Crash_Override/OVMS3-idf
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

mbedtls: add SHA performance test

Browse source 
Results with this revision:

SHA256 rate 2.599MB/sec Debug 240MHz SW
SHA256 rate 1.147MB/sec Release 80MHz SW
SHA256 rate 3.469MB/sec Release 240MHz SW
SHA256 rate 2.687MB/sec Release 240MHz SW + PSRAM workaround

SHA256 rate 9.433MB/sec Debug 240MHz HW rev1
SHA256 rate 3.727MB/sec Release 80MHz HW rev1
SHA256 rate 10.961MB/sec Release 240MHz HW rev1
SHA256 rate 9.966MB/sec Release 240MHz HW rev1 + PRAM workaround

SHA256 rate 10.974MB/sec Debug 240MHz HW rev3
SHA256 rate 4.362MB/sec Release 80MHz HW rev3
SHA256 rate 13.207MB/sec Release 240MHz HW rev3

Debug = Og, assertions enabled
Release = O2, assertions disabled
This commit is contained in:
Ivan Grokhotkov 2019-10-11 07:57:26 +02:00 committed by bot
parent 3ba9eae86c
commit 20d435c561
3 changed files with 61 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
components/idf_test/include/idf_performance.h
View file

@ -30,4 +30,6 @@
// floating point instructions per divide and per sqrt (configured for worst-case with PSRAM workaround)
#define IDF_PERFORMANCE_MAX_ESP32_CYCLES_PER_DIV 70
#define IDF_PERFORMANCE_MAX_ESP32_CYCLES_PER_SQRT 140
// SHA256 hardware throughput at 240MHz, threshold set lower than worst case
#define IDF_PERFORMANCE_MIN_SHA256_THROUGHPUT_MBSEC 9.0

2
components/mbedtls/test/CMakeLists.txt
View file

@ -1,6 +1,6 @@
idf_component_register(SRC_DIRS "."
INCLUDE_DIRS "."
REQUIRES unity test_utils mbedtls)
REQUIRES unity test_utils mbedtls libsodium)
idf_component_get_property(mbedtls mbedtls COMPONENT_LIB)
target_compile_definitions(${mbedtls} INTERFACE "-DMBEDTLS_DEPRECATED_WARNING")

58
components/mbedtls/test/test_sha_perf.c Normal file
View file

@ -0,0 +1,58 @@
/* mbedTLS SHA performance test
*/
#include <string.h>
#include <stdio.h>
#include <stdbool.h>
#include "mbedtls/sha256.h"
#include "unity.h"
#include "sdkconfig.h"
#include "esp_timer.h"
#include "esp_heap_caps.h"
#include "test_utils.h"
#include "sodium/utils.h"
TEST_CASE("mbedtls SHA performance", "[aes]")
{
const unsigned CALLS = 256;
const unsigned CALL_SZ = 16*1024;
mbedtls_sha256_context sha256_ctx;
int64_t start, end;
unsigned char sha256[32];
// allocate internal memory
uint8_t *buf = heap_caps_malloc(CALL_SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL);
TEST_ASSERT_NOT_NULL(buf);
memset(buf, 0x55, CALL_SZ);
mbedtls_sha256_init(&sha256_ctx);
start = esp_timer_get_time();
TEST_ASSERT_EQUAL(0, mbedtls_sha256_starts_ret(&sha256_ctx, false));
for (int c = 0; c < CALLS; c++) {
TEST_ASSERT_EQUAL(0, mbedtls_sha256_update_ret(&sha256_ctx, buf, CALL_SZ));
}
TEST_ASSERT_EQUAL(0, mbedtls_sha256_finish_ret(&sha256_ctx, sha256));
end = esp_timer_get_time();
free(buf);
mbedtls_sha256_free(&sha256_ctx);
/* Check the result. Reference value can be calculated using:
* dd if=/dev/zero bs=$((16*1024)) count=256 | tr '\000' '\125' | sha256sum
*/
const char* expected_hash = "c88df2638fb9699abaad05780fa5e0fdb6058f477069040eac8bed3231286275";
char hash_str[sizeof(sha256) * 2 + 1];
sodium_bin2hex(hash_str, sizeof(hash_str), sha256, sizeof(sha256));
TEST_ASSERT_EQUAL_STRING(expected_hash, hash_str);
float usecs = end - start;
// bytes/usec = MB/sec
float mb_sec = (CALL_SZ * CALLS) / usecs;
printf("SHA256 rate %.3fMB/sec\n", mb_sec);
#ifdef CONFIG_MBEDTLS_HARDWARE
// Don't put a hard limit on software SHA performance
TEST_PERFORMANCE_GREATER_THAN(SHA256_THROUGHPUT_MBSEC, "%.3fMB/sec", mb_sec);
#endif
}