I am running a workload on MySQL and collecting memory access data on Oracle Linux 7.7 my kernel version is 4.14.35.1902. I start the VTune 2020 collection by loading the sep driver and after 50 secs i.e at end of the run I am receiving these messages :
Message from syslogd..
kernel:Uhhuh. NMI received for unknown reason 20 on CPU 84.
Message from syslogd..
kernel:Do you have a strange power saving mode enabled?
Message from syslogd
kernel:Dazed and confused, but trying to continue
I also tried driverless collection ..it generates the .perf files it goes through fine without any messages. So I moved back to VTune 2019 and when I do the data collection with sep driver I do not see any messages generated by kernel.
Let me know if I am missing anything in my setup . I don't see these messages affecting my performance but not sure if this is expected !
Thank You
Ketki Haridas
Intel Corporation