Messages in this thread | | | From | Kurt Kanzenbach <> | Subject | Re: [RFC PATCH] arm64: defconfig: Disable fine-grained task level IRQ time accounting | Date | Wed, 29 Jul 2020 10:40:29 +0200 |
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Hi Alison,
On Wed Jul 29 2020, Alison Wang wrote: > In the current arm64 defconfig, CONFIG_IRQ_TIME_ACCOUNTING is enabled as > default. According to my tests on NXP's LayerScape and i.MX platforms, > the system hangs when running the command "stress-ng --hrtimers 1" with > CONFIG_IRQ_TIME_ACCOUNTING enabled. Disabling this option, the issue > disappears. CONFIG_IRQ_TIME_ACCOUNTING causes serious performance impact > when running hrtimer stress test at the same time.
I think instead of disabling the option for all arm64 devices, it might be better to analyze the root-cause why the hrtimer test hangs when this option is enabled.
+Cc hrtimer maintainers: Thomas and Anna-Maria
Thanks, Kurt [unhandled content-type:application/pgp-signature] | |