Yup - interesting to see so much written about Postgres having a performance regression on Linux 7.0, in a scenario that affects almost no-one in practice. Meanwhile MongoDB refuses to run at all on Linux 7.0 due to some issue with tcmalloc.

https://jira.mongodb.org/browse/SERVER-121885

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duskwuff 3 hours ago | parent [-]

The underlying tcmalloc issue is interesting - the library was relying on an implementation detail of the rseq kernel API which was never guaranteed, and which already generated warnings in previous versions.

https://lore.kernel.org/all/20260126204745.GP171111@noisy.pr...

	▲	nijave an hour ago \| parent [-]
		Implemented behavior of the interface vs documented behavior of the interface I thought the warnings were only generated when you turned on a kernel config "that no one uses in practice"