[LUCENENET-644] The design and implementation of a better ThreadLocal<T>

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Lucene.Net 3.0.3, Lucene.Net 4.0
• Component/s: Lucene.Net Core
• Labels: perfomance
• Assignee: Shad Storhaug
• Reporter: Shad Storhaug
• Created: 09/Feb/20 18:15
• Updated: 09/Dec/21 18:18
• Resolved: 09/Dec/21 18:18

Description

This issue was first reported in LUCENENET-640.

When using very high number of threads for long periods of time, the garbage collector will cause all threads to block for several seconds. More details here.

There is also a solution being tested, which is blogged about here.

Ideally, we should adapt the fix after it has been thoroughly tested, provided Microsoft doesn't fix the problem with ThreadLocal<T> first.

Issue Links

• Is contained by: LUCENENET-630 Identify/Fix Bottlenecks
• is related to: LUCENENET-640 Sequential IndexWriter performance in concurrent environments.