# Scheduler benchmark (hackbench) degradation with 5.10.x kernel versions

**URL:** <https://forums.sifive.com/t/scheduler-benchmark-hackbench-degradation-with-5-10-x-kernel-versions/4587>\
**Category:** HiFive Unleashed\
**Created:** [April 1, 2021, 7:16am UTC](https://forums.sifive.com/t/scheduler-benchmark-hackbench-degradation-with-5-10-x-kernel-versions/4587 "2021-04-01T07:16:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ankita020696](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@Ankita020696](https://forums.sifive.com/u/Ankita020696)\
**Post date:** [April 1, 2021, 7:16am UTC](https://forums.sifive.com/t/scheduler-benchmark-hackbench-degradation-with-5-10-x-kernel-versions/4587/1 "2021-04-01T07:16:11Z")

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Hi,  
I executed hackbench(Intel-lkp) on linux kernel versions 5.10.11, 5.10.19, 5.10.22 & 5.10.25. I see the degradation with kernel version 5.10.22 & 5.10.25 as compared to 5.10.19. What could be the reason for it? Can someone please help to understand reason behind it?

Thanks

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<div class="post-metadata">

**Author:** ![jimw](https://avatars.discourse-cdn.com/v4/letter/j/f14d63/32.png) [@jimw](https://forums.sifive.com/u/jimw)\
**Post date:** [April 1, 2021, 3:53pm UTC](https://forums.sifive.com/t/scheduler-benchmark-hackbench-degradation-with-5-10-x-kernel-versions/4587/2 "2021-04-01T15:53:56Z")

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I would suggest asking linux kernel developers. See for instance  
[https://lists.infradead.org/mailman/listinfo/linux-riscv](https://lists.infradead.org/mailman/listinfo/linux-riscv)