Documentation for JIRA 5.2. Documentation for other versions of JIRA is available too. 
Here are some quick benchmarks to illustrate the performance improvements in JIRA 3.2 vs. 3.1.1.
Return to the 3.2 release notes
Sample JIRA data details
Issues |
14862 |
Comments/changes |
38294 |
Users |
9163 (most inactive) |
Performance comparison
Operation |
3.1.1 |
3.2 |
|---|---|---|
Full reindex |
429s |
287s |
Search |
37s |
1.1s |
Search returning first 25 of 14,862 issues, average over multiple runs.
System
Software: JIRA 3.1.1 Enterprise; all issues cached.
System: 2.6Ghz Pentium 4
Database: MySQL 4.1.9
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