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/*
// Copyright (c) 2019 Intel Corporation
//
// 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 <math.h>
#include "handle_lat.h"
#include "display_latency_distr.h"
#include "stats_latency.h"
#include "display.h"
#include "lconf.h"
static struct display_page display_page_latency_distr;
static struct display_column *stats_latency_distr[LAT_BUCKET_COUNT];
static struct display_column *stats_max;
static struct display_column *core_col;
static struct display_column *name_col;
static uint32_t global_min_bucket_id = 0, global_max_bucket_id = LAT_BUCKET_COUNT - 1;
static const uint16_t global_nb_buckets_displayed = 15;
static uint32_t group_size = 9; //LAT_BUCKET_COUNT / global_nb_buckets_displayed;
#define UNIT_INT(i) (((i) * bucket_unit_nsec)/1000)
#define UNIT_FRACT(i) ((((i) * bucket_unit_nsec) % 1000) / 100)
static void display_latency_distr_draw_frame(struct screen_state *state)
{
uint32_t n_tasks = stats_get_n_latency();
struct lcore_cfg *lconf = NULL;
struct task_args *targ;
char name[32];
char *ptr;
display_page_init(&display_page_latency_distr);
struct display_table *core_name = display_page_add_table(&display_page_latency_distr);
display_table_init(core_name, "Core/task");
core_col = display_table_add_col(core_name);
name_col = display_table_add_col(core_name);
display_column_init(core_col, "Nb", 4);
display_column_init(name_col, "Name", 5);
uint32_t bucket_size = stats_get_latency_bucket_size();
struct display_table *stats = display_page_add_table(&display_page_latency_distr);
uint32_t bucket_unit_nsec = 1000000000 / (rte_get_tsc_hz() >> bucket_size);
if (state->toggle == 0) {
display_table_init(stats, "Statistics per second");
} else {
display_table_init(stats, "Total statistics");
}
char title[64];
stats_max = display_table_add_col(stats);
snprintf(title, sizeof(title), " MAXIMUM(mic)");
display_column_init(stats_max, title, 11);
plog_info("Bucket unit is %d nsec, bucket size is %d, freq is %ld\n", bucket_unit_nsec, bucket_size, rte_get_tsc_hz());
uint32_t i = global_min_bucket_id, first = i, k = 0;
while ((i < LAT_BUCKET_COUNT) && (i <= global_max_bucket_id)) {
stats_latency_distr[k] = display_table_add_col(stats);
if (i < LAT_BUCKET_COUNT - group_size) {
snprintf(title, sizeof(title), "%d.%01d-%d.%01d", UNIT_INT(i), UNIT_FRACT(i), UNIT_INT(i + group_size), UNIT_FRACT(i + group_size));
} else {
snprintf(title, sizeof(title), "> %d.%01d", UNIT_INT(i), UNIT_FRACT(i));
}
display_column_init(stats_latency_distr[k++], title, 9);
i += group_size;
}
display_page_draw_frame(&display_page_latency_distr, n_tasks);
uint32_t count = 0;
lconf = NULL;
while (core_targ_next(&lconf, &targ, 0) == 0) {
if (strcmp(targ->task_init->mode_str, "lat") == 0) {
display_column_print_core_task(core_col, count, lconf, targ);
if (targ->id == 0)
display_column_print(name_col, count, "%s", lconf->name);
count++;
}
}
}
static void display_latency_distr_draw_stats(struct screen_state *state)
{
const uint32_t n_latency = stats_get_n_latency();
uint64_t *bucket;
uint32_t bucket_id = 0, min_bucket_id = LAT_BUCKET_COUNT - 1, max_bucket_id = 0;
struct time_unit tu;
for (uint32_t count = 0; count < n_latency; ++count) {
if (state->toggle == 0)
tu = stats_latency_get(count)->max.time;
else
tu = stats_latency_tot_get(count)->max.time;
display_column_print(stats_max, count, "%9lu.%03lu", tu.sec * 1000000 + tu.nsec / 1000, tu.nsec % 1000);
}
// Calculate min_bucket_id: id of 1st bucket with data for any tasks
// Calculate max_bucket_id: id of last bucket with data for any tasks
for (uint i = 0; i < LAT_BUCKET_COUNT; ++i) {
for (uint32_t count = 0; count < n_latency; ++count) {
if (state->toggle == 0)
bucket = stats_latency_get_bucket(count);
else
bucket = stats_latency_get_tot_bucket(count);
if (bucket[i] != 0) {
min_bucket_id = i;
break;
}
}
if (min_bucket_id != LAT_BUCKET_COUNT - 1)
break;
}
for (uint i = LAT_BUCKET_COUNT; i > 0; i--) {
for (uint32_t count = 0; count < n_latency; ++count) {
if (state->toggle == 0)
bucket = stats_latency_get_bucket(count);
else
bucket = stats_latency_get_tot_bucket(count);
if (bucket[i - 1] != 0) {
max_bucket_id = i - 1;
break;
}
}
if (max_bucket_id)
break;
}
if (max_bucket_id - min_bucket_id + 1 < global_nb_buckets_displayed) {
max_bucket_id = global_nb_buckets_displayed + min_bucket_id - 1;
}
if ((global_min_bucket_id != min_bucket_id) || (global_max_bucket_id != max_bucket_id)) {
global_min_bucket_id = min_bucket_id;
global_max_bucket_id = max_bucket_id;
// Calculate how many buckets must be grouped together
if (max_bucket_id - min_bucket_id + 1 > global_nb_buckets_displayed)
group_size = ceil(1.0 * (max_bucket_id - min_bucket_id + 1) / global_nb_buckets_displayed);
else
group_size = 1;
display_latency_distr_draw_frame(state);
display_renew();
plog_info("min_bucket_id = %d, max_bucket_id = %d\n", min_bucket_id, max_bucket_id);
}
for (uint32_t count = 0; count < n_latency; ++count) {
if (state->toggle == 0)
bucket = stats_latency_get_bucket(count);
else
bucket = stats_latency_get_tot_bucket(count);
uint32_t i = min_bucket_id, k = 0;
uint64_t nb = 0;
while ((i < LAT_BUCKET_COUNT) && (i <= global_max_bucket_id)){
for (uint32_t j = 0; j <= group_size; j++)
if (i + j < LAT_BUCKET_COUNT)
nb += bucket[i+j];
display_column_print(stats_latency_distr[k++], count, "%9lu", nb);
nb = 0;
i += group_size;
}
}
}
static int display_latency_distr_get_height(void)
{
return stats_get_n_latency();
}
static struct display_screen display_screen_latency_distr = {
.draw_frame = display_latency_distr_draw_frame,
.draw_stats = display_latency_distr_draw_stats,
.get_height = display_latency_distr_get_height,
.title = "latency_distr",
};
struct display_screen *display_latency_distr(void)
{
return &display_screen_latency_distr;
}
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