xref: /linux/tools/perf/scripts/python/stat-cpi.py (revision 76727c2c3bf4a5e58dff8cca23d0147ba08fb2c8) 
1#!/usr/bin/env python
2# SPDX-License-Identifier: GPL-2.0
3
4data    = {}
5times   = []
6threads = []
7cpus    = []
8
9def get_key(time, event, cpu, thread):
10    return "%d-%s-%d-%d" % (time, event, cpu, thread)
11
12def 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
22def 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
30def get(time, event, cpu, thread):
31    key = get_key(time, event, cpu, thread)
32    return data[key][0]
33
34def stat__cycles_k(cpu, thread, time, val, ena, run):
35    store(time, "cycles", cpu, thread, val, ena, run);
36
37def stat__instructions_k(cpu, thread, time, val, ena, run):
38    store(time, "instructions", cpu, thread, val, ena, run);
39
40def stat__cycles_u(cpu, thread, time, val, ena, run):
41    store(time, "cycles", cpu, thread, val, ena, run);
42
43def stat__instructions_u(cpu, thread, time, val, ena, run):
44    store(time, "instructions", cpu, thread, val, ena, run);
45
46def stat__cycles(cpu, thread, time, val, ena, run):
47    store(time, "cycles", cpu, thread, val, ena, run);
48
49def stat__instructions(cpu, thread, time, val, ena, run):
50    store(time, "instructions", cpu, thread, val, ena, run);
51
52def 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
64def 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)
79