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February 03 – 05 , 2016

PgConf.Russia 2016

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PgConf.Russia 2016
  • Марат Фаттахов
    Марат Фаттахов BARS group
    Dmitry Boikov
    Dmitry Boikov BARS group

    First working on Oracle, we could not ignore appearance and growth of PostgreSQL. I will describe how we came to PostgreSQL and share some experience of migrating a large medical system.

    • developing a code converter;
    • packages migration;
    • our patches solving some of the migration problems.

  • Alexander Krizhanovsky
    Alexander Krizhanovsky NatSys Lab

    We'll discuss how does Linux work with virtual memory. The following topics will be covered: * x86-64 page table, context switch and page fault; * internals of virtual memory management (VMM) in Linux; * page eviction methods in Linux, page cache and anonymous pages; * huge and gigantic pages, transparent huge pages; * how mmap(2) works and what madvise(2), msync(2) etc. provide; * why large databases don't use mmap(2), but rather implement buffer pool on their own; * ans surely how to tune Linux VMM using sysctl.

  • Ronan Dunklau
    Ronan Dunklau Dalibo

    Multicorn is a generic Foreign Data Wrapper which goal is to simplify development of FDWs by writing them in Python.

    We will see:

    • what is an FDW what Multicorn is trying to solve how to use it, with a brief tour of the FDWs shipping with Multicorn.
    • how to write your own FDW in python, including the new 9.5 IMPORT FOREIGN SCHEMA api.
    • the internals: what Multicorn is doing for you behind the scenes, and what it doesn't

    After a presentation of FDWs in general, and what the Multicorn extension really is, we will take a look at some of the FDWs bundled with Multicorn.

    Then, a complete tour of the Multicorn API will teach you how to write a FDW in python, including the following features:

    • using the table definition
    • WHERE clauses push-down
    • output columns restrictions
    • influencing the planner
    • writing to a foreign table
    • IMPORT FOREIGN SCHEMA
    • ORDER BY clauses pushdown
    • transaction management

    This will be a hands-on explanation, with code snippets allowing you to build your own FDW in python from scratch.

  • Алексей Лесовский
    Алексей Лесовский PostgreSQL Consulting LLC
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