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Showing posts from December, 2016

The MyRocks community in 2016

The MyRocks community grew in 2016 with significant contributions from early evaluators. I appreciate their help and have been busy documenting the problems that they reported. I look forward to more contributions in 2017. MariaDB Corporation and Percona announced plans to include MyRocks in their distributions. You will be able to get MyRocks with expert support. Equally big have been the contributions from Sergey Pertunya to MyRocks. The MySQL team at Alibaba reported poor performance from range scans with sysbench. The problem was memory system contention on a performance counter and the fix made long range scans 2X faster on concurrent workloads. I have been using sysbench more and created a script to run a sequence of tests with it. During my tests I noticed too much variance during the read-only tests and the problem is non-determinism from the state of the memtable and level 0 of the LSM tree. The overhead for a search of the LSM tree depends on the amount of data in th