8b60fb0fe6
Type: feature Change-Id: I2c14f82393d11fc05c6d229f5c58603ab5c0f14d Signed-off-by: Damjan Marion <damarion@cisco.com>
121 lines
3.2 KiB
C
121 lines
3.2 KiB
C
/*
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* Copyright (c) 2020 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <vnet/vnet.h>
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#include <vlibapi/api.h>
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#include <vlibmemory/api.h>
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#include <vpp/app/version.h>
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#include <linux/limits.h>
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#include <sys/ioctl.h>
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#include <perfmon/perfmon.h>
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#include <linux/perf_event.h>
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#define foreach_perf_sw_counter \
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_ (CONTEXT_SWITCHES, "context-switches") \
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_ (PAGE_FAULTS_MIN, "page-faults-minor") \
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_ (PAGE_FAULTS_MAJ, "page-faults-major")
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typedef enum
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{
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#define _(n, s) n,
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foreach_perf_sw_counter
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#undef _
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} linux_sw_events;
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static perfmon_event_t events[] = {
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#define _(n, s) \
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[n] = { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##n, .name = s },
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foreach_perf_sw_counter
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#undef _
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};
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PERFMON_REGISTER_SOURCE (linux) = {
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.name = "linux",
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.description = "Linux kernel performance counters",
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.events = events,
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.n_events = ARRAY_LEN (events),
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};
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static u8 *
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format_context_switches (u8 *s, va_list *args)
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{
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perfmon_reading_t *r = va_arg (*args, perfmon_reading_t *);
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int row = va_arg (*args, int);
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f64 t = (f64) r->time_running * 1e-9;
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switch (row)
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{
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case 0:
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s = format (s, "%9.2f", t);
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break;
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case 1:
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if (r->time_running)
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s = format (s, "%9.2f", (f64) r->value[0] / t);
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break;
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}
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return s;
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}
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PERFMON_REGISTER_BUNDLE (context_switches) = {
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.name = "context-switches",
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.description = "per-thread context switches",
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.source = "linux",
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.type = PERFMON_BUNDLE_TYPE_THREAD,
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.events[0] = CONTEXT_SWITCHES,
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.n_events = 1,
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.format_fn = format_context_switches,
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.column_headers = PERFMON_STRINGS ("RunTime", "ContextSwitches/Sec"),
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};
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static u8 *
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format_page_faults (u8 *s, va_list *args)
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{
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perfmon_reading_t *r = va_arg (*args, perfmon_reading_t *);
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int row = va_arg (*args, int);
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f64 t = (f64) r->time_running * 1e-9;
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switch (row)
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{
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case 0:
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s = format (s, "%9.2f", t);
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break;
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case 1:
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if (r->time_running)
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s = format (s, "%9.2f", (f64) r->value[0] / t);
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break;
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case 2:
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if (r->time_running)
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s = format (s, "%9.2f", (f64) r->value[1] / t);
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break;
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}
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return s;
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}
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PERFMON_REGISTER_BUNDLE (page_faults) = {
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.name = "page-faults",
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.description = "per-thread page faults",
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.source = "linux",
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.type = PERFMON_BUNDLE_TYPE_THREAD,
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.events[0] = PAGE_FAULTS_MIN,
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.events[1] = PAGE_FAULTS_MAJ,
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.n_events = 2,
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.format_fn = format_page_faults,
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.column_headers = PERFMON_STRINGS ("RunTime", "MinorPageFaults/Sec",
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"MajorPageFaults/Sec"),
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};
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