On Wed, Apr 12, 2023 at 18:01:13 +0200, Elvis Stansvik wrote: > Den ons 12 apr. 2023 kl 09:51 skrev ihad <ihad@xxxxxxxxx>: > > > > Hi, > > > > On 4/11/2023 5:49 PM, Luna Celeste wrote: > > >> An AMD CPU that hangs when it's mostly idle rings a bell: > > >> Try disabling c6 and see if the problem goes away. Some older AMD CPUs had > > >> problems waking up from deep sleep. The script [1] can do it for you: > > > > > > This is a 16 core AMD Ryzen 9 3950X; does that count as older? The > > > machine is only a few years old. I understand that's quite a while in > > > tech, but I want to be sure. > > > > I had that problem on this CPU: > > ~~ > > processor : 8 > > vendor_id : AuthenticAMD > > cpu family : 23 > > model : 1 > > model name : AMD Ryzen 5 1600X Six-Core Processor > > stepping : 1 > > ~~ > > According to Google my model was launched in April, 2017. > > I'd give it a shot, but YMMV... > > At work we've been having a problem with a 12 core 3900X that would > randomly lock up in a pattern similar to yours. > > 13 days ago I added rcu_nocbs=0-23 processor.max_cstate=1 kernel > parameters and it's been running fine since then. Don't want to say > the issue is finally solved until it's been running for a little > longer, but it's something you could try, in case your 3950X suffers > the same bug. > > More info at https://wiki.archlinux.org/title/Ryzen#Soft_lock_freezing > and also some more explanation at > https://utcc.utoronto.ca/~cks/space/blog/linux/KernelRcuNocbsMeaning Curious! The machine I'm running isn't going into sleep of any kind (at least not that I know of, I have all the power management disabled, and it's not a laptop, but I'll give this a try regardless. -- Cheers, Luna Celeste
