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

Background on PREEMPT_LAZY:

https://lwn.net/Articles/994322/

The long road to lazy preemption

The kernel's CPU scheduler currently offers several preemption modes that implement a range of [...]

LWN.net