Kernel on Ivan Luminariahttps://ivanluminaria.com/en/tags/kernel/Recent content in Kernel on Ivan LuminariaHugoenTue, 24 Feb 2026 08:03:00 +0100Oracle on Linux: the kernel parameters nobody configureshttps://ivanluminaria.com/en/posts/oracle/oracle-linux-kernel/Tue, 24 Feb 2026 08:03:00 +0100https://ivanluminaria.com/en/posts/oracle/oracle-linux-kernel/<p>The client was a logistics company running Oracle 19c Enterprise Edition on Oracle Linux 8. Sixty concurrent users, a custom ERP application, about 400 GB of data. The server was a Dell PowerEdge with 128 GB of RAM and 32 cores.</p> <p>The complaints were vague but persistent: &ldquo;The system is slow.&rdquo; &ldquo;Morning queries take twice as long as two months ago.&rdquo; &ldquo;Every now and then everything freezes for a few seconds.&rdquo;</p>