September 1, 2015

Linux 4.3 Scheduler Change "Potentially Affects Every SMP Workload In Existence"

Aside from Ingo Molnar's x86 boot changes he sent in to Linus Torvalds for the Linux 4.3 merge window, he also sent in the scheduler changes for this next version of the Linux kernel. 

With Linux 4.3 for those running any sort of SMP (Symmetric Multi-Processing) workloads, the performance could sway one way or another, but hopefully it's for the better. Here's the key part of Molnar's pull request for the 4.3 scheduler changes: 

The biggest change in this cycle is the rewrite of the main SMP load balancing metric: the CPU load/utilization...

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