[DISPATCH-1389] Optimize the parsing of message annotations

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.9.0
• Assignee: Ken Giusti
• Reporter: Ken Giusti
• Created: 19/Jul/19 18:18
• Updated: 18/Nov/19 13:54
• Resolved: 18/Nov/19 13:49

Description

Parsing message annotations, especially on the inter router incoming link, are quite expensive.

For example, in a simple standalone router test the time it takes on average (on my puny laptop) to receive a message and hand it off to the core is ~1 usec:

TestRouterA: link MyReceiver count=500000 rx=1.094

Compare that time to the same operation performed on the inbound router link on a two-hop router configuration:

TestRouterB: link MyReceiver count=500000 rx=7.035

On average it's 7x slower.  Most of this time appears to be spent manipulating inbound message annotations.

 

This Jira tracks work towards improving the performance of message annotation processing.

Issue Links

• relates to: DISPATCH-1487 Improve the parsing of message annotations
• supercedes: DISPATCH-1256 Throughput gets worse as more routers are added
• links to: GitHub Pull Request #541
• links to: GitHub Pull Request #542
• links to: GitHub Pull Request #544
• links to: GitHub Pull Request #546