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btrfs-progs: hash-speedtest: add accelerated BLAKE2 implementations 

Benchmark all accelerated implementations if the CPU supports them. Set
the level before each test, expecting that the implementation switches
the implementation dynamically.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2023-02-09 02:54:35 +01:00
parent 23cb9771bc
commit 7d1353fa01
1 changed files with 18 additions and 1 deletions
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19
crypto/hash-speedtest.c
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@ -29,6 +29,7 @@
#include "crypto/sha.h"
#include "crypto/blake2.h"
#include "common/messages.h"
#include "common/cpu-utils.h"
#ifdef __x86_64__
static const int cycles_supported = 1;
@ -181,16 +182,26 @@ int main(int argc, char **argv) {
int digest_size;
u64 cycles;
u64 time;
unsigned long cpu_flag;
} contestants[] = {
{ .name = "NULL-NOP", .digest = hash_null_nop, .digest_size = 32 },
{ .name = "NULL-MEMCPY", .digest = hash_null_memcpy, .digest_size = 32 },
{ .name = "CRC32C", .digest = hash_crc32c, .digest_size = 4 },
{ .name = "XXHASH", .digest = hash_xxhash, .digest_size = 8 },
{ .name = "SHA256", .digest = hash_sha256, .digest_size = 32 },
{ .name = "BLAKE2", .digest = hash_blake2b, .digest_size = 32 },
{ .name = "BLAKE2-ref", .digest = hash_blake2b, .digest_size = 32 },
{ .name = "BLAKE2-SSE2", .digest = hash_blake2b, .digest_size = 32,
.cpu_flag = CPU_FLAG_SSE2 },
{ .name = "BLAKE2-SSE41", .digest = hash_blake2b, .digest_size = 32,
.cpu_flag = CPU_FLAG_SSE41 },
{ .name = "BLAKE2-AVX2", .digest = hash_blake2b, .digest_size = 32,
.cpu_flag = CPU_FLAG_AVX2 },
};
int units = UNITS_CYCLES;
cpu_detect_flags();
cpu_print_flags();
optind = 0;
while (1) {
static const struct option long_options[] = {
@ -250,9 +261,14 @@ int main(int argc, char **argv) {
u64 tstart, tend;
u64 total = 0;
if (c->cpu_flag != 0 && !cpu_has_feature(c->cpu_flag)) {
printf("%12s: no CPU support\n", c->name);
continue;
}
printf("%12s: ", c->name);
fflush(stdout);
cpu_set_level(c->cpu_flag);
tstart = get_time();
start = get_cycles(units);
for (iter = 0; iter < iterations; iter++) {
@ -264,6 +280,7 @@ int main(int argc, char **argv) {
tend = get_time();
c->cycles = end - start;
c->time = tend - tstart;
cpu_reset_level();
if (units == UNITS_CYCLES || units == UNITS_PERF)
total = c->cycles;