… objects are now allocated calling calloc() directly instead of using InnoDB heap allocation. This may improve write performance for high levels… if a bitmap file I/O error occurs after an INNODB_CHANGED_PAGES query started returning data to indicate an incomplete result set. Bug fixed #1185040. The INNODB_CHANGED_PAGES table couldn’t be queried if the log…
Post: The small improvements of MySQL 5.6: Duplicate Index Detection
May 31, 2013 By Leave a Comment
… new features that MySQL 5.6 brought: GTID-based replication, InnoDB Fulltext, Memcached integration, a more complete performance schema, online DDL… are engine-dependent, like redundant suffixes for secondary keys in InnoDB. As some of this redundancies could be necessary, depending on…
Comment: Replication in MySQL 5.6: GTIDs benefits and limitations - Part 2
May 30, 2013 By 6 Comments
You are hitting a fundamental (and in my opinion bad) part of the …
Comment: Percona XtraBackup 2.1.3 for MySQL available for download
May 30, 2013 By 3 Comments
… UTC – mysqld got signal 11 ; This could be because you hit a bug. It is also possible that this binary or…
Comment: ZFS on Linux and MySQL
May 28, 2013 By 17 Comments
… before. @Nils, In a way that is true. Imagine running InnoDB over XFS, you will end with two sets of checksums – one that of InnoDB and other of XFS itself. In case of InnoDB, the block size – 16k – is much…
Post: Percona XtraBackup 2.1.3 for MySQL available for download
May 22, 2013 By 3 Comments
… MySQL hot backup software that performs non-blocking backups for InnoDB and XtraDB databases. With Percona XtraBackup, you can achieve the…
Comment: INSERT INTO ... SELECT Performance with Innodb tables.
May 22, 2013 By 22 Comments
… 5.5. Here is the related output from show engine innodb status: —TRANSACTION BB0E42A, ACTIVE 3 sec fetching rows, thread declared inside InnoDB 334 mysql tables in use 4, locked 4 3264 lock…
Comment: How to calculate a good InnoDB log file size
May 22, 2013 By 38 Comments
…* && date && mysql -BNe’show engine innodb status\G’ | grep sequence && sleep 60 && date && mysql -BNe’show engine innodb status\G’ | grep sequence && ls -l…
Comment: Benchmarking Percona Server TokuDB vs InnoDB
May 22, 2013 By 32 Comments
Does Percona have improvements to keep the InnoDB insert buffer from getting full (as in do background reads for ibuf merges when it is getting full)? That is the key to sustaining good throughput for InnoDB on iibench.
Comment: How to calculate a good InnoDB log file size
May 21, 2013 By 38 Comments
…* && date && mysql -BNe’show engine innodb status\G’ | grep sequence && sleep 60 && date && mysql -BNe’show engine innodb status\G’ | grep sequence && ls -l… is far cheaper in modern versions of InnoDB: https://blogs.oracle.com/mysqlinnodb/entry/innodb_recovery_is_now_faster And from the…
