There are many high-performance DMA devices supported in DPDK now, and
these DMA devices can also be integrated into other modules of DPDK as
accelerators, such as Vhost. Before integrating DMA into applications,
developers need to know the performance of these DMA devices in various
scenarios and the performance of CPUs in the same scenario, such as
different buffer lengths. Only in this way can we know the target
performance of the application accelerated by using them. This patch
introduces a high-performance testing tool, which supports comparing the
performance of CPU and DMA in different scenarios automatically with a
pre-set config file. Memory Copy performance test are supported for now.
Signed-off-by: Cheng Jiang <cheng1.ji...@intel.com>
Signed-off-by: Jiayu Hu <jiayu...@intel.com>
Signed-off-by: Yuan Wang <yuanx.w...@intel.com>
Acked-by: Morten Brørup <m...@smartsharesystems.com>
---
app/meson.build | 1 +
app/test-dma-perf/benchmark.c | 467 ++++++++++++++++++++++++++++++++++
app/test-dma-perf/config.ini | 56 ++++
app/test-dma-perf/main.c | 445 ++++++++++++++++++++++++++++++++
app/test-dma-perf/main.h | 56 ++++
app/test-dma-perf/meson.build | 17 ++
6 files changed, 1042 insertions(+)
create mode 100644 app/test-dma-perf/benchmark.c
create mode 100644 app/test-dma-perf/config.ini
create mode 100644 app/test-dma-perf/main.c
create mode 100644 app/test-dma-perf/main.h
create mode 100644 app/test-dma-perf/meson.build
diff --git a/app/meson.build b/app/meson.build
index e32ea4bd5c..514cb2f7b2 100644
--- a/app/meson.build
+++ b/app/meson.build
@@ -19,6 +19,7 @@ apps = [
'test-cmdline',
'test-compress-perf',
'test-crypto-perf',
+ 'test-dma-perf',
'test-eventdev',
'test-fib',
'test-flow-perf',
diff --git a/app/test-dma-perf/benchmark.c b/app/test-dma-perf/benchmark.c
new file mode 100644
index 0000000000..36e3413bdc
--- /dev/null
+++ b/app/test-dma-perf/benchmark.c
@@ -0,0 +1,467 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Intel Corporation
+ */
+
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <rte_time.h>
+#include <rte_mbuf.h>
+#include <rte_dmadev.h>
+#include <rte_malloc.h>
+#include <rte_lcore.h>
+
+#include "main.h"
+
+#define MAX_DMA_CPL_NB 255
+
+#define TEST_WAIT_U_SECOND 10000
+
+#define CSV_LINE_DMA_FMT "Scenario %u,%u,%u,%u,%u,%u,%" PRIu64 ",%.3lf,%.3lf\n"
+#define CSV_LINE_CPU_FMT "Scenario %u,%u,NA,%u,%u,%u,%" PRIu64 ",%.3lf,%.3lf\n"
+
+struct worker_info {
+ bool ready_flag;
+ bool start_flag;
+ bool stop_flag;
+ uint32_t total_cpl;
+ uint32_t test_cpl;
+};
+
+struct lcore_params {
+ uint8_t scenario_id;
+ unsigned int lcore_id;
+ uint16_t worker_id;
+ uint16_t dev_id;
+ uint32_t nr_buf;
+ uint16_t kick_batch;
+ uint32_t buf_size;
+ uint16_t test_secs;
+ struct rte_mbuf **srcs;
+ struct rte_mbuf **dsts;
+ struct worker_info worker_info;
+};
+
+static struct rte_mempool *src_pool;
+static struct rte_mempool *dst_pool;
+
+static volatile struct lcore_params *worker_params[MAX_WORKER_NB];
+
+uint16_t dmadev_ids[MAX_WORKER_NB];
+uint32_t nb_dmadevs;
+
+
+#define PRINT_ERR(...) print_err(__func__, __LINE__, __VA_ARGS__)
+
+static inline int
+__rte_format_printf(3, 4)
+print_err(const char *func, int lineno, const char *format, ...)
