Use tsc as clocksource for all x86 instances #2144
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| @@ -27,15 +27,7 @@ function try-set-clocksource() { | |||
| fi | |||
| } | |||
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| case "$(imds /latest/meta-data/system)" in | |||
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I think we can remove this script and the associated systemd unit altogether. On AL2, we add an arg to the kernel cmdline that makes tsc the default (if it's available).
We do need to check AL2023, I'm not sure if tsc is baked-in as the default there.
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Couldn't find docs on it but anecdotally it seems AL2023 also defaults to Xen as the clocksource for instances with a Xen hypervisor. I've moved the |
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/ci |
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trying this again :) /ci |
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/ci |
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@ndbaker1 the workflow that you requested has completed. 🎉
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Issue #, if available:
Implements the recommendation by https://repost.aws/knowledge-center/manage-ec2-linux-clock-source to use
tscas the clocksource for all Intel/AMD instances.Description of changes:
By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.
Testing Done
See this guide for recommended testing for PRs. Some tests may not apply. Completing tests and providing additional validation steps are not required, but it is recommended and may reduce review time and time to merge.
Tested on
t4g.small,m6i.large, andc4.largeinstances to confirm clocksource across the 3 different cases.t4g.smallis an arm64 instance and showed the clocksource asarch_sys_counterm6i.largeis nitro based and showed astsc.c4.largeis xen and showed astsc.