LinuxPerf.jl

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`@pstats` frequently reports 0 cpu cycles

4

```julia julia> @pstats rand(1000,1000) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ┌ cpu-cycles 0.00e+00 47.4% # 0.0 cycles per ns │ stalled-cycles-frontend 0.00e+00 47.4% # NaN% of cycles └ stalled-cycles-backend 0.00e+00 47.4% # NaN% of cycles...

topolarity

```console $ perf list | grep 'OR.*Hardware event' branch-instructions OR branches [Hardware event] cpu-cycles OR cycles [Hardware event] stalled-cycles-backend OR idle-cycles-backend [Hardware event] stalled-cycles-frontend OR idle-cycles-frontend [Hardware event] ``` ```julia-repl...

giordano

Document what the "ERROR: perf_event_open error : Operation not supported" error means

1

I copied the example in the README and got ```julia-repl ulia> data = zeros(10000); @measure g(data) ERROR: perf_event_open error : Operation not supported Stacktrace: [1] error(s::String) @ Base ./error.jl:35 [2]...

LilithHafner