+{
+ va_list ap;
+ int ret;
+
+ ret = fprintf(stderr, "In %s:%d - ", func, lineno);
+ va_start(ap, format);
+ ret += vfprintf(stderr, format, ap);
+ va_end(ap);
+
+ return ret;
+}
+
+static inline void
+calc_result(uint32_t buf_size, uint32_t nr_buf, uint16_t nb_workers, uint16_t
test_secs,
+ uint32_t total_cnt, uint32_t *memory, uint32_t
*ave_cycle,
+ float *bandwidth, float *mops)
+{
+ *memory = (buf_size * (nr_buf / nb_workers) * 2) / (1024 * 1024);
+ *ave_cycle = test_secs * rte_get_timer_hz() / total_cnt;
+ *bandwidth = (buf_size * 8 * (rte_get_timer_hz() / (float)*ave_cycle))
/ 1000000000;
+ *mops = (float)rte_get_timer_hz() / *ave_cycle / 1000000;
+}
+
+static void
+output_result(uint8_t scenario_id, uint32_t lcore_id, uint16_t dev_id,
uint64_t ave_cycle,
+ uint32_t buf_size, uint32_t nr_buf, uint32_t memory,
+ float bandwidth, float mops, bool is_dma)
+{
+ if (is_dma)
+ printf("lcore %u, DMA %u:\n", lcore_id, dev_id);
+ else
+ printf("lcore %u\n", lcore_id);
+
+ printf("average cycles/op: %" PRIu64 ", buffer size: %u, nr_buf: %u,
memory: %uMB, frequency: %" PRIu64 ".\n",
+ ave_cycle, buf_size, nr_buf, memory,
rte_get_timer_hz());
+ printf("Average bandwidth: %.3lfGbps, MOps: %.3lf\n", bandwidth, mops);
+
+ if (is_dma)
+ snprintf(output_str[lcore_id], MAX_OUTPUT_STR_LEN,
CSV_LINE_DMA_FMT,
+ scenario_id, lcore_id, dev_id, buf_size,
+ nr_buf, memory, ave_cycle, bandwidth, mops);
+ else
+ snprintf(output_str[lcore_id], MAX_OUTPUT_STR_LEN,
CSV_LINE_CPU_FMT,
+ scenario_id, lcore_id, buf_size,
+ nr_buf, memory, ave_cycle, bandwidth, mops);
+}
+
+static inline void
+cache_flush_buf(__maybe_unused struct rte_mbuf **array,
+ __maybe_unused uint32_t nr_buf,
+ __maybe_unused uint32_t buf_size)
+{
+#ifdef RTE_ARCH_X86_64
+ char *data;
+ struct rte_mbuf **srcs = array;
+ uint32_t i, offset;
+
+ for (i = 0; i < nr_buf; i++) {
+ data = rte_pktmbuf_mtod(srcs[i], char *);
+ for (offset = 0; offset < buf_size; offset += 64)
+ __builtin_ia32_clflush(data + offset);
+ }
+#endif
+}
+
+/* Configuration of device. */
+static void
+configure_dmadev_queue(uint32_t dev_id, uint32_t ring_size)
+{
+ uint16_t vchan = 0;
+ struct rte_dma_info info;
+ struct rte_dma_conf dev_config = { .nb_vchans = 1 };
+ struct rte_dma_vchan_conf qconf = {
+ .direction = RTE_DMA_DIR_MEM_TO_MEM,
+ .nb_desc = ring_size
+ };
+
+ if (rte_dma_configure(dev_id, &dev_config) != 0)
+ rte_exit(EXIT_FAILURE, "Error with rte_dma_configure()\n");
+
+ if (rte_dma_vchan_setup(dev_id, vchan, &qconf) != 0)
+ rte_exit(EXIT_FAILURE, "Error with queue configuration\n");
+
+ rte_dma_info_get(dev_id, &info);
+ if (info.nb_vchans != 1)
+ rte_exit(EXIT_FAILURE, "Error, no configured queues reported on
device id %u\n", dev_id);
+
+ if (rte_dma_start(dev_id) != 0)
+ rte_exit(EXIT_FAILURE, "Error with rte_dma_start()\n");
+}
+
+static int
+config_dmadevs(uint32_t nb_workers, uint32_t ring_size)
+{
+ int16_t dev_id = rte_dma_next_dev(0);
+ uint32_t i;
+
+ nb_dmadevs = 0;
+
+ for (i = 0; i < nb_workers; i++) {
+ if (dev_id == -1)
+ goto end;
+
+ dmadev_ids[i] = dev_id;
+ configure_dmadev_queue(dmadev_ids[i], ring_size);
+ ++nb_dmadevs;
+ dev_id = rte_dma_next_dev(dev_id + 1);
+ }
+
+end:
+ if (nb_dmadevs < nb_workers) {
+ printf("Not enough dmadevs (%u) for all workers (%u).\n",
nb_dmadevs, nb_workers);
+ return -1;
+ }
+
+ printf("Number of used dmadevs: %u.\n", nb_dmadevs);
+
+ return 0;
+}
+
+#define POLL_MAX 1000
+
+static inline int
+do_dma_mem_copy(void *p)
+{
+ uint16_t *para_idx = (uint16_t *)p;
+ volatile struct lcore_params *para = worker_params[*para_idx];
+ volatile struct worker_info *worker_info = &(para->worker_info);
+ uint16_t dev_id = para->dev_id;
+ uint32_t nr_buf = para->nr_buf;
+ uint16_t kick_batch = para->kick_batch;
