until_the_cores_are_all_saturated_there_is_no_use_having_more_of_them.png

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1. pistolero :thispersondoesnotexist: (p@freespeechextremist.com)'s status on Monday, 15-Jan-2024 07:13:36 JST pistolero :thispersondoesnotexist:

   in reply to
   @i @dcc @p
   
   > why tho,
   
   Contention for the memory bus is the biggest performance hit on $current_year CPUs and aside from that, the biggest performance bottlenecks for Pleroma are, in order, disk I/O and network I/O. The CPUs on the box mostly sit idle, meaning that more hardware threads wouldn't accomplish anything but heating the machine up.
   
   I suspect that it's faster with less NUMA-wrangling, but have not benchmarked it. I just know that on this workload, I could probably disable half the physical cores and still have no trouble.
   
   > plan9'tism?
   
   I don't know what that'd have to do with a hardware feature on a machine that runs Linux and a handful of VMs.
   until_the_cores_are_all_saturated_there_is_no_use_having_more_of_them.png