Commit Graph

20 Commits

Author SHA1 Message Date
Erik Johnston
3baf6e1667 Fix ExpiringCache.__len__ to be accurate
It used to try and produce an estimate, which was sometimes negative.
This caused metrics to be sad, so lets always just calculate it from
scratch.

(This appears to have been a longstanding bug, but one which has been made more
of a problem by #3932 and #3933).

(This was originally done by Erik as part of #3933. I'm cherry-picking it
because really it's a fix in its own right)
2018-09-26 12:32:29 +01:00
Erik Johnston
8601c24287 Fix some instances of ExpiringCache not expiring cache items
ExpiringCache required that `start()` be called before it would actually
start expiring entries. A number of places didn't do that.

This PR removes `start` from ExpiringCache, and automatically starts
backround reaping process on creation instead.
2018-09-21 14:19:46 +01:00
Richard van der Hoff
03751a6420 Fix some looping_call calls which were broken in #3604
It turns out that looping_call does check the deferred returned by its
callback, and (at least in the case of client_ips), we were relying on this,
and I broke it in #3604.

Update run_as_background_process to return the deferred, and make sure we
return it to clock.looping_call.
2018-07-26 11:48:08 +01:00
Richard van der Hoff
667fba68f3 Run things as background processes
This fixes #3518, and ensures that we get useful logs and metrics for lots of
things that happen in the background.

(There are certainly more things that happen in the background; these are just
the common ones I've found running a single-process synapse locally).
2018-07-18 20:55:05 +01:00
Amber Brown
49af402019 run isort 2018-07-09 16:09:20 +10:00
Amber Brown
df9f72d9e5 replacing portions 2018-05-21 19:47:37 -05:00
Richard van der Hoff
bc496df192 report metrics on number of cache evictions 2018-02-05 15:34:01 +00:00
Erik Johnston
c72058bcc6 Use an ExpiringCache for storing registration sessions
This is because pruning them was a significant performance drain on
matrix.org
2017-06-29 14:08:37 +01:00
Erik Johnston
3545e17f43 Add setdefault key to ExpiringCache 2017-03-10 10:30:49 +00:00
Erik Johnston
f85b6ca494 Speed up cache size calculation
Instead of calculating the size of the cache repeatedly, which can take
a long time now that it can use a callback, instead cache the size and
update that on insertion and deletion.

This requires changing the cache descriptors to have two caches, one for
pending deferreds and the other for the actual values. There's no reason
to evict from the pending deferreds as they won't take up any more
memory.
2017-01-17 11:18:13 +00:00
Erik Johnston
6d00213e80 Use OrderedDict in ExpiringCache 2017-01-16 15:33:22 +00:00
Erik Johnston
46aebbbcbf Add support for 'iterable' to ExpiringCache 2017-01-16 14:57:23 +00:00
Erik Johnston
73c7112433 Change CacheMetrics to be quicker
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.
2016-06-03 11:26:52 +01:00
Mark Haines
239badea9b Use syntax that works on both py2.7 and py3 2016-03-07 20:13:10 +00:00
Erik Johnston
72165e5b77 Reraise exception 2016-03-01 11:00:10 +00:00
Erik Johnston
ff2d7551c7 Correct cache miss detection 2016-03-01 10:59:17 +00:00
Erik Johnston
278d6c0527 Report size of ExpiringCache 2016-02-23 16:46:21 +00:00
Daniel Wagner-Hall
d83d004ccd Fix flake8 warnings for new flake8 2016-02-02 17:18:50 +00:00
Matthew Hodgson
6c28ac260c copyrights 2016-01-07 04:26:29 +00:00
Erik Johnston
2df8dd9b37 Move all the caches into their own package, synapse.util.caches 2015-08-11 18:00:59 +01:00