+ uint32_t buf_size = para->buf_size;
+ struct rte_mbuf **srcs = para->srcs;
+ struct rte_mbuf **dsts = para->dsts;
+ int64_t async_cnt = 0;
+ int nr_cpl = 0;
+ uint32_t i;
+ uint32_t poll_cnt = 0;
+
+ worker_info->stop_flag = false;
+ worker_info->ready_flag = true;
+
+ while (!worker_info->start_flag)
+ ;
+
+ while (1) {
+ for (i = 0; i < nr_buf; i++) {
+ if (unlikely(rte_dma_copy(dev_id,
+ 0,
+ rte_pktmbuf_iova(srcs[i]),
+ rte_pktmbuf_iova(dsts[i]),
+ buf_size,
+ 0) < 0)) {
+ rte_dma_submit(dev_id, 0);
+ while (rte_dma_burst_capacity(dev_id, 0) == 0) {
+ nr_cpl = rte_dma_completed(dev_id, 0,
MAX_DMA_CPL_NB,
+ NULL, NULL);
+ async_cnt -= nr_cpl;
+ worker_info->total_cpl += nr_cpl;
+ }
+ if (rte_dma_copy(dev_id,
+ 0,
+ rte_pktmbuf_iova(srcs[i]),
+ rte_pktmbuf_iova(dsts[i]),
+ buf_size,
+ 0) < 0) {
+ printf("enqueue fail again at %u\n", i);
+ printf("space:%d\n",
rte_dma_burst_capacity(dev_id, 0));
+ rte_exit(EXIT_FAILURE, "DMA enqueue
failed\n");
+ }
+ }
+ async_cnt++;
+
+ if ((async_cnt % kick_batch) == 0) {
+ rte_dma_submit(dev_id, 0);
+ /* add a poll to avoid ring full */
+ nr_cpl = rte_dma_completed(dev_id, 0,
MAX_DMA_CPL_NB, NULL, NULL);
+ async_cnt -= nr_cpl;
+ worker_info->total_cpl += nr_cpl;
+ }
+ }
+
+ if (worker_info->stop_flag)
+ break;
+ }
+
+ rte_dma_submit(dev_id, 0);
+ while ((async_cnt > 0) && (poll_cnt++ < POLL_MAX)) {
+ nr_cpl = rte_dma_completed(dev_id, 0, MAX_DMA_CPL_NB, NULL,
NULL);
+ async_cnt -= nr_cpl;
+ }
+
+ return 0;
+}
+
+static inline int
+do_cpu_mem_copy(void *p)
+{
+ uint16_t *para_idx = (uint16_t *)p;
+ volatile struct lcore_params *para = worker_params[*para_idx];
+ volatile struct worker_info *worker_info = &(para->worker_info);
+ uint32_t nr_buf = para->nr_buf;
+ uint32_t buf_size = para->buf_size;
+ struct rte_mbuf **srcs = para->srcs;
+ struct rte_mbuf **dsts = para->dsts;
+ uint32_t i;
+
+ worker_info->stop_flag = false;
+ worker_info->ready_flag = true;
+
+ while (!worker_info->start_flag)
+ ;
+
+ while (1) {
+ for (i = 0; i < nr_buf; i++) {
+ /* copy buffer form src to dst */
+ rte_memcpy((void
*)(uintptr_t)rte_mbuf_data_iova(dsts[i]),
+ (void *)(uintptr_t)rte_mbuf_data_iova(srcs[i]),
+ (size_t)buf_size);
+ worker_info->total_cpl++;
+ }
+
+ if (worker_info->stop_flag)
+ break;
+ }
+
+ return 0;
+}
+
+static int
+setup_memory_env(struct test_configure *cfg, struct rte_mbuf ***srcs,
+ struct rte_mbuf ***dsts)
+{
+ unsigned int buf_size = cfg->buf_size.cur;
+ unsigned int nr_sockets;
+ uint32_t nr_buf = cfg->nr_buf;
+
+ nr_sockets = rte_socket_count();
+ if (cfg->src_numa_node >= nr_sockets ||
+ cfg->dst_numa_node >= nr_sockets) {
+ printf("Error: Source or destination numa exceeds the acture
numa nodes.\n");
+ return -1;
+ }
+
+ src_pool = rte_pktmbuf_pool_create("Benchmark_DMA_SRC",
+ nr_buf, /* n == num elements */
+ 64, /* cache size */
+ 0, /* priv size */
+ buf_size + RTE_PKTMBUF_HEADROOM,
+ cfg->src_numa_node);
+ if (src_pool == NULL) {
+ PRINT_ERR("Error with source mempool creation.\n");
+ return -1;
+ }
+
+ dst_pool = rte_pktmbuf_pool_create("Benchmark_DMA_DST",
+ nr_buf, /* n == num elements */
+ 64, /* cache size */
+ 0, /* priv size */
+ buf_size + RTE_PKTMBUF_HEADROOM,
+ cfg->dst_numa_node);
+ if (dst_pool == NULL) {
+ PRINT_ERR("Error with destination mempool creation.\n");
+ return -1;
+ }
+
+ *srcs = rte_malloc(NULL, nr_buf * sizeof(struct rte_mbuf *), 0);
+ if (*srcs == NULL) {
+ printf("Error: srcs malloc failed.\n");
+ return -1;
+ }
+
+ *dsts = rte_malloc(NULL, nr_buf * sizeof(struct rte_mbuf *), 0);
+ if (*dsts == NULL) {
+ printf("Error: dsts malloc failed.\n");
+ return -1;
+ }
+
+ if (rte_mempool_get_bulk(src_pool, (void **)*srcs, nr_buf) != 0) {
+ printf("get src mbufs failed.\n");
