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dpdk-fm10k/app/test/test_hash_readwrite.c
Bruce Richardson a9de470cc7 test: move to app directory 
Since all other apps have been moved to the "app" folder, the autotest app
remains alone in the test folder. Rather than having an entire top-level
folder for this, we can move it back to where it all started in early
versions of DPDK - the "app/" folder.

This move has a couple of advantages:
* This reduces clutter at the top level of the project, due to one less
  folder.
* It eliminates the separate build task necessary for building the
  autotests using make "make test-build" which means that developers are
  less likely to miss something in their own compilation tests
* It re-aligns the final location of the test binary in the app folder when
  building with make with it's location in the source tree.

For meson builds, the autotest app is different from the other apps in that
it needs a series of different test cases defined for it for use by "meson
test". Therefore, it does not get built as part of the main loop in the
app folder, but gets built separately at the end.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
2019-02-26 15:29:27 +01:00

710 lines
17 KiB
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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018 Intel Corporation
*/
#include <inttypes.h>
#include <locale.h>
#include <rte_cycles.h>
#include <rte_hash.h>
#include <rte_hash_crc.h>
#include <rte_jhash.h>
#include <rte_launch.h>
#include <rte_malloc.h>
#include <rte_random.h>
#include <rte_spinlock.h>
#include "test.h"
#define RTE_RWTEST_FAIL 0
#define TOTAL_ENTRY (5*1024*1024)
#define TOTAL_INSERT (4.5*1024*1024)
#define TOTAL_INSERT_EXT (5*1024*1024)
#define NUM_TEST 3
unsigned int core_cnt[NUM_TEST] = {2, 4, 8};
unsigned int slave_core_ids[RTE_MAX_LCORE];
struct perf {
uint32_t single_read;
uint32_t single_write;
uint32_t read_only[NUM_TEST];
uint32_t write_only[NUM_TEST];
uint32_t read_write_r[NUM_TEST];
uint32_t read_write_w[NUM_TEST];
};
static struct perf htm_results, non_htm_results;
struct {
uint32_t *keys;
uint8_t *found;
uint32_t num_insert;
uint32_t rounded_tot_insert;
struct rte_hash *h;
} tbl_rw_test_param;
static rte_atomic64_t gcycles;
static rte_atomic64_t ginsertions;
static rte_atomic64_t gread_cycles;
static rte_atomic64_t gwrite_cycles;
static rte_atomic64_t greads;
static rte_atomic64_t gwrites;
static int
test_hash_readwrite_worker(__attribute__((unused)) void *arg)
{
uint64_t i, offset;
uint32_t lcore_id = rte_lcore_id();
uint64_t begin, cycles;
int *ret;
ret = rte_malloc(NULL, sizeof(int) *
tbl_rw_test_param.num_insert, 0);
for (i = 0; i < rte_lcore_count(); i++) {
if (slave_core_ids[i] == lcore_id)
break;
}
offset = tbl_rw_test_param.num_insert * i;
printf("Core #%d inserting and reading %d: %'"PRId64" - %'"PRId64"\n",
lcore_id, tbl_rw_test_param.num_insert,
offset, offset + tbl_rw_test_param.num_insert - 1);
begin = rte_rdtsc_precise();
for (i = offset; i < offset + tbl_rw_test_param.num_insert; i++) {
if (rte_hash_lookup(tbl_rw_test_param.h,
tbl_rw_test_param.keys + i) > 0)
break;
ret[i - offset] = rte_hash_add_key(tbl_rw_test_param.h,
