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What Makes System Calls Expensive: A Linux Internals Deep Dive

(blog.codingconfessions.com)
72 points rbanffy | 2 comments | 20 Sep 25 13:53 UTC | HN request time: 0s | source
1. anonymousiam ◴[20 Sep 25 16:50 UTC] No.45314976[source]▶
On a secure system (not serving to the Internet, and all trusted local users), you can add "mitigations=off" to greatly improve performance.

https://fosspost.org/disable-cpu-mitigations-on-linux

replies(1): >>45319879 #
2. abnercoimbre ◴[21 Sep 25 03:46 UTC] No.45319879[source]▶
This depends on the CPU. From the article you linked:

> some CPUs like those in the AMD 7000 series can actually give a worse performance if mitigations are turned off.

Due diligence!