key, value):
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while len(cache) > max_entries:
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cache.popitem(last=False)
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@ -65,8 +70,10 @@ def cached(max_entries=1000):
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@defer.inlineCallbacks
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def wrapped(self, key):
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if key in cache:
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counter.inc_hits()
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defer.returnValue(cache[key])
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counter.inc_misses()
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ret = yield orig(self, key)
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prefill(key, ret)
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defer.returnValue(ret)
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@ -176,6 +183,9 @@ class SQLBaseStore(object):
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self._get_event_counters = PerformanceCounters()
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self._get_event_cache = LruCache(hs.config.event_cache_size)
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self._get_event_cache_counter = metrics.register_cachecounter(
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"get_event"
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)
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def start_profiling(self):
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self._previous_loop_ts = self._clock.time_msec()
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@ -644,8 +654,12 @@ class SQLBaseStore(object):
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try:
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# Separate cache entries for each way to invoke _get_event_txn
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return cache[(check_redacted, get_prev_content, allow_rejected)]
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ret = cache[(check_redacted, get_prev_content, allow_rejected)]
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self._get_event_cache_counter.inc_hits()
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return ret
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except KeyError:
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self._get_event_cache_counter.inc_misses()
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pass
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finally:
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start_time = update_counter("event_cache", start_time)
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