Matthias Boehm created SYSTEMML-2069:
----------------------------------------
Summary: Thread contention on heaver hitter maintenance
Key: SYSTEMML-2069
URL: https://issues.apache.org/jira/browse/SYSTEMML-2069
Project: SystemML
Issue Type: Bug
Reporter: Matthias Boehm
In multi-threaded applications with many small operations, the synchronized
maintenance of heavy hitters can turn into a bottleneck. Example scenarios are
JMLC scoring with multiple JMLC streams per node and local parfor scripts.
All statistics other than the heavy hitters are already using {{LongAdder}}s to
scale under heavy contention. This task aims to make the heavy hitter
contention lock-free, i.e., remove the unnecessary contention.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
