Mastodawn

crcastle 1d ago

AWS engineer reports PostgreSQL perf halved by Linux 7.0, fix may not be easy

https://lore.kernel.org/lkml/yr3inlzesdb45n6i6lpbimwr7b25kqk...

https://www.phoronix.com/news/Linux-7.0-AWS-PostgreSQL-Drop

Re: [PATCH 0/1] sched: Restore PREEMPT_NONE as default - Andres Freund

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lfittl 1d ago

Its worth reading this follow-up LKML post by Andres Freund (who works on Postgres): https://lore.kernel.org/lkml/yr3inlzesdb45n6i6lpbimwr7b25kqk...

Re: [PATCH 0/1] sched: Restore PREEMPT_NONE as default - Andres Freund

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jeffbee

Funny how "use hugepages" is right there on the table and 99% of users ignore it.

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bombcar 1d ago

I’m absolutely flabbergasted by the performance left on the table; even by myself - just yesterday I learned Gentoo’s emerge can use git and be a billion times faster.