[LOG4J2-852] [Perf] Use FastDateFormat to format %d timestamps

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 2.1
• Fix Version/s: 2.2
• Component/s: Core, Layouts, Pattern Converters
• Assignee: Unassigned
• Reporter: Remko Popma
• Created: 22/Sep/14 17:07
• Updated: 24/Sep/14 02:19
• Resolved: 24/Sep/14 02:18

Description

It was suggested on the mailing list to use commons lang FastDateFormat to format log timestamps.

This ticket is to track the work to

• investigate the performance benefit of this change
• make the change if the benefit is significant

Issue Links

• duplicates: LOG4J2-812 Performance optimization: avoid use of synchronized SimpleDateFormat in Dat​ePatternCo​nverter