+ return -1;
+ }
+ if (rte_mempool_get_bulk(dst_pool, (void **)*dsts, nr_buf) != 0) {
+ printf("get dst mbufs failed.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+void
+mem_copy_benchmark(struct test_configure *cfg, bool is_dma)
+{
+ uint16_t i;
+ uint32_t offset;
+ unsigned int lcore_id = 0;
+ struct rte_mbuf **srcs = NULL, **dsts = NULL;
+ unsigned int buf_size = cfg->buf_size.cur;
+ uint16_t kick_batch = cfg->kick_batch.cur;
+ uint32_t nr_buf = cfg->nr_buf = (cfg->mem_size.cur * 1024 * 1024) /
(cfg->buf_size.cur * 2);
+ uint16_t nb_workers = cfg->nb_workers;
+ uint16_t test_secs = cfg->test_secs;
+ uint32_t memory;
+ uint32_t avg_cycles = 0;
+ float mops;
+ float bandwidth;
+
+ if (setup_memory_env(cfg, &srcs, &dsts) < 0)
+ goto out;
+
+ if (is_dma)
+ if (config_dmadevs(nb_workers, cfg->ring_size.cur) < 0)
+ goto out;
+
+ if (cfg->cache_flush) {
+ cache_flush_buf(srcs, buf_size, nr_buf);
+ cache_flush_buf(dsts, buf_size, nr_buf);
+ rte_mb();
+ }
+
+ printf("Start testing....\n");
+
+ for (i = 0; i < nb_workers; i++) {
+ lcore_id = rte_get_next_lcore(lcore_id, true, true);
+ offset = nr_buf / nb_workers * i;
+
+ worker_params[i] = rte_malloc(NULL, sizeof(struct
lcore_params), 0);
+ if (!worker_params[i]) {
+ printf("lcore parameters malloc failure for lcore
%d\n", lcore_id);
+ break;
+ }
+ if (is_dma) {
+ worker_params[i]->dev_id = dmadev_ids[i];
+ worker_params[i]->kick_batch = kick_batch;
+ }
+ worker_params[i]->worker_id = i;
+ worker_params[i]->nr_buf = (uint32_t)(nr_buf / nb_workers);
+ worker_params[i]->buf_size = buf_size;
+ worker_params[i]->test_secs = test_secs;
+ worker_params[i]->srcs = srcs + offset;
+ worker_params[i]->dsts = dsts + offset;
+ worker_params[i]->scenario_id = cfg->scenario_id;
+ worker_params[i]->lcore_id = lcore_id;
+
+ if (is_dma)
+ rte_eal_remote_launch(do_dma_mem_copy, (void *)(&i),
lcore_id);
+ else
+ rte_eal_remote_launch(do_cpu_mem_copy, (void *)(&i),
lcore_id);
+ }
+
+ while (1) {
+ bool ready = true;
+ for (i = 0; i < nb_workers; i++) {
+ if (worker_params[i]->worker_info.ready_flag == false) {
+ ready = 0;
+ break;
+ }
+ }
+ if (ready)
+ break;
+ }
+
+ for (i = 0; i < nb_workers; i++)
+ worker_params[i]->worker_info.start_flag = true;
+
+ usleep(TEST_WAIT_U_SECOND);
+ for (i = 0; i < nb_workers; i++)
+ worker_params[i]->worker_info.test_cpl =
worker_params[i]->worker_info.total_cpl;
+
+ usleep(test_secs * 1000 * 1000);
+ for (i = 0; i < nb_workers; i++)
+ worker_params[i]->worker_info.test_cpl =
worker_params[i]->worker_info.total_cpl -
+
worker_params[i]->worker_info.test_cpl;
+
+ for (i = 0; i < nb_workers; i++)
+ worker_params[i]->worker_info.stop_flag = true;
+
+ rte_eal_mp_wait_lcore();
+
+ for (i = 0; i < nb_workers; i++) {
+ calc_result(buf_size, nr_buf, nb_workers, test_secs,
+ worker_params[i]->worker_info.test_cpl,
+ &memory, &avg_cycles, &bandwidth, &mops);
+ output_result(cfg->scenario_id, worker_params[i]->lcore_id,
+ worker_params[i]->dev_id, avg_cycles,
buf_size,
+ nr_buf / nb_workers, memory, bandwidth,
mops, is_dma);
+ }
+
+out:
+ /* free env */
+ if (srcs)
+ rte_pktmbuf_free_bulk(srcs, nr_buf);
+ if (dsts)
+ rte_pktmbuf_free_bulk(dsts, nr_buf);
+
+ if (src_pool)
+ rte_mempool_free(src_pool);
+ if (dst_pool)
+ rte_mempool_free(dst_pool);
+
+ if (is_dma) {
+ for (i = 0; i < nb_dmadevs; i++) {
+ printf("Stopping dmadev %d\n", dmadev_ids[i]);
+ rte_dma_stop(dmadev_ids[i]);
+ }
+ }
+}
diff --git a/app/test-dma-perf/config.ini b/app/test-dma-perf/config.ini
new file mode 100644
index 0000000000..47bcdd2eb2
--- /dev/null
+++ b/app/test-dma-perf/config.ini
@@ -0,0 +1,56 @@
+
+; Supported test types:
+; DMA_MEM_COPY|CPU_MEM_COPY
+
+; Parameters:
+; "mem_size","buf_size","dma_ring_size","kick_batch".