tbl_rw_test_param.keys + i);
if (ret[i - offset] < 0)
break;
/* lookup a random key */
uint32_t rand = rte_rand() % (i + 1 - offset);
if (rte_hash_lookup(tbl_rw_test_param.h,
tbl_rw_test_param.keys + rand) != ret[rand])
break;
if (rte_hash_del_key(tbl_rw_test_param.h,
tbl_rw_test_param.keys + rand) != ret[rand])
break;
ret[rand] = rte_hash_add_key(tbl_rw_test_param.h,
tbl_rw_test_param.keys + rand);
if (ret[rand] < 0)
break;
if (rte_hash_lookup(tbl_rw_test_param.h,
tbl_rw_test_param.keys + rand) != ret[rand])
break;
}
cycles = rte_rdtsc_precise() - begin;
rte_atomic64_add(&gcycles, cycles);
rte_atomic64_add(&ginsertions, i - offset);
for (; i < offset + tbl_rw_test_param.num_insert; i++)
tbl_rw_test_param.keys[i] = RTE_RWTEST_FAIL;
rte_free(ret);
return 0;
}
static int
init_params(int use_ext, int use_htm, int use_jhash)
{
unsigned int i;
uint32_t *keys = NULL;
uint8_t *found = NULL;
struct rte_hash *handle;
struct rte_hash_parameters hash_params = {
.entries = TOTAL_ENTRY,
.key_len = sizeof(uint32_t),
.hash_func_init_val = 0,
.socket_id = rte_socket_id(),
};
if (use_jhash)
hash_params.hash_func = rte_jhash;
else
hash_params.hash_func = rte_hash_crc;
if (use_htm)
hash_params.extra_flag =
RTE_HASH_EXTRA_FLAGS_TRANS_MEM_SUPPORT |
RTE_HASH_EXTRA_FLAGS_RW_CONCURRENCY |
RTE_HASH_EXTRA_FLAGS_MULTI_WRITER_ADD;
else
hash_params.extra_flag =
RTE_HASH_EXTRA_FLAGS_RW_CONCURRENCY |
RTE_HASH_EXTRA_FLAGS_MULTI_WRITER_ADD;
if (use_ext)
hash_params.extra_flag |=
RTE_HASH_EXTRA_FLAGS_EXT_TABLE;
else
hash_params.extra_flag &=
~RTE_HASH_EXTRA_FLAGS_EXT_TABLE;
hash_params.name = "tests";
handle = rte_hash_create(&hash_params);
if (handle == NULL) {
printf("hash creation failed");
return -1;
}
tbl_rw_test_param.h = handle;
keys = rte_malloc(NULL, sizeof(uint32_t) * TOTAL_ENTRY, 0);
if (keys == NULL) {
printf("RTE_MALLOC failed\n");
goto err;
}
found = rte_zmalloc(NULL, sizeof(uint8_t) * TOTAL_ENTRY, 0);
if (found == NULL) {
printf("RTE_ZMALLOC failed\n");
goto err;
}
tbl_rw_test_param.keys = keys;
tbl_rw_test_param.found = found;
for (i = 0; i < TOTAL_ENTRY; i++)
keys[i] = i;
return 0;
err:
rte_free(keys);
rte_hash_free(handle);
return -1;
}
static int
test_hash_readwrite_functional(int use_ext, int use_htm)
{
unsigned int i;
const void *next_key;
void *next_data;
uint32_t iter = 0;
uint32_t duplicated_keys = 0;
uint32_t lost_keys = 0;
int use_jhash = 1;
int slave_cnt = rte_lcore_count() - 1;
uint32_t tot_insert = 0;
rte_atomic64_init(&gcycles);
rte_atomic64_clear(&gcycles);
rte_atomic64_init(&ginsertions);
rte_atomic64_clear(&ginsertions);
if (init_params(use_ext, use_htm, use_jhash) != 0)
goto err;
if (use_ext)
tot_insert = TOTAL_INSERT_EXT;
else
tot_insert = TOTAL_INSERT;
tbl_rw_test_param.num_insert =
tot_insert / slave_cnt;
tbl_rw_test_param.rounded_tot_insert =
tbl_rw_test_param.num_insert
* slave_cnt;
printf("++++++++Start function tests:+++++++++\n");
/* Fire all threads. */
rte_eal_mp_remote_launch(test_hash_readwrite_worker,
NULL, SKIP_MASTER);
rte_eal_mp_wait_lcore();
while (rte_hash_iterate(tbl_rw_test_param.h, &next_key,
&next_data, &iter) >= 0) {
/* Search for the key in the list of keys added .*/
i = *(const uint32_t *)next_key;
