… is INNODB_TABLE_STATS INNODB_INDEX_STATS These table show statistics about InnoDB tables ( taken from InnoDB data dictionary). INNODB_TABLE_STATS is | table_name | table name in InnoDB internal… done | INNODB_INDEX_STATS is | table_name | table name in InnoDB internal style (‘database/table’) | | index_name | index name | | fields | How many fields the index key has…
Post: How well does your table fits in innodb buffer pool ?
December 9, 2010 By 11 Comments
… innodb_sys_tables ON table_id = innodb_sys_tables.id JOIN innodb_index_stats ON innodb_index_stats.table_name = innodb_sys_tables.name AND innodb_sys_indexes.name = innodb_index_stats.index_name AND innodb_index_stats.table_schema = innodb_sys_tables…
Post: ANALYZE: MyISAM vs Innodb
September 3, 2008 By 9 Comments
… to see how accurate stats we can get for for Index Stats created by ANALYZE TABLE for MyISAM and Innodb. But before we go… the stats accuracy along running ANALYZE TABLE after initial table population and when there are significant changes makes sense. For Innodb as index stats… to this Innodb stats are less accurate by nature which means you can allow more data change while your index stats remain as good…
Comment: How well does your table fits in innodb buffer pool ?
December 9, 2010 By 11 Comments
… ON innodb_sys_indexes.table_id = innodb_sys_tables.table_id JOIN innodb_index_stats ON innodb_index_stats.table_name = innodb_sys_tables.name AND innodb_sys_indexes.name = innodb_index_stats.index_name AND innodb_index_stats.table_schema = innodb…
Post: Percona Server 5.5.8 Beta Release
February 16, 2011 By 16 Comments
… innodb_ibuf_active_contract was renamed to innodb_ibuf_active_merge. Bug fixed: #695906 (Yasufumi Kinoshita) Old variable enable_query_response_time_stats… table INNODB_INDEX_STATS were renamed. Bug fixed: #691777. (Yasufumi Kinoshita) The XtraDB version was set to 20.0. (Aleksandr Kuzminsky) Many InnoDB compilation…
Post: MySQL Users Conference - Innodb
May 9, 2007 By 6 Comments
… size for Innodb table, while data pages and pages for different indexes may well have very different compression ratio. As Innodb indexes are not prefix compressed they have very good compression potential. I also would like to see some stats about compressed…
Post: Shard-Query EC2 images available
May 11, 2011 By 2 Comments
… I used the du utility: InnoDB file size on disk: 42GB (with indexes) # du -sh * 203M ibdata1 …innodb-recovery-stats innodb-recovery-update-relay-log innodb-replication-delay=# innodb-rollback-on-timeout innodb-rollback-segments=16 innodb-stats-auto-update=0 innodb-stats-on-metadata=0 innodb-stats…
Post: Statistics of InnoDB tables and indexes available in xtrabackup
September 14, 2009 By 6 Comments
… feature to address this is in XtraDB/InnoDB plugin – fast index creation. With this feature, InnoDB creates indexes by sort, so page fill factor should be quite good. To check that, there is xtrabackup –stats for index domain…
Post: MyISAM Scalability and Innodb, Falcon Benchmarks
October 12, 2007 By 10 Comments
… with stat=1, and t2 contains 4000 records, all with val=5 and different t1_id. It is surely not smart index… we proposed in this case was converting table t1 into InnoDB, and results: Threads Queries/sec 1 296 2 341 4… on system with 4 Cores. Here is comparison of MyISAM Innodb and Falcon results in the graphical form: I’ve created…
Post: InnoDB: look after fragmentation
November 5, 2009 By 12 Comments
…+——————————+——-+ | Innodb_scan_pages_contiguous | 37864 | | Innodb_scan_pages_jumpy | 574 | +——————————+——-+ 2 rows in set (0.00 sec) and extended stats:…tough it is possible in XtraDB / InnoDB-plugin with FAST INDEX creation) so be careful with queries…
