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Reduce upper limit on blocks fetched at once

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Testnet is lumpy and 2500 can blow up memory
This commit is contained in:
Neil Booth 2017-02-18 13:17:51 +09:00
parent 3f35bc0298
commit 790755b630
1 changed files with 3 additions and 2 deletions
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5
server/block_processor.py
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@ -87,10 +87,11 @@ class Prefetcher(LoggedClass):
with await self.semaphore: with await self.semaphore:
while self.cache_size < self.min_cache_size: while self.cache_size < self.min_cache_size:
# Try and catch up all blocks but limit to room in cache. # Try and catch up all blocks but limit to room in cache.
# Constrain fetch count to between 0 and 2500 regardless. # Constrain fetch count to between 0 and 500 regardless;
# testnet can be lumpy.
cache_room = self.min_cache_size // self.ave_size cache_room = self.min_cache_size // self.ave_size
count = min(daemon_height - self.fetched_height, cache_room) count = min(daemon_height - self.fetched_height, cache_room)
count = min(2500, max(count, 0)) count = min(500, max(count, 0))
if not count: if not count:
if not self.caught_up: if not self.caught_up:
self.caught_up = True self.caught_up = True