November 24, 2014

Percona Server 5.1.51-rel11.5

Percona Community, Percona Server version 5.1.51-rel11.5 is now available for download. The main purpose of this release is to update the current Percona stable release to the latest version of MySQL 5.1. Functionality Added or Changed  Percona Server 5.1.51-rel11.5 is now based on MySQL 5.1.51.  New Features Added: None  Other Changes: None Bugs Fixed  Bug […]

Percona Server with XtraDB Case Study, Behind the Scenes

We’ve published our first case study. The customer, ideeli, had a database that was struggling on standard MySQL and InnoDB. The big win was the upgrade to XtraDB. The business continued to grow quickly, and months later under much more traffic, the database is still outperforming their previous version. I thought I’d write a few […]

Percona Server 5.1.50-rel12.1

Dear Community, Percona Server version 5.1.50-rel12.1 RC is now available for download. Functionality Added or Changed Percona Server 5.1.50-rel12.1 is now based on MySQL 5.1.50. New Features Added: innodb_lru_dump_restore – Implemented automatic dumping of the buffer pool at specified intervals. innodb_buffer_pool_shm – Implemented option ”innodb_buffer_pool_shm_checksum”; when enabled, shared memory buffer pool is checksum validated. This […]

Percona White Paper: Architecting SaaS Applications with XtraDB

Vadim and I have just published a new technical white paper. It shows how Percona Server with XtraDB can make large-scale multi-tenant databases easier to build with MySQL. Our experiences working with SaaS and shared-hosting companies influenced the features we included in Percona Server and XtraDB, and I think this is the best explanation of […]

Percona Server 5.1.50-rel11.4

Dear Community, Percona Server version 5.1.50-rel11.4 is now available for download. The changes in this release include: New features The primary purpose of this release is to update to the latest version of MySQL 5.1. Percona Server 5.1.50-rel11.4 is now based on MySQL 5.1.50. Fixed bugs innodb_use_sys_stats_table – The

table is now used only […]

Percona Server 5.1.49-rel11.3

Dear Community, Percona Server version 5.1.49-rel11.3 is now available for download. The changes in this release include: New features Percona Server 5.1.49-rel11.3 is based on MySQL 5.1.49. A new variable was introduced: innodb_use_sys_stats_table. If ON, the table’s statistics are stored statically in the internal table SYS_STATS. The table is populated with the ANALYZE TABLE command. […]

Percona Server 5.1.47-rel11.0

Dear Community, Percona Server version 5.1.47-rel11.0 is available for download now. The changes in this release include: New features Percona Server is now based on MySQL 5.1.47, and XtraDB is now based on InnoDB plugin 1.0.8. XtraDB now uses the fast recovery code released in InnoDB Plugin version 1.0.8, instead of Percona’s earlier fast-recovery code. […]

Purge Thread Spiral of Death

I just wrote a large post on reasons for innodb main tablespace excessive growth and I thought it would make sense to explain briefly of why it is so frequently you have purge not being the problem at all and when out of no where you can see purge thread being unable to keep up […]

FlashCache: tpcc workload

This is my last post in series on FlashCache testing when the cache is placed on Intel SSD card. This time I am using tpcc-like workload with 1000 Warehouses ( that gives 100GB of data) on Dell PowerEdge R900 with 32GB of RAM, 22GB allocated for buffer pool and I put 70GB on FlashCache partition […]

XtraDB / InnoDB internals in drawing

I did some drawing exercise and put XtraDB / InnoDB internals in Visio diagram: The XtraDB differences and main parameters are marked out. PDF version is there http://www.percona.com/docs/wiki/percona-xtradb:internals:start.