Still that huge a regression that affects multiple platforms doesn't sound too n... | Hacker News

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whizzter 3 months ago | parent | context | favorite | on: AWS engineer reports PostgreSQL perf halved by Lin...

Still that huge a regression that affects multiple platforms doesn't sound too neat, did they narrow down the root cause?

db48x 3 months ago [–]

That should be obvious to anyone who read the initial message. The regression was caused by a configuration change that changed the default from PREEMPT_NONE to PREEMT_LAZY. If you don’t know what those options do, use the source. (<https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/lin...>)

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