+; "mem_size" means the size of the memory footprint.
+; "buf_size" means the memory size of a single operation.
+; "dma_ring_size" means the dma ring buffer size.
+; "kick_batch" means dma operation batch size.
+
+; Format: variable=first[,last,increment[,ADD|MUL]]
+; ADD is the default mode.
+
+; src_numa_node is used to control the numa node where the source memory is
allocated.
+; dst_numa_node is used to control the numa node where the destination memory
is allocated.
+
+; cache_flush is used to control if the cache should be flushed.
+
+; test_seconds is used to control the test time of the whole case.
+
+; worker_threads is used to control the threads number of the test app.
+; It should be less than the core number.
+
+; mpool_iter_step is used to control the buffer continuity.
+
+; Bind DMA to lcore:
+; Specify the "lcore_dma" parameter.
+; The number of "lcore_dma" should be greater than or equal to the number of
"worker_threads".
+; Otherwise the remaining DMA devices will be automatically allocated to
threads that are not
+; specified. If EAL parameters "-l" and "-a" are specified, the "lcore_dma"
should be within
+; their range.
+
+[case1]
+type=DMA_MEM_COPY
+mem_size=10
+buf_size=64,8192,2,MUL
+dma_ring_size=1024
+kick_batch=32
+src_numa_node=0
+dst_numa_node=0
+cache_flush=0
+test_seconds=2
+worker_threads=1
+eal_args=--in-memory --file-prefix=test
+
+[case2]
+type=CPU_MEM_COPY
+mem_size=10
+buf_size=64,8192,2,MUL
+src_numa_node=0
+dst_numa_node=1
+cache_flush=0
+test_seconds=2
+worker_threads=1
+eal_args=--in-memory --no-pci
diff --git a/app/test-dma-perf/main.c b/app/test-dma-perf/main.c
new file mode 100644
index 0000000000..00176db6d6
--- /dev/null
+++ b/app/test-dma-perf/main.c
@@ -0,0 +1,445 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Intel Corporation
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <sys/wait.h>
+#include <inttypes.h>
+#include <libgen.h>
+
+#include <rte_eal.h>
+#include <rte_cfgfile.h>
+#include <rte_string_fns.h>
+#include <rte_lcore.h>
+
+#include "main.h"
+
+#define CSV_HDR_FMT "Case %u : %s,lcore,DMA,buffer
size,nr_buf,memory(MB),cycle,bandwidth(Gbps),MOps\n"
+
+#define MAX_EAL_PARAM_NB 100
+#define MAX_EAL_PARAM_LEN 1024
+
+#define DMA_MEM_COPY "DMA_MEM_COPY"
+#define CPU_MEM_COPY "CPU_MEM_COPY"
+
+#define CMDLINE_CONFIG_ARG "--config"
+#define CMDLINE_RESULT_ARG "--result"
+
+#define MAX_PARAMS_PER_ENTRY 4
+
+#define MAX_LONG_OPT_SZ 64
+
+enum {
+ TEST_TYPE_NONE = 0,
+ TEST_TYPE_DMA_MEM_COPY,
+ TEST_TYPE_CPU_MEM_COPY
+};
+
+#define MAX_TEST_CASES 16
+static struct test_configure test_cases[MAX_TEST_CASES];
+
+char output_str[MAX_WORKER_NB][MAX_OUTPUT_STR_LEN];
+
+static FILE *fd;
+
+static void
+output_csv(bool need_blankline)
+{
+ uint32_t i;
+
+ if (need_blankline) {
+ fprintf(fd, ",,,,,,,,\n");
+ fprintf(fd, ",,,,,,,,\n");
+ }
+
+ for (i = 0; i < RTE_DIM(output_str); i++) {
+ if (output_str[i][0]) {
+ fprintf(fd, "%s", output_str[i]);
+ output_str[i][0] = '\0';
+ }
+ }
+
+ fflush(fd);
+}
+
+static void
+output_env_info(void)
+{
+ snprintf(output_str[0], MAX_OUTPUT_STR_LEN, "test environment:\n");
+ snprintf(output_str[1], MAX_OUTPUT_STR_LEN, "frequency,%" PRIu64 "\n",
rte_get_timer_hz());
+
+ output_csv(true);
+}
+
+static void
+output_header(uint32_t case_id, struct test_configure *case_cfg)
+{
+ snprintf(output_str[0], MAX_OUTPUT_STR_LEN,
+ CSV_HDR_FMT, case_id, case_cfg->test_type_str);
+
+ output_csv(true);
+}
+
+static void
+run_test_case(struct test_configure *case_cfg)
+{
+ switch (case_cfg->test_type) {
+ case TEST_TYPE_DMA_MEM_COPY:
