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Sprinkle some CacheCounterMetrics around the synapse.storage layer

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This commit is contained in:
Paul "LeoNerd" Evans 2015-03-04 16:04:46 +00:00
parent ce8b5769f7
commit b0cdf097f4
1 changed files with 15 additions and 1 deletions
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16
synapse/storage/_base.py
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@ -20,6 +20,7 @@ from synapse.events.utils import prune_event
from synapse.util.logutils import log_function
from synapse.util.logcontext import PreserveLoggingContext, LoggingContext
from synapse.util.lrucache import LruCache
import synapse.metrics
from twisted.internet import defer
@ -31,6 +32,8 @@ import time
logger = logging.getLogger(__name__)
metrics = synapse.metrics.get_metrics_for("synapse.storage")
sql_logger = logging.getLogger("synapse.storage.SQL")
transaction_logger = logging.getLogger("synapse.storage.txn")
@ -56,6 +59,8 @@ def cached(max_entries=1000):
def wrap(orig):
cache = OrderedDict()
counter = metrics.register_cachecounter(orig.__name__)
def prefill(key, value):
while len(cache) > max_entries:
cache.popitem(last=False)
@ -65,8 +70,10 @@ def cached(max_entries=1000):
@defer.inlineCallbacks
def wrapped(self, key):
if key in cache:
counter.inc_hits()
defer.returnValue(cache[key])
counter.inc_misses()
ret = yield orig(self, key)
prefill(key, ret)
defer.returnValue(ret)
@ -176,6 +183,9 @@ class SQLBaseStore(object):
self._get_event_counters = PerformanceCounters()
self._get_event_cache = LruCache(hs.config.event_cache_size)
self._get_event_cache_counter = metrics.register_cachecounter(
"get_event"
)
def start_profiling(self):
self._previous_loop_ts = self._clock.time_msec()
@ -644,8 +654,12 @@ class SQLBaseStore(object):
try:
# Separate cache entries for each way to invoke _get_event_txn
return cache[(check_redacted, get_prev_content, allow_rejected)]
ret = cache[(check_redacted, get_prev_content, allow_rejected)]
self._get_event_cache_counter.inc_hits()
return ret
except KeyError:
self._get_event_cache_counter.inc_misses()
pass
finally:
start_time = update_counter("event_cache", start_time)