tools/perf/scripts/python/stat-cpi.py

   1 # SPDX-License-Identifier: GPL-2.0
   2
   3 from __future__ import print_function
   4
   5 data    = {}
   6 times   = []
   7 threads = []
   8 cpus    = []
   9
  10 def get_key(time, event, cpu, thread):
  11     return "%d-%s-%d-%d" % (time, event, cpu, thread)
  12
  13 def store_key(time, cpu, thread):
  14     if (time not in times):
  15         times.append(time)
  16
  17     if (cpu not in cpus):
  18         cpus.append(cpu)
  19
  20     if (thread not in threads):
  21         threads.append(thread)
  22
  23 def store(time, event, cpu, thread, val, ena, run):
  24     #print("event %s cpu %d, thread %d, time %d, val %d, ena %d, run %d" %
  25     #      (event, cpu, thread, time, val, ena, run))
  26
  27     store_key(time, cpu, thread)
  28     key = get_key(time, event, cpu, thread)
  29     data[key] = [ val, ena, run]
  30
  31 def get(time, event, cpu, thread):
  32     key = get_key(time, event, cpu, thread)
  33     return data[key][0]
  34
  35 def stat__cycles_k(cpu, thread, time, val, ena, run):
  36     store(time, "cycles", cpu, thread, val, ena, run);
  37
  38 def stat__instructions_k(cpu, thread, time, val, ena, run):
  39     store(time, "instructions", cpu, thread, val, ena, run);
  40
  41 def stat__cycles_u(cpu, thread, time, val, ena, run):
  42     store(time, "cycles", cpu, thread, val, ena, run);
  43
  44 def stat__instructions_u(cpu, thread, time, val, ena, run):
  45     store(time, "instructions", cpu, thread, val, ena, run);
  46
  47 def stat__cycles(cpu, thread, time, val, ena, run):
  48     store(time, "cycles", cpu, thread, val, ena, run);
  49
  50 def stat__instructions(cpu, thread, time, val, ena, run):
  51     store(time, "instructions", cpu, thread, val, ena, run);
  52
  53 def stat__interval(time):
  54     for cpu in cpus:
  55         for thread in threads:
  56             cyc = get(time, "cycles", cpu, thread)
  57             ins = get(time, "instructions", cpu, thread)
  58             cpi = 0
  59
  60             if ins != 0:
  61                 cpi = cyc/float(ins)
  62
  63             print("%15f: cpu %d, thread %d -> cpi %f (%d/%d)" % (time/(float(1000000000)), cpu, thread, cpi, cyc, ins))
  64
  65 def trace_end():
  66     pass
  67 # XXX trace_end callback could be used as an alternative place
  68 #     to compute same values as in the script above:
  69 #
  70 #    for time in times:
  71 #        for cpu in cpus:
  72 #            for thread in threads:
  73 #                cyc = get(time, "cycles", cpu, thread)
  74 #                ins = get(time, "instructions", cpu, thread)
  75 #
  76 #                if ins != 0:
  77 #                    cpi = cyc/float(ins)
  78 #
  79 #                print("time %.9f, cpu %d, thread %d -> cpi %f" % (time/(float(1000000000)), cpu, thread, cpi))