l1-cache

[jamin@dependent 2018-06-06-bindump]$ perf stat -e task-clock,cycles,instructions,cache-references,cache-misses
./say hello > /dev/null

 Performance counter stats for './say hello':

          0.197061      task-clock:u (msec)       #    0.363 CPUs utilized
            133682      cycles:u                  #    0.678 GHz
            115712      instructions:u            #    0.87  insn per cycle
              1486      cache-references:u        #    7.541 M/sec
               937      cache-misses:u            #   63.055 % of all cache refs

       0.000542947 seconds time elapsed

[jamin@dependent 2018-06-06-bindump]$ perf stat -e L1-dcache-load-misses,L1-dcache-loads,L1-dcache-stores,L1-icache-load-misses ./say hello > /dev/null

 Performance counter stats for './say hello':

               963      L1-dcache-load-misses:u   #    4.98% of all L1-dcache hits
             19332      L1-dcache-loads:u
              4357      L1-dcache-stores:u
               223      L1-icache-load-misses:u

       0.000503910 seconds time elapsed

[jamin@dependent 2018-06-06-bindump]$ valgrind --tool=cachegrind ./say hello > /dev/null
==3467== Cachegrind, a cache and branch-prediction profiler
==3467== Copyright (C) 2002-2017, and GNU GPL'd, by Nicholas Nethercote et al.
==3467== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info
==3467== Command: ./say hello
==3467==
--3467-- warning: L3 cache found, using its data for the LL simulation.
==3467==
==3467== I   refs:      122,952
==3467== I1  misses:        275
==3467== LLi misses:        274
==3467== I1  miss rate:    0.22%
==3467== LLi miss rate:    0.22%
==3467==
==3467== D   refs:       29,041  (22,248 rd   + 6,793 wr)
==3467== D1  misses:        529  (   371 rd   +   158 wr)
==3467== LLd misses:        468  (   314 rd   +   154 wr)
==3467== D1  miss rate:     1.8% (   1.7%     +   2.3%  )
==3467== LLd miss rate:     1.6% (   1.4%     +   2.3%  )
==3467==
==3467== LL refs:           804  (   646 rd   +   158 wr)
==3467== LL misses:         742  (   588 rd   +   154 wr)
==3467== LL miss rate:      0.5% (   0.4%     +   2.3%  )