[IGNITE-22558] Optimize sending to yourself in DefaultMessagingService

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0
• Labels: ignite-3 ignite3_performance
• Epic Link: AI3 Performance
• Assignee: Kirill Tkalenko
• Reporter: Kirill Tkalenko
• Reviewer: Ivan Bessonov
• Created: 24/Jun/24 07:19
• Updated: 04/Sep/24 16:08
• Resolved: 24/Jun/24 13:50

Description

As a result of studying the flamegraphs, it was discovered that when sending messages to yourself there are non-optimal sections of code:

1. Initializing java.net.InetSocketAddress spends a lot of time for org.apache.ignite.internal.network.DefaultMessagingService#isSelf.
2. Iterating through handlers in org.apache.ignite.internal.network.DefaultMessagingService#sendToSelf creates an unnecessary iterator.

It would also be good to optimize the obviously non-optimal places:

• org.apache.ignite.internal.network.serialization.PerSessionSerializationService#createClassDescriptorsMessages

Issue Links

• is caused by: IGNITE-22542 Synchronous message handling on local node
• links to: GitHub Pull Request #3974