At Sun, 18 Feb 2024 01:40:52 -0800, "Greg A. Woods" <woods%planix.ca@localhost> wrote: Subject: Re: timekeeping regression? > > Still looking for a Round Tuit to do the investigation into why > "clocksource=tsc" isn't taking effect, and it'll have to wait a couple > more weeks now, so if anyone else beats me to it..... I did some code-reading and added some printk's to the Xen kernel and discovered the reason "clocksource=tsc" didn't work is because none of my Xen machines have X86_FEATURE_TSC_RELIABLE, and when I faked it the "warp" detection check invalidated it anyway. I think I just discovered the difference between the "good" and "bad" machines. The "good" ones both still had "dom0_vcpus_pin=true". I'll reboot the bad one with that added again soon and see how it does. -- Greg A. Woods <gwoods%acm.org@localhost> Kelowna, BC +1 250 762-7675 RoboHack <woods%robohack.ca@localhost> Planix, Inc. <woods%planix.com@localhost> Avoncote Farms <woods%avoncote.ca@localhost>
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