POWER Coregroup Support Coming With Linux 5.10
Written by Michael Larabel in Hardware on 21 September 2020 at 06:28 AM EDT. Add A Comment
HARDWARE --
There is some new feature code in the IBM POWER CPU architecture's "-next" Git tree for the Linux 5.10 kernel.

Queued up this past week is coregroup support for POWER processors on Linux. This includes a cleanup of the PowerPC topologies code and adding the Coregroup support, which in this context is about a group/subset of cores on a die that share a resource.

This grouping of cores has the possibility of providing slight benefits to scheduler latency and throughput in some instances. Within this commit introducing the POWER Coregroup support there are various small benchmarks run in stressing the kernel scheduling code with this support enabled.

It's about time to run some fresh benchmarks on the Raptor Computing Systems' Talos and Blackbird hardware so I'll be sure to give Linux 5.10 a whirl and see how the performance looks in a wider set of benchmarks.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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