Percona Server 5.6 的首个 GA 版本发布了，版本号是 5.6.13-61.0 ，该版本基于 MySQL 5.6.13

改进内容包括：

New Features:

• Percona Server has implemented a number of XtraDB Performance Improvements for high-concurrency scenarios.
• Percona Server has implemented a number of performance improvements for Page cleaner thread tuning. This feature fixes the upstream bugs: #69170 (#1231918), #70453 (#1232101) and #68481 (#1232406).
• ALL_O_DIRECT method for innodb_flush_method has been ported from Percona Server 5.5.
• Statement Timeout feature has been ported from the Twitter branch.
• Percona Server has extended the SELECT INTO ... OUTFILE and SELECT INTO DUMPFILE to add the support for UNIX sockets and named pipes.

Bugs Fixed:

• Due to an incompatible upstream change that went unnoticed, the page cleaner thread would attempt to replay any file operations it encountered. In most cases this were a no-op, but there were race conditions for certain DDL operations that would have resulted in server crash. Bug fixed #1217002.
• apt-get upgrade of Percona Server would fail in post-installation step if server failed to start. Bug fixed #1002500.
• Percona Server 5.6 now ships with memcached plugins. Bug fixed #1159621.
• Fixed the libssl.so.6 dependency issues in binary tarballs releases. Bug fixed #1172916.
• Error in install_layout.cmake could cause that some library files, during the build, end up in different directories on x86_64 environment. Bug fixed #1174300.
• Server would crash if empty string was passed to AES_ENCRYPT when older OpenSSL version was used. Upstream bug fixed #70489, bug fixed #1201033.
• Kill Idle Transactions feature didn’t work correctly if Thread Pool was enabled. Bug fixed #1201440.
• Percona Server 5.6.12-60.4 would crash if server was started with Thread Pool feature enabled. Bugs fixed #1201681, #1194097 and #1201442.
• Memory leak was introduced by the fix for bug #1132194. Bug fixed #1204873.
• A server could have crashed under a heavy I/O-bound workload involving compressed InnoDB tables. Bug fixed #1224432.
• A potential deadlock, involving DDL, SELECT, SHOW ENGINE INNODB STATUS, and KILL, has been fixed. Fixed the upstream bug #60682, bug fixed #1115048.
• A memory leak in Utility user feature has been fixed. Bug fixed #1166638.
• A server could crash due to a race condition between a INNODB_CHANGED_PAGES query and bitmap file delete by PURGE CHANGED_PAGE_BITMAP or directly on the file system. Bug fixed #1191580.
• Percona Server could not be built with Thread Pool feature and -DWITH_PERFSCHEMA_ENGINE=OFF option. Bug fixed #1196383.
• Page cleaner should perform LRU flushing regardless of server activity. Fixed the upstream bug #70500, bug fixed #1234562.
• Fixed the upstream bug #64556 which could cause an unrelated warning to be raised if a query inside InnoDB was interrupted. Bug fixed #1115158.

Other bugs fixed: bug fixed #1131949, bug fixed #1191589, bug fixed #1229583, upstream bug fixed #70490 bug fixed #1205196,upstream bug fixed #70417 bug fixed #1230220.