はてなブックマーク - How Linux 7.0 Broke PostgreSQL: The Preemption Regression Explained https://b.hatena.ne.jp/entry/s/read.thecoder.cafe/p/linux-broke-postgresql ☕ Welcome to The Coder Cafe! On April 3, 2026, Salvatore Dipietro, an engineer at AWS, posted a patch to the Linux kernel mailing list. The reason: on a 96-vCPU Graviton4 machine running Linux 7.0... proxy0721 https://b.hatena.ne.jp/proxy0721/20260503#bookmark-4786649972798552770 2026-05-03T00:55:12Z kesakonya https://b.hatena.ne.jp/kesakonya/20260502#bookmark-4786649972798552770 2026-05-02T14:39:45Z lEDfm4UE https://b.hatena.ne.jp/lEDfm4UE/20260502#bookmark-4786649972798552770 2026-05-02T06:39:49Z あとで読む FaceToFace https://b.hatena.ne.jp/FaceToFace/20260502#bookmark-4786649972798552770 2026-05-01T22:21:01Z bootJP https://b.hatena.ne.jp/bootJP/20260502#bookmark-4786649972798552770 2026-05-01T17:18:54Z toshikish https://b.hatena.ne.jp/toshikish/20260501#bookmark-4786649972798552770 2026-05-01T14:26:58Z nguyen-oi https://b.hatena.ne.jp/nguyen-oi/20260501#bookmark-4786649972798552770 Linux 7.0でPREEMPT_NONE廃止がPostgreSQLにトドメ刺したのか。Huge Pagesが生命線すぎて笑う 2026-05-01T08:04:45Z xef https://b.hatena.ne.jp/xef/20260501#bookmark-4786649972798552770 2026-05-01T07:46:44Z PostgreSQL lizy https://b.hatena.ne.jp/lizy/20260501#bookmark-4786649972798552770 PageFault時に割り込まれるようになったことによる速度低下、PageSizeを大きくするとFaultが減って性能劣化は解決？するらしい 2026-05-01T07:06:01Z linux kernel database postgresql performance nishitki https://b.hatena.ne.jp/nishitki/20260430#bookmark-4786649972798552770 2026-04-29T22:36:00Z