From 80a167b1f032ae9bcb75bdb20c2112a779dda516 Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Thu, 21 May 2015 11:18:22 +0100 Subject: [PATCH] Add comments --- synapse/storage/events.py | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/synapse/storage/events.py b/synapse/storage/events.py index 656e57b5c6..3d798f5fa2 100644 --- a/synapse/storage/events.py +++ b/synapse/storage/events.py @@ -35,6 +35,16 @@ import simplejson as json logger = logging.getLogger(__name__) +# These values are used in the `enqueus_event` and `_do_fetch` methods to +# control how we batch/bulk fetch events from the database. +# The values are plucked out of thing air to make initial sync run faster +# on jki.re +# TODO: Make these configurable. +EVENT_QUEUE_THREADS = 3 # Max number of threads that will fetch events +EVENT_QUEUE_ITERATIONS = 3 # No. times we block waiting for events +EVENT_QUEUE_TIMEOUT_S = 0.1 # Timeout when waiting for events + + class EventsStore(SQLBaseStore): @defer.inlineCallbacks @log_function @@ -518,11 +528,12 @@ class EventsStore(SQLBaseStore): self._event_fetch_list = [] if not event_list: - if self.database_engine.single_threaded or i > 3: + single_threaded = self.database_engine.single_threaded + if single_threaded or i > EVENT_QUEUE_ITERATIONS: self._event_fetch_ongoing -= 1 return else: - self._event_fetch_lock.wait(0.1) + self._event_fetch_lock.wait(EVENT_QUEUE_TIMEOUT_S) i += 1 continue i = 0 @@ -584,7 +595,7 @@ class EventsStore(SQLBaseStore): self._event_fetch_lock.notify() - if self._event_fetch_ongoing < 3: + if self._event_fetch_ongoing < EVENT_QUEUE_THREADS: self._event_fetch_ongoing += 1 should_start = True else: