[IGNITE-3060] Discovery: optimize resource usage for client connections

• Type: Task
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 1.8
• Component/s: general
• Labels: community important performance
• Assignee: Unassigned
• Reporter: Semen Boikov
• Created: 27/Apr/16 08:49
• Updated: 19/Aug/16 10:49
• Resolved: 19/Aug/16 10:49

Description

Tried to run single server + 300 clients nodes, identified some issues which can be easily fixed:

• default size of messages history which is used to support graceful clients reconenct is too large (10 * 1024)
• now there is queue per client connection, when message is sent to clients copy is created for each queue, only one copy can be created
• each client message worker has buffered output stream, now buffer size if pretty large, actually looks like this buffered output stream is not really needed