Commit Graph

34 Commits

Author SHA1 Message Date
Amber Brown
e1728dfcbe
Make scripts/ and scripts-dev/ pass pyflakes (and the rest of the codebase on py3) (#4068) 2018-10-20 11:16:55 +11:00
Erik Johnston
b2aa05a8d6 Use efficient .intersection 2018-07-17 11:07:04 +01:00
Erik Johnston
547b1355d3 Fix perf regression in PR #3530
The get_entities_changed function was changed to return all changed
entities since the given stream position, rather than only those changed
from a given list of entities. This resulted in the function incorrectly
returning large numbers of entities that, for example, caused large
increases in database usage.
2018-07-17 10:27:51 +01:00
Erik Johnston
77b692e65d Don't return unknown entities in get_entities_changed
The stream cache keeps track of all entities that have changed since
a particular stream position, so get_entities_changed does not need to
return unknown entites when given a larger stream position.

This makes it consistent with the behaviour of has_entity_changed.
2018-07-13 15:26:10 +01:00
Richard van der Hoff
fa5c2bc082 Reduce set building in get_entities_changed
This line shows up as about 5% of cpu time on a synchrotron:

    not_known_entities = set(entities) - set(self._entity_to_key)

Presumably the problem here is that _entity_to_key can be largeish, and
building a set for its keys every time this function is called is slow.

Here we rewrite the logic to avoid building so many sets.
2018-07-12 11:37:44 +01:00
Amber Brown
49af402019 run isort 2018-07-09 16:09:20 +10:00
Amber Brown
72d2143ea8
Revert "Revert "Try to not use as much CPU in the StreamChangeCache"" (#3454) 2018-06-28 11:04:18 +01:00
Matthew Hodgson
8057489b26
Revert "Try to not use as much CPU in the StreamChangeCache" 2018-06-26 18:09:01 +01:00
Amber Brown
1202508067 fixes 2018-06-26 17:29:01 +01:00
Amber Brown
bd3d329c88 fixes 2018-06-26 17:28:12 +01:00
Amber Brown
abfe4b2957 try and make loading items from the cache faster 2018-06-26 17:25:34 +01:00
Amber Brown
f7869f8f8b
Port to sortedcontainers (with tests!) (#3332) 2018-06-06 00:13:57 +10:00
Amber Brown
df9f72d9e5 replacing portions 2018-05-21 19:47:37 -05:00
Richard van der Hoff
d3347ad485 Revert "Use sortedcontainers instead of blist"
This reverts commit 9fbe70a7dc.

It turns out that sortedcontainers.SortedDict is not an exact match for
blist.sorteddict; in particular, `popitem()` removes things from the opposite
end of the dict.

This is trivial to fix, but I want to add some unit tests, and potentially some
more thought about it, before we do so.
2018-04-13 11:16:43 +01:00
Vincent Breitmoser
9fbe70a7dc Use sortedcontainers instead of blist
This commit drop-in replaces blist with SortedContainers. They are
written in pure python so work with pypy, but perform as good as
native implementations, at least in a couple benchmarks:

http://www.grantjenks.com/docs/sortedcontainers/performance.html
2018-04-10 11:29:51 +02:00
Erik Johnston
b5e8d529e6 Define CACHE_SIZE_FACTOR once 2017-07-04 09:56:44 +01:00
Erik Johnston
efc2b7db95 Rewrite conditional 2017-06-09 13:35:15 +01:00
Erik Johnston
eed59dcc1e Fix has_any_entity_changed
Occaisonally has_any_entity_changed would throw the error: "Set changed
size during iteration" when taking the max of the `sorteddict`. While
its uncertain how that happens, its quite inefficient to iterate over
the entire dict anyway so we change to using the more traditional
`bisect_*` functions.
2017-06-09 11:44:01 +01:00
Erik Johnston
304880d185 Add stream change cache 2017-05-31 15:46:36 +01:00
Richard van der Hoff
29ed09e80a Fix assertion to stop transaction queue getting wedged
... and update some docstrings to correctly reflect the types being used.

get_new_device_msgs_for_remote can return a long under some circumstances,
which was being stored in last_device_list_stream_id_by_dest, and was then
upsetting things on the next loop.
2017-03-15 12:16:55 +00:00
Erik Johnston
955f34d23e Change get_pos_of_last_change to return upper bound 2016-09-15 15:12:07 +01:00
Erik Johnston
cb3edec6af Use stream_change cache to make get_forward_extremeties_for_room cache more effective 2016-09-15 14:28:13 +01:00
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
Erik Johnston
a547e2df85 Return list, not generator. 2016-03-14 15:30:19 +00:00
Erik Johnston
374f9b2f07 Limit stream change cache size too 2016-03-01 13:30:15 +00:00
Erik Johnston
c77dae7a1a Change the way we figure out presence updates for small deltas 2016-02-23 14:54:40 +00:00
Erik Johnston
e70165039c If stream pos is greater then earliest known key and entity hasn't changed, then entity hasn't changed 2016-01-29 16:41:32 +00:00
Erik Johnston
18579534ea Prefill stream change caches 2016-01-29 14:37:59 +00:00
Erik Johnston
3f5dd18bd4 If the same as the earliest key, assume nothing has changed. 2016-01-28 18:11:41 +00:00
Erik Johnston
40431251cb Correctly update _entity_to_key 2016-01-28 18:05:43 +00:00
Erik Johnston
82cf3a8043 Fix inequalities 2016-01-28 17:44:04 +00:00
Erik Johnston
0663c5bd52 Include cache hits with has_entity_changed 2016-01-28 17:27:28 +00:00
Erik Johnston
45cf827c8f Change name and doc has_entity_changed 2016-01-28 16:39:18 +00:00
Erik Johnston
00cb3eb24b Cache tags and account data 2016-01-28 16:37:41 +00:00