Percona Server 1.0.2-3 Sapporo¶

Percona is glad to announce the release of Percona Server 1.0.2-3 on March 2nd, 2009.

• Move to MySQL 5.1.31
• Fixed #329290: crash in insert/delete load.
• Fixed #324734: fails to build with MySQL using --with-debug
• More safe rw-lock: fix #326445 - XtraDB hangs in 10 threads TPC-C bug
• Scalability fix – replaced page_hash mutex to page_hash, read-write lock
• fixed #317074: InnoDB compression hangs
• Fix broken group commit]] in InnoDB, add new global variable to Improved InnoDB I/O Scalability: enable_unsafe_group_commit
• Scalability fix – ability to use Multiple Rollback Segments
• Fixed #316995: crash when attempt to select from information_schema table
• Fixed #316449 compilation warning
• Fixed #317584: failed assertion
• Fixed #316982: compilation failed with UNIV_DEBUG enabled
• Changed parameter for control read ahead activity in Improved InnoDB I/O Scalability - now it accepts string values
• Fixed compiler warnings on buf_blockt
• Changed parameter name from innodb_ibuf_positive_contract to Improved InnoDB I/O Scalability: innodb_ibuf_active_contract.
• Added parameter to control merging insert buffer to Improved InnoDB I/O Scalability: innodb_ibuf_accel_rate
• Added parameter to control neighbor flushing to Improved InnoDB I/O Scalability: innodb_flush_neighbor_pages
• Added parameters to restrict insert buffer size to Improved InnoDB I/O Scalability: innodb_ibuf_max_size, innodb_ibuf_active_contract
• Stop adaptive_checkpoint flushing when exceeds LOG_POOL_PREFLUSH_RATIO_ASYNC