Vladimir Ozerov created IGNITE-7866: ---------------------------------------
Summary: TcpCommunicationSpi metrics causes cache operations slowdown Key: IGNITE-7866 URL: https://issues.apache.org/jira/browse/IGNITE-7866 Project: Ignite Issue Type: Task Components: general Affects Versions: 2.4 Reporter: Vladimir Ozerov Assignee: Vladimir Ozerov Fix For: 2.4 Extended TCP metrics were added as a part of IGNITE-6868 ticket. Unfortunately, they causes ~5-10% performance drop for cache operations when working in in-memory mode. Causes: 1) Contention on shared data structures (LongAdder, CMH) 2) A lot of string comparisons because we use class names to track particulat message types Suggested fix: 1) Move all processing to NIO threads 2) Introcduce thread-local state and update it from NIO threads 3) Metrics readers should merge state from all NIO threads 4) User {{Message}} type ID instead of class names 5) When returning final result we should use {{Class.getName()}} instead of {{Class.getSimpleName()}} -- This message was sent by Atlassian JIRA (v7.6.3#76005)