Improving Percona Server performance with Flashcache on the Virident tachIOn Drive

August, 2011

Using flash storage as a second-level cache for MySQL, between disk and main memory, reduces I/O latency while avoiding the size and cost limitations of storing the data on flash alone. This white paper presents the results of our benchmarks with Facebook's Flashcache module and the Virident tachIOn PCI-E storage device. We explain when it is cost-effective to use Flashcache, we show the performance characteristics of the hybrid storage, and we develop guidelines for selecting and deploying the components.


Baron Schwartz

Vice President of Consulting

Vadim Tkachenko


Vadim leads Percona's Development group which produces the Percona Server, Percona XtraDB, and Percona XtraBackup. He is an expert in LAMP performance, especially optimizing MySQL and InnoDB internals to take full advantage of modern hardware using his multi-threaded programming background. Source code patches authored by Vadim have been incorporated by Oracle Corporation and its predecessors into the mainstream MySQL and InnoDB products. At Percona, Vadim also designs no-gimmicks benchmark tests of hardware, filesystems, storage engines, and databases.

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