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SubjectRe: Performance drop on kernel-4.17 visible on Stream, Linpack and NAS parallel benchmarks
+++ Rafael J. Wysocki [06/06/18 14:34 +0200]:
>On Wed, Jun 6, 2018 at 2:27 PM, Jakub Racek <> wrote:
>> Hi,
>> There is a huge performance regression on the 2 and 4 NUMA node systems on
>> stream benchmark with 4.17 kernel compared to 4.16 kernel. Stream, Linpack
>> and NAS parallel benchmarks show upto 50% performance drop.
>OK, and why do you think that it is related to ACPI?

I don't know where the problems is or who to CC.

What information should be added? I can probably provide it, if I know


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