72 lines
2.5 KiB
C
72 lines
2.5 KiB
C
/* perfmon (performance monitor) example
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "esp_timer.h"
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#include "esp_log.h"
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#include "esp_sleep.h"
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#include "sdkconfig.h"
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#include "perfmon.h"
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static const char* TAG = "example";
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static void exec_test_function(void *params)
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{
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for (int i = 0 ; i < 100 ; i++) {
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__asm__ __volatile__(" nop");
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}
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}
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// Table with dedicated performance counters
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static uint32_t pm_check_table[] = {
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XTPERF_CNT_CYCLES, XTPERF_MASK_CYCLES, // total cycles
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XTPERF_CNT_INSN, XTPERF_MASK_INSN_ALL, // total instructions
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XTPERF_CNT_D_LOAD_U1, XTPERF_MASK_D_LOAD_LOCAL_MEM, // Mem read
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XTPERF_CNT_D_STORE_U1, XTPERF_MASK_D_STORE_LOCAL_MEM, // Mem write
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XTPERF_CNT_BUBBLES, XTPERF_MASK_BUBBLES_ALL &(~XTPERF_MASK_BUBBLES_R_HOLD_REG_DEP), // wait for other reasons
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XTPERF_CNT_BUBBLES, XTPERF_MASK_BUBBLES_R_HOLD_REG_DEP, // Wait for register dependency
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XTPERF_CNT_OVERFLOW, XTPERF_MASK_OVERFLOW, // Last test cycle
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};
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#define TOTAL_CALL_AMOUNT 200
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#define PERFMON_TRACELEVEL -1 // -1 - will ignore trace level
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void app_main(void)
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{
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ESP_LOGI(TAG, "Start");
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ESP_LOGI(TAG, "Start test with printing all available statistic");
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xtensa_perfmon_config_t pm_config = {};
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pm_config.counters_size = sizeof(xtensa_perfmon_select_mask_all) / sizeof(uint32_t) / 2;
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pm_config.select_mask = xtensa_perfmon_select_mask_all;
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pm_config.repeat_count = TOTAL_CALL_AMOUNT;
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pm_config.max_deviation = 1;
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pm_config.call_function = exec_test_function;
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pm_config.callback = xtensa_perfmon_view_cb;
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pm_config.callback_params = stdout;
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pm_config.tracelevel = PERFMON_TRACELEVEL;
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xtensa_perfmon_exec(&pm_config);
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ESP_LOGI(TAG, "Start test with user defined statistic");
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pm_config.counters_size = sizeof(pm_check_table) / sizeof(uint32_t) / 2;
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pm_config.select_mask = pm_check_table;
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pm_config.repeat_count = TOTAL_CALL_AMOUNT;
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pm_config.max_deviation = 1;
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pm_config.call_function = exec_test_function;
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pm_config.callback = xtensa_perfmon_view_cb;
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pm_config.callback_params = stdout;
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pm_config.tracelevel = PERFMON_TRACELEVEL;
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xtensa_perfmon_exec(&pm_config);
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ESP_LOGI(TAG, "The End");
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}
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