Percona is glad to announce the release of Percona Server 5.5.13-20.4 on July 1st, 2011 (Downloads are availablehere and from thePercona Software Repositories).
Based on MySQL 5.5.13, Percona Server Percona Server 5.5.13-20.4 is now the current stable release in the 5.5 series. All of Percona’s software is open-source and free, all the details of the release can be found in the5.5.13-20.4 milestone at Launchpad.
The”SHM” buffer pool patch, which provided the ability to use a shared memory segment for the buffer pool to enable faster server restarts, has been removed. Instead, we recommend using theLRU Dump/Restore patch which provides similar improvements in restart performance.
Replacement is due toSHM buffer pool both being very invasive and not widely used. Improved restart times are better provided by the much saferLRU D/R patch which has the advantage of also persisting across machine restarts.
The configuration variables formy.cnf have been kept for compatibility and warnings will be printed for the deprecated options (innodb_buffer_pool_shm_key andinnodb_buffer_pool_shm_checksum) if used.
Instructions for disabling theSHM buffer pool can be foundhere.
Instructions on setting up LRU dump/restore can be foundhere.
buf_page_get_zip(). Bug Fix:#802348 (Y. Kinoshita).For more information, please see the following links:
Resources
RELATED POSTS
When I compile Percona 5.5 on CentOS5.5, I got the error：query_response_time.cc:180: undefined reference to `__sync_bool_compare_and_swap_4′ . But mysql has no this error. Can you help me out?
Thanks.
Not currently, we’ve just been discussing adding some though.
Your repository server seems pretty slow some times, I’m getting 15.6kB/s from Germany (100mbit/s connection here). Are there any mirrors?