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 Elvis > > -- > Regards, > ihad. > >
