'no assembly is recorded'

Сергей Цыпанов sergei.tsypanov at yandex.ru
Thu Dec 27 20:24:30 UTC 2018


Hi,

I tried to use LinuxPerfAsmProfiler to view the hottest assembly code,
both -XX:+UnlockDiagnosticVMOptions and -XX:+PrintAssembly we added but I got this output

Hottest code regions (>10,00% "cycles" events):

....[Hottest Region 1]..............................................................................
perf-25250.map, [unknown] (224 bytes) 

 <no assembly is recorded, native region>
....................................................................................................
 48,99%  <total for region 1>

....[Hottest Region 2]..............................................................................
perf-25250.map, [unknown] (75 bytes) 

 <no assembly is recorded, native region>
....................................................................................................
 46,55%  <total for region 2>

....[Hottest Regions]...............................................................................
 48,99%      perf-25250.map  [unknown] (224 bytes) 
 46,55%      perf-25250.map  [unknown] (75 bytes) 
  0,30%           libjvm.so  SpinPause (9 bytes) 
  0,21%              kernel  [unknown] (0 bytes) 
  0,15%           libjvm.so  _ZN22ParallelTaskTerminator17offer_terminationEP20TerminatorTerminator (0 bytes) 


I suspect something is missing from my config, but I cannot guess what exactly.

Regards,
Sergey Tsypanov


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