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Sunshine@piefed.zip to Linux@programming.devEnglish · 5 天前

Linux 7.0 Cuts PostgreSQL Performance in Half

winbuzzer.com

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Linux 7.0 Cuts PostgreSQL Performance in Half

winbuzzer.com

Sunshine@piefed.zip to Linux@programming.devEnglish · 5 天前
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An AWS engineer has reported PostgreSQL throughput dropping to 0.51x on Linux 7.0 after a kernel preemption change, with no fix before stable release.
  • Rimu@piefed.social
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    5 天前

    Wouldn’t it make sense to merge in rseq support well in advance of removing PREEMPT_NONE, not do both at the same time?

    • deegeese@sopuli.xyz
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      4 天前

      But that hurts the ego of the kernel developer because they have to wait for the next release.

    • Die4Ever@retrolemmy.com
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      4 天前

      sounds like rseq has been around since 2018 https://www.phoronix.com/news/Restartable-Sequences-Speed

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