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

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