Red Hat

Hi,

I am trying to find the number of cache misses that are caused by my code. The best way I could find was to use the perf command. After running command: perf stat dd if=/dev/zero of=/dev/null count=100, the output I got is:

Code:

1.812057  task-clock-msecs         #      0.876 CPUs 
              0  context-switches         #      0.000 M/sec
              0  CPU-migrations           #      0.000 M/sec
            216  page-faults              #      0.119 M/sec
  <not counted>  cycles                  
  <not counted>  instructions            
  <not counted>  cache-references        
  <not counted>  cache-misses

I actually want to know the #cache-misses, which is not counted. I tried specifying the event: perf stat -e cache-misses dd if=/dev/zero of=/dev/null count=100, but the same results (not counted).

It will be great if someone can help me to find the cache-misses for my code.

Thanks as always!