Cluster Scheduler Support Queued Ahead Of Linux 5.16

[phoronix]

Phoronix: Cluster Scheduler Support Queued Ahead Of Linux 5.16

Cluster scheduler support has been queued up for landing in the Linux 5.16 kernel for AArch64 and x86_64 systems for improving the CPU scheduler behavior for systems that have clusters of CPU cores...

https://www.phoronix.com/scan.php?page=news_item&px=Linux-5.16-Cluster-Scheduler

[luben]

Could it also benefit Zen chips where L3 cache is shared between 4 or 8 cores?

[ms178]

Could it also benefit Zen chips where L3 cache is shared between 4 or 8 cores?

I suppose so, the Scheduler might keep a task on a cluster now instead of moving it around randomly between both. There are also other CPU's around with crazy internal topologies (just as my Haswell-EP Xeon E5-2678 V3, where 8 cores are on one ringbus and four on a second ringbus - these Xeons support a Cluster-on-Die mode which splits the core into two NUMA blocks with 6 cores each, but due to that special topology, the memory latencies are not uniform in both clusters).