tbl_rw_test_param.found[i]++;
}
for (i = 0; i < tbl_rw_test_param.rounded_tot_insert; i++) {
if (tbl_rw_test_param.keys[i] != RTE_RWTEST_FAIL) {
if (tbl_rw_test_param.found[i] > 1) {
duplicated_keys++;
break;
}
if (tbl_rw_test_param.found[i] == 0) {
lost_keys++;
printf("key %d is lost\n", i);
break;
}
}
}
if (duplicated_keys > 0) {
printf("%d key duplicated\n", duplicated_keys);
goto err_free;
}
if (lost_keys > 0) {
printf("%d key lost\n", lost_keys);
goto err_free;
}
printf("No key corrupted during read-write test.\n");
unsigned long long int cycles_per_insertion =
rte_atomic64_read(&gcycles) /
rte_atomic64_read(&ginsertions);
printf("cycles per insertion and lookup: %llu\n", cycles_per_insertion);
rte_free(tbl_rw_test_param.found);
rte_free(tbl_rw_test_param.keys);
rte_hash_free(tbl_rw_test_param.h);
printf("+++++++++Complete function tests+++++++++\n");
return 0;
err_free:
rte_free(tbl_rw_test_param.found);
rte_free(tbl_rw_test_param.keys);
rte_hash_free(tbl_rw_test_param.h);
err:
return -1;
}
static int
test_rw_reader(void *arg)
{
uint64_t i;
uint64_t begin, cycles;
uint64_t read_cnt = (uint64_t)((uintptr_t)arg);
begin = rte_rdtsc_precise();
for (i = 0; i < read_cnt; i++) {
void *data;
rte_hash_lookup_data(tbl_rw_test_param.h,
tbl_rw_test_param.keys + i,
&data);
if (i != (uint64_t)(uintptr_t)data) {
printf("lookup find wrong value %"PRIu64","
"%"PRIu64"\n", i,
(uint64_t)(uintptr_t)data);
break;
}
}
cycles = rte_rdtsc_precise() - begin;
rte_atomic64_add(&gread_cycles, cycles);
rte_atomic64_add(&greads, i);
return 0;
}
static int
test_rw_writer(void *arg)
{
uint64_t i;
uint32_t lcore_id = rte_lcore_id();
uint64_t begin, cycles;
int ret;
uint64_t start_coreid = (uint64_t)(uintptr_t)arg;
uint64_t offset;
for (i = 0; i < rte_lcore_count(); i++) {
if (slave_core_ids[i] == lcore_id)
break;
}
offset = TOTAL_INSERT / 2 + (i - (start_coreid)) *
tbl_rw_test_param.num_insert;
begin = rte_rdtsc_precise();
for (i = offset; i < offset + tbl_rw_test_param.num_insert; i++) {
ret = rte_hash_add_key_data(tbl_rw_test_param.h,
tbl_rw_test_param.keys + i,
(void *)((uintptr_t)i));
if (ret < 0) {
printf("writer failed %"PRIu64"\n", i);
break;
}
}
cycles = rte_rdtsc_precise() - begin;
rte_atomic64_add(&gwrite_cycles, cycles);
rte_atomic64_add(&gwrites, tbl_rw_test_param.num_insert);
return 0;
}
static int
test_hash_readwrite_perf(struct perf *perf_results, int use_htm,
int reader_faster)
{
unsigned int n;
int ret;
int start_coreid;
uint64_t i, read_cnt;
const void *next_key;
void *next_data;
uint32_t iter;
int use_jhash = 0;
uint32_t duplicated_keys = 0;
uint32_t lost_keys = 0;
uint64_t start = 0, end = 0;
rte_atomic64_init(&greads);
rte_atomic64_init(&gwrites);
rte_atomic64_clear(&gwrites);
rte_atomic64_clear(&greads);
rte_atomic64_init(&gread_cycles);
rte_atomic64_clear(&gread_cycles);
rte_atomic64_init(&gwrite_cycles);
rte_atomic64_clear(&gwrite_cycles);
if (init_params(0, use_htm, use_jhash) != 0)
goto err;
/*
* Do a readers finish faster or writers finish faster test.
* When readers finish faster, we timing the readers, and when writers
* finish faster, we timing the writers.
* Divided by 10 or 2 is just experimental values to vary the workload
* of readers.
