[ARTEMIS-1977] ASYNCIO can reduce sys-calls to retrieve I/O events

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.6.2
• Fix Version/s: native-1.0.0, 2.7.0
• Component/s: ActiveMQ-Artemis-Native
• Assignee: Francesco Nigro
• Reporter: Francesco Nigro
• Created: 11/Jul/18 08:56
• Updated: 21/Jun/21 10:06
• Resolved: 06/Mar/19 15:28

Description

On LibAIO is possible to retrieve the I/O completion events without 

using io_getevents sys-calls by reading the user-space ring buffer used by the

kernel to store them.

This is already beneficial for very fast disks and necessary for further improvements

of ASYNCIO Journal to leverage (very) fast low-latency disks by going completly

lock-free. 

 

 

Issue Links

• relates to: ARTEMIS-3361 ASYNCIO blocked poll can spin wait I/O completion
• links to: GitHub Pull Request #1
• links to: GitHub Pull Request #2178
• links to: GitHub Pull Request #2523
• links to: GitHub Pull Request #2570