+ mem_copy_benchmark(case_cfg, true);
+ break;
+ case TEST_TYPE_CPU_MEM_COPY:
+ mem_copy_benchmark(case_cfg, false);
+ break;
+ default:
+ printf("Unknown test type. %s\n", case_cfg->test_type_str);
+ break;
+ }
+}
+
+static void
+run_test(uint32_t case_id, struct test_configure *case_cfg)
+{
+ uint32_t i;
+ uint32_t nb_lcores = rte_lcore_count();
+ struct test_configure_entry *mem_size = &case_cfg->mem_size;
+ struct test_configure_entry *buf_size = &case_cfg->buf_size;
+ struct test_configure_entry *ring_size = &case_cfg->ring_size;
+ struct test_configure_entry *kick_batch = &case_cfg->kick_batch;
+ struct test_configure_entry dummy = { 0 };
+ struct test_configure_entry *var_entry = &dummy;
+
+
+
+ for (i = 0; i < RTE_DIM(output_str); i++)
+ memset(output_str[i], 0, MAX_OUTPUT_STR_LEN);
+
+ if (nb_lcores <= case_cfg->nb_workers) {
+ printf("Case %u: Not enough lcores (%u) for all workers
(%u).\n",
+ case_id, nb_lcores, case_cfg->nb_workers);
+ return;
+ }
+
+ printf("Number of used lcores: %u.\n", nb_lcores);
+
+ if (mem_size->incr != 0)
+ var_entry = mem_size;
+
+ if (buf_size->incr != 0)
+ var_entry = buf_size;
+
+ if (ring_size->incr != 0)
+ var_entry = ring_size;
+
+ if (kick_batch->incr != 0)
+ var_entry = kick_batch;
+
+ case_cfg->scenario_id = 0;
+
+ output_header(case_id, case_cfg);
+
+ for (var_entry->cur = var_entry->first; var_entry->cur <=
var_entry->last;) {
+ case_cfg->scenario_id++;
+ printf("\nRunning scenario %d\n", case_cfg->scenario_id);
+
+ run_test_case(case_cfg);
+ output_csv(false);
+
+ if (var_entry->op == OP_MUL)
+ var_entry->cur *= var_entry->incr;
+ else if (var_entry->op == OP_ADD)
+ var_entry->cur += var_entry->incr;
+ else
+ break;
+ }
+
+}
+
+static int
+parse_entry(const char *value, struct test_configure_entry *entry)
+{
+ char input[255] = {0};
+ char *args[MAX_PARAMS_PER_ENTRY];
+ int args_nr = -1;
+
+ strncpy(input, value, 254);
+ if (*input == '\0')
+ goto out;
+
+ args_nr = rte_strsplit(input, strlen(input), args,
MAX_PARAMS_PER_ENTRY, ',');
+ if (args_nr <= 0)
+ goto out;
+
+ entry->cur = entry->first = (uint32_t)atoi(args[0]);
+ entry->last = args_nr > 1 ? (uint32_t)atoi(args[1]) : 0;
+ entry->incr = args_nr > 2 ? (uint32_t)atoi(args[2]) : 0;
+
+ if (args_nr > 3) {
+ if (!strcmp(args[3], "MUL"))
+ entry->op = OP_MUL;
+ else if (!strcmp(args[3], "ADD"))
+ entry->op = OP_ADD;
+ else {
+ printf("Invalid op %s", args[3]);
+ args_nr = -1;
+ }
+ } else
+ entry->op = OP_NONE;
+out:
+ return args_nr;
+}
+
+static void
+load_configs(const char *path)
+{
+ struct rte_cfgfile *cfgfile;
+ int nb_sections, i;
+ struct test_configure *test_case;
+ char section_name[CFG_NAME_LEN];
+ const char *case_type;
+ const char *mem_size_str, *buf_size_str, *ring_size_str,
*kick_batch_str;
+ int args_nr, nb_vp;
+ bool is_dma;
+
+ cfgfile = rte_cfgfile_load(path, 0);
+ if (!cfgfile) {
+ printf("Open configure file error.\n");
+ exit(1);
+ }
+
+ nb_sections = rte_cfgfile_num_sections(cfgfile, NULL, 0);
+ if (nb_sections > MAX_TEST_CASES) {
+ printf("Error: The maximum number of cases is %d.\n",
MAX_TEST_CASES);
+ exit(1);
+ }
+
+ for (i = 0; i < nb_sections; i++) {
+ snprintf(section_name, CFG_NAME_LEN, "case%d", i + 1);
+ test_case = &test_cases[i];
+ case_type = rte_cfgfile_get_entry(cfgfile, section_name,
"type");
+ if (!case_type) {
+ printf("Error: No case type in case %d\n.", i + 1);
+ exit(1);
+ }
+
+ if (strcmp(case_type, DMA_MEM_COPY) == 0) {
+ test_case->test_type = TEST_TYPE_DMA_MEM_COPY;
+ test_case->test_type_str = DMA_MEM_COPY;
+ is_dma = true;
+ } else if (strcmp(case_type, CPU_MEM_COPY) == 0) {
