JRuby - (mostly) some of the concurrency related - changes since 1.7.4

changes.md

1.7.5

Changes

... HUGE release in terms of (compatibility and some performance) fixes

... invokedynamic disabled by default on Java 7 (otherwise -Xcompile.invokedynamics=false)

• sometimes wrong Thread#backtrace
• Thread#backtrace not thread-safe
• Thread#kill deadlock
• issues with require in separate threads
• threading performance regression in 1.9 mode

Celluloid JRuby 1.7.4 has a cross-Fiber resume bug

1.7.6

Changes

• ruby Thread internal concurrency fixes

1.7.7 (yanked)

1.7.8

Changes

1.7.9

Changes

1.7.10

Changes

1.7.11

Changes

• improved object_id concurrency affects Rails (likely ActiveRecord)
• less multi-threaded lock contention due (internal) caching affects Rails
• fibers do not reuse threads only if using Fiber TODO review

1.7.12

Changes

1.7.13

Changes

... has new OpenSSL

1.7.14

Changes

... invokedynamic disabled by default on Java 8 (otherwise -Xcompile.invokedynamics=false)

1.7.15

Changes

... quick follow-up on 1.7.14 due mangled jruby-jars release

1.7.16

Changes

1.7.17

Changes

• heap memory filling up with soft refs (regexp cache) affects Rails

compiled from official change-logs https://github.com/jruby/jruby.github.com/tree/master/www/_posts