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Age-based flush list flushing for Percona Server
Implement new, age-based flush list flushing heuristics. buf_flush_list() flush list flush algorithm in MySQL 5.6 has the following properties. - Flushing is limited by both the maximum page count (min_n arg) and the desired new oldest oldest_modification in the buffer pool (lsn_limit) arg. Flushing stops when eit...
Replace more of temporary MyISAM tables with MEMORY for Percona Server
With dynamic row format in MEMORY, it is unnecessary to use MyISAM for temporary tables using large VARCHARs or BLOBs. Make the server use MEMORY tables and fix any bugs. Would be great to have run-time switch (global | session) to use old or new engine. If that is too hard - startup option also is fine. Switch is...