[IGNITE-12491] Eliminate contention on ConcurrentHashMap.size()

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.9, 2.8.1
• Assignee: Ivan Bessonov
• Reporter: Ivan Bessonov
• Created: 24/Dec/19 09:17
• Updated: 06/Aug/21 14:42
• Resolved: 30/Dec/19 15:18

Description

Methods who invoked checkpointReadLock/checkpointReadUnlock spend much time on calculation of quantity dirty pages. You will to see that when have some hundreds of regions.
Any persistent operation will be cost hundreds invokes of size on ConcurrentHashMap.

Issue Links

• links to: GitHub Pull Request #7190
• links to: TC All