*/
if (reader_faster) {
printf("++++++Start perf test: reader++++++++\n");
read_cnt = TOTAL_INSERT / 10;
} else {
printf("++++++Start perf test: writer++++++++\n");
read_cnt = TOTAL_INSERT / 2;
}
/* We first test single thread performance */
start = rte_rdtsc_precise();
/* Insert half of the keys */
for (i = 0; i < TOTAL_INSERT / 2; i++) {
ret = rte_hash_add_key_data(tbl_rw_test_param.h,
tbl_rw_test_param.keys + i,
(void *)((uintptr_t)i));
if (ret < 0) {
printf("Failed to insert half of keys\n");
goto err_free;
}
}
end = rte_rdtsc_precise() - start;
perf_results->single_write = end / i;
start = rte_rdtsc_precise();
for (i = 0; i < read_cnt; i++) {
void *data;
rte_hash_lookup_data(tbl_rw_test_param.h,
tbl_rw_test_param.keys + i,
&data);
if (i != (uint64_t)(uintptr_t)data) {
printf("lookup find wrong value"
" %"PRIu64",%"PRIu64"\n", i,
(uint64_t)(uintptr_t)data);
break;
}
}
end = rte_rdtsc_precise() - start;
perf_results->single_read = end / i;
for (n = 0; n < NUM_TEST; n++) {
unsigned int tot_slave_lcore = rte_lcore_count() - 1;
if (tot_slave_lcore < core_cnt[n] * 2)
goto finish;
rte_atomic64_clear(&greads);
rte_atomic64_clear(&gread_cycles);
rte_atomic64_clear(&gwrites);
rte_atomic64_clear(&gwrite_cycles);
rte_hash_reset(tbl_rw_test_param.h);
tbl_rw_test_param.num_insert = TOTAL_INSERT / 2 / core_cnt[n];
tbl_rw_test_param.rounded_tot_insert = TOTAL_INSERT / 2 +
tbl_rw_test_param.num_insert *
core_cnt[n];
for (i = 0; i < TOTAL_INSERT / 2; i++) {
ret = rte_hash_add_key_data(tbl_rw_test_param.h,
tbl_rw_test_param.keys + i,
(void *)((uintptr_t)i));
if (ret < 0) {
printf("Failed to insert half of keys\n");
goto err_free;
}
}
/* Then test multiple thread case but only all reads or
* all writes
*/
/* Test only reader cases */
for (i = 0; i < core_cnt[n]; i++)
rte_eal_remote_launch(test_rw_reader,
(void *)(uintptr_t)read_cnt,
slave_core_ids[i]);
rte_eal_mp_wait_lcore();
start_coreid = i;
/* Test only writer cases */
for (; i < core_cnt[n] * 2; i++)
rte_eal_remote_launch(test_rw_writer,
(void *)((uintptr_t)start_coreid),
slave_core_ids[i]);
rte_eal_mp_wait_lcore();
if (reader_faster) {
unsigned long long int cycles_per_insertion =
rte_atomic64_read(&gread_cycles) /
rte_atomic64_read(&greads);
perf_results->read_only[n] = cycles_per_insertion;
printf("Reader only: cycles per lookup: %llu\n",
cycles_per_insertion);
}
else {
unsigned long long int cycles_per_insertion =
rte_atomic64_read(&gwrite_cycles) /
rte_atomic64_read(&gwrites);
perf_results->write_only[n] = cycles_per_insertion;
printf("Writer only: cycles per writes: %llu\n",
cycles_per_insertion);
}
rte_atomic64_clear(&greads);
rte_atomic64_clear(&gread_cycles);
rte_atomic64_clear(&gwrites);
rte_atomic64_clear(&gwrite_cycles);
rte_hash_reset(tbl_rw_test_param.h);
for (i = 0; i < TOTAL_INSERT / 2; i++) {
ret = rte_hash_add_key_data(tbl_rw_test_param.h,
tbl_rw_test_param.keys + i,
(void *)((uintptr_t)i));
if (ret < 0) {
printf("Failed to insert half of keys\n");
goto err_free;
}
}
start_coreid = core_cnt[n];
if (reader_faster) {
for (i = core_cnt[n]; i < core_cnt[n] * 2; i++)
rte_eal_remote_launch(test_rw_writer,
(void *)((uintptr_t)start_coreid),
slave_core_ids[i]);
for (i = 0; i < core_cnt[n]; i++)
rte_eal_remote_launch(test_rw_reader,
(void *)(uintptr_t)read_cnt,
slave_core_ids[i]);
} else {
for (i = 0; i < core_cnt[n]; i++)
rte_eal_remote_launch(test_rw_reader,
(void *)(uintptr_t)read_cnt,
slave_core_ids[i]);
for (; i < core_cnt[n] * 2; i++)
rte_eal_remote_launch(test_rw_writer,
(void *)((uintptr_t)start_coreid),
slave_core_ids[i]);
}
rte_eal_mp_wait_lcore();
iter = 0;
memset(tbl_rw_test_param.found, 0, TOTAL_ENTRY);
while (rte_hash_iterate(tbl_rw_test_param.h,
&next_key, &next_data, &iter) >= 0) {
/* Search for the key in the list of keys added .*/
i = *(const uint32_t *)next_key;
tbl_rw_test_param.found[i]++;
}
for (i = 0; i < tbl_rw_test_param.rounded_tot_insert; i++) {
