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DBAs’ Inconceivable Tales: Mystery of the Freezing MariaDB Database
by Gordan BobicHow our MariaDB / MySQL Support engineers resolved a mysterious problem of MariaDB freezing every few hours for no apparent reason.
SSM 8.8.1.17.5.3 Released
by Gordan BobicNew Shattered Silicon Monitoring (SSM) 8.8.1.17.5.3 release is now available with additional features and fixes
MySQL Parallel Replication Pitfalls: Group Commit Sync Delay
by Gordan BobicMySQL parallel replication is a useful feature, but there are some pitfalls to watch out for. Getting it wrong can cripple performance.
MariaDB / MySQL Performance Tuning
by Charlotte RuddickMariaDB and MySQL performance tuning, theory and primer.
SSM – PMM 1.x Fork with Additional Features
by Gordan BobicSSM is a fork of PMM 1.x with additional features, updates and fixes. Notable new features in the initial release include QAN query harvesting via slow log in RDS, manual node cleanup functionality, and ARM64 builds.
MySQL / MariaDB: Waiting for table flush
by Gordan BobicTroubleshooting performance degradation caused by pileup of queries stuck in “Waiting for table flush” state in MySQL and MariaDB.
MySQL / MariaDB: Waiting for query cache lock
by Gordan BobicTroubleshooting performance degradation caused by pileup of queries stuck in “Waiting for query cache lock” state in MySQL and MariaDB.
MySQL – Fixing: Got fatal error 1236 from master when reading data from binary log: log event entry exceeded max_allowed_packet; Increase max_allowed_packet on master;
by Gordan BobicMariaDB Performance Tuning and MySQL Performance Tuning
by Gordan BobicA summary of basics of MariaDB and MySQL performance tuning, along with a few more advanced hints and tips. Beyond these, further tuning becomes very workload specific.
MariaDB and MySQL DROP / TRUNCATE Lock / Stall Bug, Mitigations and Workarounds
by Gordan BobicWhen you DROP or TRUNCATE a table or partition in MySQL and you have a large buffer pool, you may noticed a complete server lock-up or stall of multiple seconds. Mitigation and Workarounds.