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@nakano-shingoin株式会社モスティープレイス

Ruby公式Dockerイメージにjemallocを導入する方法

Last updated at Posted at 2020-05-07

経緯

  • Ruby公式Dockerイメージで立てたサーバで、メモリ消費量が増加してpumaが勝手に再起動してサービスが瞬断することが発生するようになった
  • その対策として、メモリ領域の断片化を減らしてくれるjemallocを導入した

導入方法

以下を追記

Dockerfile
FROM ruby:2.4.2

RUN apt-get update && apt-get install -y libjemalloc-dev libjemalloc2
ENV LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libjemalloc.so.2

※ 以前はパッケージの名前libjemalloc1だったが、今はlibjemalloc2に変更になっていた

参考

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