On Tue, Mar 16, 2021 at 09:49:42AM +0800, Jin, Yao wrote:
SNIP
Performance counter stats for 'system wide':
136,655,302 cpu_core/branch-instructions/
1.003171561 seconds time elapsed
So we need special rules for both cycles and branches.
The worse thing is, we also need to process the hardware cache events.
# ./perf stat -e cpu_core/LLC-loads/
event syntax error: 'cpu_core/LLC-loads/'
\___ unknown term 'LLC-loads' for pmu 'cpu_core'
valid terms: event,pc,edge,offcore_rsp,ldlat,inv,umask,frontend,cmask,config,config1,config2,name,period,percore
Initial error:
event syntax error: 'cpu_core/LLC-loads/'
\___ unknown term 'LLC-loads' for pmu 'cpu_core'
If we use special rules for establishing all event mapping, that looks too much. :(
hmmm but wait, currently we do not support events like this:
'cpu/cycles/'
'cpu/branches/'
the pmu style accepts only 'events' or 'format' terms within //
we made hw events like 'cycles','instructions','branches' special
to be used without the pmu
so why do we need to support cpu_code/cycles/ ?
jirka