diff options
Diffstat (limited to 'crypto-perf/crypto.cpp')
| -rw-r--r-- | crypto-perf/crypto.cpp | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/crypto-perf/crypto.cpp b/crypto-perf/crypto.cpp new file mode 100644 index 00000000..2cd2709f --- /dev/null +++ b/crypto-perf/crypto.cpp @@ -0,0 +1,170 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/time.h> +#include <sched.h> +#include <sys/resource.h> +#include <ctype.h> +#define USEC_PER_SEC 1000000ULL +#define MAX_COUNT 1000000000ULL +#define NUM_INSTS_GARBAGE 18 + +// Contains information about benchmark options. +typedef struct { + int cpu_to_lock; + int locked_freq; +} command_data_t; + +void usage() { + printf("--------------------------------------------------------------------------------\n"); + printf("Usage:"); + printf(" crypto [--cpu_to_lock CPU] [--locked_freq FREQ_IN_KHZ]\n\n"); + printf("!!!!!!Lock the desired core to a desired frequency before invoking this benchmark.\n"); + printf( + "Hint: Set scaling_max_freq=scaling_min_freq=FREQ_IN_KHZ. FREQ_IN_KHZ " + "can be obtained from scaling_available_freq\n"); + printf("--------------------------------------------------------------------------------\n"); +} + +int processOptions(int argc, char **argv, command_data_t *cmd_data) { + // Initialize the command_flags. + cmd_data->cpu_to_lock = 0; + cmd_data->locked_freq = 1; + for (int i = 1; i < argc; i++) { + if (argv[i][0] == '-') { + int *save_value = NULL; + if (strcmp(argv[i], "--cpu_to_lock") == 0) { + save_value = &cmd_data->cpu_to_lock; + } else if (strcmp(argv[i], "--locked_freq") == 0) { + save_value = &cmd_data->locked_freq; + } else { + printf("Unknown option %s\n", argv[i]); + return -1; + } + if (save_value) { + // Checking both characters without a strlen() call should be + // safe since as long as the argument exists, one character will + // be present (\0). And if the first character is '-', then + // there will always be a second character (\0 again). + if (i == argc - 1 || + (argv[i + 1][0] == '-' && !isdigit(argv[i + 1][1]))) { + printf("The option %s requires one argument.\n", argv[i]); + return -1; + } + *save_value = (int)strtol(argv[++i], NULL, 0); + } + } + } + return 0; +} +/* Performs encryption on garbage values. In Cortex-A57 r0p1 and later + * revisions, pairs of dependent AESE/AESMC and AESD/AESIMC instructions are + * higher performance when adjacent, and in the described order below. */ +void garbage_encrypt() { + __asm__ __volatile__( + "aese v0.16b, v4.16b ;" + "aesmc v0.16b, v0.16b ;" + "aese v1.16b, v4.16b ;" + "aesmc v1.16b, v1.16b ;" + "aese v2.16b, v4.16b ;" + "aesmc v2.16b, v2.16b ;" + "aese v0.16b, v5.16b ;" + "aesmc v0.16b, v0.16b ;" + "aese v1.16b, v5.16b ;" + "aesmc v1.16b, v1.16b ;" + "aese v2.16b, v5.16b ;" + "aesmc v2.16b, v2.16b ;" + "aese v0.16b, v6.16b ;" + "aesmc v0.16b, v0.16b ;" + "aese v1.16b, v6.16b ;" + "aesmc v1.16b, v1.16b ;" + "aese v2.16b, v6.16b ;" + "aesmc v2.16b, v2.16b ;"); +} + +void garbage_decrypt() { + __asm__ __volatile__( + "aesd v0.16b, v4.16b ;" + "aesimc v0.16b, v0.16b ;" + "aesd v1.16b, v4.16b ;" + "aesimc v1.16b, v1.16b ;" + "aesd v2.16b, v4.16b ;" + "aesimc v2.16b, v2.16b ;" + "aesd v0.16b, v5.16b ;" + "aesimc v0.16b, v0.16b ;" + "aesd v1.16b, v5.16b ;" + "aesimc v1.16b, v1.16b ;" + "aesd v2.16b, v5.16b ;" + "aesimc v2.16b, v2.16b ;" + "aesd v0.16b, v6.16b ;" + "aesimc v0.16b, v0.16b ;" + "aesd v1.16b, v6.16b ;" + "aesimc v1.16b, v1.16b ;" + "aesd v2.16b, v6.16b ;" + "aesimc v2.16b, v2.16b ;"); +} + + +int main(int argc, char **argv) { + usage(); + command_data_t cmd_data; + + if(processOptions(argc, argv, &cmd_data) == -1) { + usage(); + return -1; + } + unsigned long long count = 0; + struct timeval begin_time, end_time, elapsed_time; + cpu_set_t cpuset; + CPU_ZERO(&cpuset); + CPU_SET(cmd_data.cpu_to_lock, &cpuset); + if (sched_setaffinity(0, sizeof(cpuset), &cpuset) != 0) { + perror("sched_setaffinity failed"); + return false; + } + gettimeofday(&begin_time, NULL); + while (count < MAX_COUNT) { + garbage_encrypt(); + count++; + } + gettimeofday(&end_time, NULL); + timersub(&end_time, &begin_time, &elapsed_time); + fprintf(stderr, "encrypt: %llu us\n", + elapsed_time.tv_sec * USEC_PER_SEC + elapsed_time.tv_usec); + fprintf(stderr, "encrypt instructions: %llu\n", + MAX_COUNT * NUM_INSTS_GARBAGE); + fprintf(stderr, "encrypt instructions per second: %f\n", + (float)(MAX_COUNT * NUM_INSTS_GARBAGE * USEC_PER_SEC) / + (elapsed_time.tv_sec * USEC_PER_SEC + elapsed_time.tv_usec)); + if (cmd_data.locked_freq != 0) { + fprintf(stderr, "encrypt instructions per cycle: %f\n", + (float)(MAX_COUNT * NUM_INSTS_GARBAGE * USEC_PER_SEC) / + ((elapsed_time.tv_sec * USEC_PER_SEC + elapsed_time.tv_usec) * + 1000 * cmd_data.locked_freq)); + } + printf("--------------------------------------------------------------------------------\n"); + + count = 0; + gettimeofday(&begin_time, NULL); + while (count < MAX_COUNT) { + garbage_decrypt(); + count++; + } + gettimeofday(&end_time, NULL); + timersub(&end_time, &begin_time, &elapsed_time); + fprintf(stderr, "decrypt: %llu us\n", + elapsed_time.tv_sec * USEC_PER_SEC + elapsed_time.tv_usec); + fprintf(stderr, "decrypt instructions: %llu\n", + MAX_COUNT * NUM_INSTS_GARBAGE); + fprintf(stderr, "decrypt instructions per second: %f\n", + (float)(MAX_COUNT * NUM_INSTS_GARBAGE * USEC_PER_SEC) / + (elapsed_time.tv_sec * USEC_PER_SEC + elapsed_time.tv_usec)); + if (cmd_data.locked_freq != 0) { + fprintf(stderr, "decrypt instructions per cycle: %f\n", + (float)(MAX_COUNT * NUM_INSTS_GARBAGE * USEC_PER_SEC) / + ((elapsed_time.tv_sec * USEC_PER_SEC + elapsed_time.tv_usec) * + 1000 * cmd_data.locked_freq)); + } + return 0; +} |