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Reduce memory usage of state group cache (#13323)

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Erik Johnston 2022-07-19 14:40:37 +01:00 committed by GitHub
parent 1efe6b8c41
commit de70b25e84
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2 changed files with 3 additions and 1 deletions
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1
changelog.d/13323.misc Normal file
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@ -0,0 +1 @@
Reduce memory usage of state caches.

3
synapse/storage/databases/state/bg_updates.py
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@ -24,6 +24,7 @@ from synapse.storage.database import (
from synapse.storage.engines import PostgresEngine from synapse.storage.engines import PostgresEngine
from synapse.storage.state import StateFilter from synapse.storage.state import StateFilter
from synapse.types import MutableStateMap, StateMap from synapse.types import MutableStateMap, StateMap
from synapse.util.caches import intern_string
if TYPE_CHECKING: if TYPE_CHECKING:
from synapse.server import HomeServer from synapse.server import HomeServer
@ -136,7 +137,7 @@ class StateGroupBackgroundUpdateStore(SQLBaseStore):
txn.execute(sql % (where_clause,), args) txn.execute(sql % (where_clause,), args)
for row in txn: for row in txn:
typ, state_key, event_id = row typ, state_key, event_id = row
key = (typ, state_key) key = (intern_string(typ), intern_string(state_key))
results[group][key] = event_id results[group][key] = event_id
else: else:
max_entries_returned = state_filter.max_entries_returned() max_entries_returned = state_filter.max_entries_returned()