+ test_case->test_type = TEST_TYPE_CPU_MEM_COPY;
+ test_case->test_type_str = CPU_MEM_COPY;
+ is_dma = false;
+ } else {
+ printf("Error: Cannot find case type %s.\n", case_type);
+ exit(1);
+ }
+
+ nb_vp = 0;
+
+ test_case->src_numa_node =
(int)atoi(rte_cfgfile_get_entry(cfgfile,
+ section_name,
"src_numa_node"));
+ test_case->dst_numa_node =
(int)atoi(rte_cfgfile_get_entry(cfgfile,
+ section_name,
"dst_numa_node"));
+
+ mem_size_str = rte_cfgfile_get_entry(cfgfile, section_name,
"mem_size");
+ args_nr = parse_entry(mem_size_str, &test_case->mem_size);
+ if (args_nr < 0) {
+ printf("parse error\n");
+ break;
+ } else if (args_nr > 1)
+ nb_vp++;
+
+ buf_size_str = rte_cfgfile_get_entry(cfgfile, section_name,
"buf_size");
+ args_nr = parse_entry(buf_size_str, &test_case->buf_size);
+ if (args_nr < 0) {
+ printf("parse error\n");
+ break;
+ } else if (args_nr > 1)
+ nb_vp++;
+
+ if (is_dma) {
+ ring_size_str = rte_cfgfile_get_entry(cfgfile,
section_name,
+
"dma_ring_size");
+ args_nr = parse_entry(ring_size_str,
&test_case->ring_size);
+ if (args_nr < 0) {
+ printf("parse error\n");
+ break;
+ } else if (args_nr > 1)
+ nb_vp++;
+
+ kick_batch_str = rte_cfgfile_get_entry(cfgfile,
section_name, "kick_batch");
+ args_nr = parse_entry(kick_batch_str,
&test_case->kick_batch);
+ if (args_nr < 0) {
+ printf("parse error\n");
+ break;
+ } else if (args_nr > 1)
+ nb_vp++;
+ }
+
+ if (nb_vp > 1) {
+ printf("Error, each section can only have a single
variable parameter.\n");
+ break;
+ }
+
+ test_case->cache_flush =
+ (int)atoi(rte_cfgfile_get_entry(cfgfile, section_name,
"cache_flush"));
+ test_case->test_secs =
(uint16_t)atoi(rte_cfgfile_get_entry(cfgfile,
+ section_name, "test_seconds"));
+ test_case->nb_workers =
(uint16_t)atoi(rte_cfgfile_get_entry(cfgfile,
+ section_name, "worker_threads"));
+
+ test_case->eal_args = rte_cfgfile_get_entry(cfgfile,
section_name, "eal_args");
+ }
+
+ rte_cfgfile_close(cfgfile);
+}
+
+/* Parse the argument given in the command line of the application */
+static int
+append_eal_args(int argc, char **argv, const char *eal_args, char **new_argv)
+{
+ int i;
+ char *tokens[MAX_EAL_PARAM_NB];
+ char args[MAX_EAL_PARAM_LEN] = {0};
+ int token_nb, new_argc = 0;
+
+ for (i = 0; i < argc; i++) {
+ if ((strcmp(argv[i], CMDLINE_CONFIG_ARG) == 0) ||
+ (strcmp(argv[i], CMDLINE_RESULT_ARG) == 0)) {
+ i++; // skip the value argument
+ continue;
+ }
+ strlcpy(new_argv[new_argc], argv[i],
sizeof(new_argv[new_argc]));
+ new_argc++;
+ }
+
+ if (eal_args) {
+ strlcpy(args, eal_args, sizeof(args));
+ token_nb = rte_strsplit(args, strlen(args),
+ tokens, MAX_EAL_PARAM_NB, ' ');
+ for (i = 0; i < token_nb; i++)
+ strcpy(new_argv[new_argc++], tokens[i]);
+ }
+
+ return new_argc;
+}
+
+int
+main(int argc, char *argv[])
+{
+ int ret;
+ uint32_t i, nb_lcores;
+ pid_t cpid, wpid;
+ int wstatus;
+ char args[MAX_EAL_PARAM_NB][MAX_EAL_PARAM_LEN];
+ char *pargs[MAX_EAL_PARAM_NB];
+ char *cfg_path_ptr = NULL;
+ char *rst_path_ptr = NULL;
+ char rst_path[PATH_MAX];
+ int new_argc;
+ bool is_first_case = true;
+
+ memset(args, 0, sizeof(args));
+
+ for (i = 0; i < RTE_DIM(pargs); i++)
+ pargs[i] = args[i];
+
+ for (i = 0; i < (uint32_t)argc; i++) {
+ if (strncmp(argv[i], CMDLINE_CONFIG_ARG, MAX_LONG_OPT_SZ) == 0)
+ cfg_path_ptr = argv[i + 1];
+ if (strncmp(argv[i], CMDLINE_RESULT_ARG, MAX_LONG_OPT_SZ) == 0)
+ rst_path_ptr = argv[i + 1];
+ }
+ if (cfg_path_ptr == NULL) {
+ printf("Config file not assigned.\n");
+ return -1;
+ }
+ if (rst_path_ptr == NULL) {
+ // if the result output file is not configured, let it base on
the config file name.
