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Change CacheMetrics to be quicker

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We change it so that each cache has an individual CacheMetric, instead
of having one global CacheMetric. This means that when a cache tries to
increment a counter it does not need to go through so many indirections.
This commit is contained in:
Erik Johnston 2016-06-02 11:29:44 +01:00
parent 065e739d6e
commit 73c7112433
8 changed files with 82 additions and 70 deletions
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20
synapse/util/caches/__init__.py
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@ -24,11 +24,21 @@ DEBUG_CACHES = False
metrics = synapse.metrics.get_metrics_for("synapse.util.caches")
caches_by_name = {}
cache_counter = metrics.register_cache(
"cache",
lambda: {(name,): len(caches_by_name[name]) for name in caches_by_name.keys()},
labels=["name"],
)
# cache_counter = metrics.register_cache(
# "cache",
# lambda: {(name,): len(caches_by_name[name]) for name in caches_by_name.keys()},
# labels=["name"],
# )
def register_cache(name, cache):
caches_by_name[name] = cache
return metrics.register_cache(
"cache",
lambda: len(cache),
name,
)
_string_cache = LruCache(int(5000 * CACHE_SIZE_FACTOR))
caches_by_name["string_cache"] = _string_cache