Re: unknown NMI on AMD Rome

2021-03-17 Thread Arnaldo Carvalho de Melo
Em Wed, Mar 17, 2021 at 04:32:17PM +0300, Alexander Monakov escreveu: > On Wed, 17 Mar 2021, Peter Zijlstra wrote: > > On Wed, Mar 17, 2021 at 09:48:29AM +0100, Ingo Molnar wrote: > > > > https://developer.amd.com/wp-content/resources/56323-PUB_0.78.pdf > > > 1215 IBS (Instruction Based

Re: unknown NMI on AMD Rome

2021-03-17 Thread Alexander Monakov
On Wed, 17 Mar 2021, Peter Zijlstra wrote: > On Wed, Mar 17, 2021 at 09:48:29AM +0100, Ingo Molnar wrote: > > > https://developer.amd.com/wp-content/resources/56323-PUB_0.78.pdf > > > > So: > > > > > > 1215 IBS (Instruction Based Sampling) Counter Valid Value > > May be Incorrect After

Re: unknown NMI on AMD Rome

2021-03-17 Thread Peter Zijlstra
On Wed, Mar 17, 2021 at 09:48:29AM +0100, Ingo Molnar wrote: > > https://developer.amd.com/wp-content/resources/56323-PUB_0.78.pdf > > So: > > > 1215 IBS (Instruction Based Sampling) Counter Valid Value > May be Incorrect After Exit From Core C6 (CC6) State > > Description > > If a

Re: unknown NMI on AMD Rome

2021-03-17 Thread Ingo Molnar
* Kim Phillips wrote: > On 3/16/21 2:53 PM, Peter Zijlstra wrote: > > On Tue, Mar 16, 2021 at 04:45:02PM +0100, Jiri Olsa wrote: > >> hi, > >> when running 'perf top' on AMD Rome (/proc/cpuinfo below) > >> with fedora 33 kernel 5.10.22-200.fc33.x86_64 > >> > >> we got unknown NMI messages: >

Re: unknown NMI on AMD Rome

2021-03-16 Thread Kim Phillips
On 3/16/21 2:53 PM, Peter Zijlstra wrote: > On Tue, Mar 16, 2021 at 04:45:02PM +0100, Jiri Olsa wrote: >> hi, >> when running 'perf top' on AMD Rome (/proc/cpuinfo below) >> with fedora 33 kernel 5.10.22-200.fc33.x86_64 >> >> we got unknown NMI messages: >> >> [ 226.700160] Uhhuh. NMI received

Re: unknown NMI on AMD Rome

2021-03-16 Thread Peter Zijlstra
On Tue, Mar 16, 2021 at 04:45:02PM +0100, Jiri Olsa wrote: > hi, > when running 'perf top' on AMD Rome (/proc/cpuinfo below) > with fedora 33 kernel 5.10.22-200.fc33.x86_64 > > we got unknown NMI messages: > > [ 226.700160] Uhhuh. NMI received for unknown reason 3d on CPU 90. > [ 226.700162]

Re: unknown NMI on AMD Rome

2021-03-16 Thread Alexander Monakov
On Tue, 16 Mar 2021, Adam Borowski wrote: > On Tue, Mar 16, 2021 at 04:45:02PM +0100, Jiri Olsa wrote: > > hi, > > when running 'perf top' on AMD Rome (/proc/cpuinfo below) > > with fedora 33 kernel 5.10.22-200.fc33.x86_64 > > > > we got unknown NMI messages: > > > > [ 226.700160] Uhhuh. NMI

Re: unknown NMI on AMD Rome

2021-03-16 Thread Adam Borowski
On Tue, Mar 16, 2021 at 04:45:02PM +0100, Jiri Olsa wrote: > hi, > when running 'perf top' on AMD Rome (/proc/cpuinfo below) > with fedora 33 kernel 5.10.22-200.fc33.x86_64 > > we got unknown NMI messages: > > [ 226.700160] Uhhuh. NMI received for unknown reason 3d on CPU 90. > [ 226.700162]

unknown NMI on AMD Rome

2021-03-16 Thread Jiri Olsa
hi, when running 'perf top' on AMD Rome (/proc/cpuinfo below) with fedora 33 kernel 5.10.22-200.fc33.x86_64 we got unknown NMI messages: [ 226.700160] Uhhuh. NMI received for unknown reason 3d on CPU 90. [ 226.700162] Do you have a strange power saving mode enabled? [ 226.700163] Dazed and