1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
/*
* Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <vnet/vnet.h>
#include <perfmon/perfmon.h>
#include <perfmon/intel/core.h>
static u8 *
format_branch_mispredictions (u8 *s, va_list *args)
{
perfmon_node_stats_t *ns = va_arg (*args, perfmon_node_stats_t *);
int row = va_arg (*args, int);
switch (row)
{
case 0:
s = format (s, "%9.2f", ns->value[0] / (f64) ns->n_calls);
break;
case 1:
s = format (s, "%9.2f", ns->value[0] / (f64) ns->n_packets);
break;
case 2:
s = format (s, "%9.2f", ns->value[1] / (f64) ns->n_calls);
break;
case 3:
s = format (s, "%9.2f", ns->value[1] / (f64) ns->n_packets);
break;
case 4:
s = format (s, "%05.2f", (ns->value[2] / (f64) ns->value[0]) * 100);
break;
}
return s;
}
PERFMON_REGISTER_BUNDLE (branch_mispredictions) = {
.name = "branch-mispred",
.description = "Branches, branches taken and mis-predictions",
.source = "intel-core",
.type = PERFMON_BUNDLE_TYPE_NODE,
.events[0] = INTEL_CORE_E_BR_INST_RETIRED_ALL_BRANCHES,
.events[1] = INTEL_CORE_E_BR_INST_RETIRED_NEAR_TAKEN,
.events[2] = INTEL_CORE_E_BR_MISP_RETIRED_ALL_BRANCHES,
.n_events = 3,
.format_fn = format_branch_mispredictions,
.column_headers = PERFMON_STRINGS ("Branches/call", "Branches/pkt",
"Taken/call", "Taken/pkt", "% MisPred"),
};
|