if (tbl_rw_test_param.keys[i] != RTE_RWTEST_FAIL) {
if (tbl_rw_test_param.found[i] > 1) {
duplicated_keys++;
break;
}
if (tbl_rw_test_param.found[i] == 0) {
lost_keys++;
printf("key %"PRIu64" is lost\n", i);
break;
}
}
}
if (duplicated_keys > 0) {
printf("%d key duplicated\n", duplicated_keys);
goto err_free;
}
if (lost_keys > 0) {
printf("%d key lost\n", lost_keys);
goto err_free;
}
printf("No key corrupted during read-write test.\n");
if (reader_faster) {
unsigned long long int cycles_per_insertion =
rte_atomic64_read(&gread_cycles) /
rte_atomic64_read(&greads);
perf_results->read_write_r[n] = cycles_per_insertion;
printf("Read-write cycles per lookup: %llu\n",
cycles_per_insertion);
}
else {
unsigned long long int cycles_per_insertion =
rte_atomic64_read(&gwrite_cycles) /
rte_atomic64_read(&gwrites);
perf_results->read_write_w[n] = cycles_per_insertion;
printf("Read-write cycles per writes: %llu\n",
cycles_per_insertion);
}
}
finish:
rte_free(tbl_rw_test_param.found);
rte_free(tbl_rw_test_param.keys);
rte_hash_free(tbl_rw_test_param.h);
return 0;
err_free:
rte_free(tbl_rw_test_param.found);
rte_free(tbl_rw_test_param.keys);
rte_hash_free(tbl_rw_test_param.h);
err:
return -1;
}
static int
test_hash_readwrite_main(void)
{
/*
* Variables used to choose different tests.
* use_htm indicates if hardware transactional memory should be used.
* reader_faster indicates if the reader threads should finish earlier
* than writer threads. This is to timing either reader threads or
* writer threads for performance numbers.
*/
int use_htm, use_ext, reader_faster;
unsigned int i = 0, core_id = 0;
if (rte_lcore_count() <= 2) {
printf("More than two lcores are required "
"to do read write test\n");
return -1;
}
RTE_LCORE_FOREACH_SLAVE(core_id) {
slave_core_ids[i] = core_id;
i++;
}
setlocale(LC_NUMERIC, "");
if (rte_tm_supported()) {
printf("Hardware transactional memory (lock elision) "
"is supported\n");
printf("Test read-write with Hardware transactional memory\n");
use_htm = 1;
use_ext = 0;
if (test_hash_readwrite_functional(use_ext, use_htm) < 0)
return -1;
use_ext = 1;
if (test_hash_readwrite_functional(use_ext, use_htm) < 0)
return -1;
reader_faster = 1;
if (test_hash_readwrite_perf(&htm_results, use_htm,
reader_faster) < 0)
return -1;
reader_faster = 0;
if (test_hash_readwrite_perf(&htm_results, use_htm,
reader_faster) < 0)
return -1;
} else {
printf("Hardware transactional memory (lock elision) "
"is NOT supported\n");
}
printf("Test read-write without Hardware transactional memory\n");
use_htm = 0;
use_ext = 0;
if (test_hash_readwrite_functional(use_ext, use_htm) < 0)
return -1;
use_ext = 1;
if (test_hash_readwrite_functional(use_ext, use_htm) < 0)
return -1;
reader_faster = 1;
if (test_hash_readwrite_perf(&non_htm_results, use_htm,
reader_faster) < 0)
return -1;
reader_faster = 0;
if (test_hash_readwrite_perf(&non_htm_results, use_htm,
reader_faster) < 0)
return -1;
printf("================\n");
printf("Results summary:\n");
printf("================\n");
printf("single read: %u\n", htm_results.single_read);
printf("single write: %u\n", htm_results.single_write);
for (i = 0; i < NUM_TEST; i++) {
printf("+++ core_cnt: %u +++\n", core_cnt[i]);
printf("HTM:\n");
printf(" read only: %u\n", htm_results.read_only[i]);
printf(" write only: %u\n", htm_results.write_only[i]);
printf(" read-write read: %u\n", htm_results.read_write_r[i]);
printf(" read-write write: %u\n", htm_results.read_write_w[i]);
printf("non HTM:\n");
printf(" read only: %u\n", non_htm_results.read_only[i]);
printf(" write only: %u\n", non_htm_results.write_only[i]);
printf(" read-write read: %u\n",
non_htm_results.read_write_r[i]);
printf(" read-write write: %u\n",
non_htm_results.read_write_w[i]);
}
return 0;
}
REGISTER_TEST_COMMAND(hash_readwrite_autotest, test_hash_readwrite_main);
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