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February 03 – 05 , 2016

PgConf.Russia 2016

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Talks

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PgConf.Russia 2016
  • Nikolai Ryzhikov
    Nikolai Ryzhikov Health Samurai
  • Andres  Freund
    Andres Freund Citus Data

    Postgresql's buffer manager has parts where it's showing its age. We'll discuss how it currently works, what problems there are, and what attempts are in progress to rectify its weaknesses.

    • Lookups in the buffer cache are expensive
    • The buffer mapping table is organized as a hash table, which makes efficient implementations of prefetching, write coalescing, dropping of cache contents hard
    • Relation extension scales badly
    • Cache replacement is inefficient
    • Cache replacement replaces the wrong buffers

  • Andreas Scherbaum
    Andreas Scherbaum Pivotal Ltd

    Greenplum is a PostgreSQL fork, optimized for Analytics and Data Warehouse use cases. Pivotal announced in early 2015 that a number of products will go Open Source, one of them is Greenplum Database. This talk provides an overview over the history of Greenplum, the entire process of bringing the product into Open Source, all the stumbling blocks we ran into, and explains how contributors can participate.

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