+ strlcpy(rst_path, cfg_path_ptr, PATH_MAX);
+ strcat(strtok(basename(rst_path), "."), "_result.csv");
+ rst_path_ptr = rst_path;
+ }
+
+ load_configs(cfg_path_ptr);
+ fd = fopen(rst_path_ptr, "w");
+ if (fd == NULL) {
+ printf("Open output CSV file error.\n");
+ return -1;
+ }
+ fclose(fd);
+
+ for (i = 0; i < MAX_TEST_CASES; i++) {
+ if (test_cases[i].test_type == TEST_TYPE_NONE)
+ continue;
+
+ cpid = fork();
+ if (cpid < 0) {
+ printf("Fork case %d failed.\n", i + 1);
+ exit(EXIT_FAILURE);
+ } else if (cpid == 0) {
+ printf("\nRunning case %u\n", i + 1);
+
+ new_argc = append_eal_args(argc, argv,
test_cases[i].eal_args, pargs);
+ ret = rte_eal_init(new_argc, pargs);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Invalid EAL
arguments\n");
+
+ /* Check lcores. */
+ nb_lcores = rte_lcore_count();
+ if (nb_lcores < 2)
+ rte_exit(EXIT_FAILURE,
+ "There should be at least 2 worker
lcores.\n");
+
+ fd = fopen(rst_path_ptr, "a");
+ if (!fd) {
+ printf("Open output CSV file error.\n");
+ return 0;
+ }
+
+ if (is_first_case) {
+ output_env_info();
+ is_first_case = false;
+ }
+ run_test(i + 1, &test_cases[i]);
+
+ /* clean up the EAL */
+ rte_eal_cleanup();
+
+ fclose(fd);
+
+ printf("\nCase %u completed.\n", i + 1);
+
+ exit(EXIT_SUCCESS);
+ } else {
+ wpid = waitpid(cpid, &wstatus, 0);
+ if (wpid == -1) {
+ printf("waitpid error.\n");
+ exit(EXIT_FAILURE);
+ }
+
+ if (WIFEXITED(wstatus))
+ printf("Case process exited. status %d\n",
+ WEXITSTATUS(wstatus));
+ else if (WIFSIGNALED(wstatus))
+ printf("Case process killed by signal %d\n",
+ WTERMSIG(wstatus));
+ else if (WIFSTOPPED(wstatus))
+ printf("Case process stopped by signal %d\n",
+ WSTOPSIG(wstatus));
+ else if (WIFCONTINUED(wstatus))
+ printf("Case process continued.\n");
+ else
+ printf("Case process unknown terminated.\n");
+ }
+ }
+
+ printf("Bye...\n");
+ return 0;
+}
+
diff --git a/app/test-dma-perf/main.h b/app/test-dma-perf/main.h
new file mode 100644
index 0000000000..235cb74daf
--- /dev/null
+++ b/app/test-dma-perf/main.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Intel Corporation
+ */
+
+#ifndef _MAIN_H_
+#define _MAIN_H_
+
+
+#include <rte_common.h>
+#include <rte_cycles.h>
+
+#ifndef __maybe_unused
+#define __maybe_unused __rte_unused
+#endif
+
+#define MAX_WORKER_NB 128
+#define MAX_OUTPUT_STR_LEN 512
+
+extern char output_str[MAX_WORKER_NB][MAX_OUTPUT_STR_LEN];
+
+typedef enum {
+ OP_NONE = 0,
+ OP_ADD,
+ OP_MUL
+} alg_op_type;
+
+struct test_configure_entry {
+ uint32_t first;
+ uint32_t last;
+ uint32_t incr;
+ alg_op_type op;
+ uint32_t cur;
+};
+
+struct test_configure {
+ uint8_t test_type;
+ const char *test_type_str;
+ uint16_t src_numa_node;
+ uint16_t dst_numa_node;
+ uint16_t opcode;
+ bool is_dma;
+ struct test_configure_entry mem_size;
+ struct test_configure_entry buf_size;
+ struct test_configure_entry ring_size;
+ struct test_configure_entry kick_batch;
+ uint32_t cache_flush;
+ uint32_t nr_buf;
+ uint16_t test_secs;
+ uint32_t nb_workers;
+ const char *eal_args;
+ uint8_t scenario_id;
+};
+
+void mem_copy_benchmark(struct test_configure *cfg, bool is_dma);
+
+#endif /* _MAIN_H_ */
diff --git a/app/test-dma-perf/meson.build b/app/test-dma-perf/meson.build
new file mode 100644
index 0000000000..bd6c264002
--- /dev/null
+++ b/app/test-dma-perf/meson.build
@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2019-2023 Intel Corporation
+
+# meson file, for building this app as part of a main DPDK build.
+
+if is_windows
+ build = false
+ reason = 'not supported on Windows'
+ subdir_done()
+endif
+
+deps += ['dmadev', 'mbuf', 'cfgfile']
+
+sources = files(
+ 'main.c',
+ 'benchmark.c',
+)
--
2.35.1
