diff options
Diffstat (limited to 'src/spdk/examples/nvme/perf/perf.c')
| -rw-r--r-- | src/spdk/examples/nvme/perf/perf.c | 1726 |
1 files changed, 1726 insertions, 0 deletions
diff --git a/src/spdk/examples/nvme/perf/perf.c b/src/spdk/examples/nvme/perf/perf.c new file mode 100644 index 00000000..f8f4d75e --- /dev/null +++ b/src/spdk/examples/nvme/perf/perf.c @@ -0,0 +1,1726 @@ +/*- + * BSD LICENSE + * + * Copyright (c) Intel Corporation. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "spdk/stdinc.h" + +#include "spdk/env.h" +#include "spdk/fd.h" +#include "spdk/nvme.h" +#include "spdk/env.h" +#include "spdk/queue.h" +#include "spdk/string.h" +#include "spdk/nvme_intel.h" +#include "spdk/histogram_data.h" +#include "spdk/endian.h" +#include "spdk/crc16.h" + +#if HAVE_LIBAIO +#include <libaio.h> +#endif + +struct ctrlr_entry { + struct spdk_nvme_ctrlr *ctrlr; + struct spdk_nvme_intel_rw_latency_page *latency_page; + struct ctrlr_entry *next; + char name[1024]; +}; + +enum entry_type { + ENTRY_TYPE_NVME_NS, + ENTRY_TYPE_AIO_FILE, +}; + +struct ns_entry { + enum entry_type type; + + union { + struct { + struct spdk_nvme_ctrlr *ctrlr; + struct spdk_nvme_ns *ns; + } nvme; +#if HAVE_LIBAIO + struct { + int fd; + } aio; +#endif + } u; + + struct ns_entry *next; + uint32_t io_size_blocks; + uint32_t num_io_requests; + uint64_t size_in_ios; + uint32_t io_flags; + uint16_t apptag_mask; + uint16_t apptag; + char name[1024]; + const struct spdk_nvme_ns_data *nsdata; +}; + +static const double g_latency_cutoffs[] = { + 0.01, + 0.10, + 0.25, + 0.50, + 0.75, + 0.90, + 0.95, + 0.98, + 0.99, + 0.995, + 0.999, + 0.9999, + 0.99999, + 0.999999, + 0.9999999, + -1, +}; + +struct ns_worker_ctx { + struct ns_entry *entry; + uint64_t io_completed; + uint64_t total_tsc; + uint64_t min_tsc; + uint64_t max_tsc; + uint64_t current_queue_depth; + uint64_t offset_in_ios; + bool is_draining; + + union { + struct { + struct spdk_nvme_qpair *qpair; + } nvme; + +#if HAVE_LIBAIO + struct { + struct io_event *events; + io_context_t ctx; + } aio; +#endif + } u; + + struct ns_worker_ctx *next; + + struct spdk_histogram_data *histogram; +}; + +struct perf_task { + struct ns_worker_ctx *ns_ctx; + void *buf; + uint64_t submit_tsc; + uint16_t appmask; + uint16_t apptag; + uint64_t lba; + bool is_read; +#if HAVE_LIBAIO + struct iocb iocb; +#endif +}; + +struct worker_thread { + struct ns_worker_ctx *ns_ctx; + struct worker_thread *next; + unsigned lcore; +}; + +static int g_outstanding_commands; + +static bool g_latency_ssd_tracking_enable = false; +static int g_latency_sw_tracking_level = 0; + +static struct ctrlr_entry *g_controllers = NULL; +static int g_controllers_found = 0; +static struct ns_entry *g_namespaces = NULL; +static int g_num_namespaces = 0; +static struct worker_thread *g_workers = NULL; +static int g_num_workers = 0; + +static uint64_t g_tsc_rate; + +static uint32_t g_io_align = 0x200; +static uint32_t g_io_size_bytes; +static uint32_t g_max_io_md_size; +static uint32_t g_max_io_size_blocks; +static uint32_t g_metacfg_pract_flag; +static uint32_t g_metacfg_prchk_flags; +static int g_rw_percentage; +static int g_is_random; +static int g_queue_depth; +static int g_time_in_sec; +static uint32_t g_max_completions; +static int g_dpdk_mem; +static int g_shm_id = -1; +static uint32_t g_disable_sq_cmb; +static bool g_no_pci; +static bool g_warn; + +static const char *g_core_mask; + +struct trid_entry { + struct spdk_nvme_transport_id trid; + uint16_t nsid; + TAILQ_ENTRY(trid_entry) tailq; +}; + +static TAILQ_HEAD(, trid_entry) g_trid_list = TAILQ_HEAD_INITIALIZER(g_trid_list); + +static int g_aio_optind; /* Index of first AIO filename in argv */ + +static void +task_complete(struct perf_task *task); + +static void +register_ns(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_ns *ns) +{ + struct ns_entry *entry; + const struct spdk_nvme_ctrlr_data *cdata; + uint32_t max_xfer_size, entries; + struct spdk_nvme_io_qpair_opts opts; + + cdata = spdk_nvme_ctrlr_get_data(ctrlr); + + if (!spdk_nvme_ns_is_active(ns)) { + printf("Controller %-20.20s (%-20.20s): Skipping inactive NS %u\n", + cdata->mn, cdata->sn, + spdk_nvme_ns_get_id(ns)); + g_warn = true; + return; + } + + if (spdk_nvme_ns_get_size(ns) < g_io_size_bytes || + spdk_nvme_ns_get_sector_size(ns) > g_io_size_bytes) { + printf("WARNING: controller %-20.20s (%-20.20s) ns %u has invalid " + "ns size %" PRIu64 " / block size %u for I/O size %u\n", + cdata->mn, cdata->sn, spdk_nvme_ns_get_id(ns), + spdk_nvme_ns_get_size(ns), spdk_nvme_ns_get_sector_size(ns), g_io_size_bytes); + g_warn = true; + return; + } + + max_xfer_size = spdk_nvme_ns_get_max_io_xfer_size(ns); + spdk_nvme_ctrlr_get_default_io_qpair_opts(ctrlr, &opts, sizeof(opts)); + /* NVMe driver may add additional entries based on + * stripe size and maximum transfer size, we assume + * 1 more entry be used for stripe. + */ + entries = (g_io_size_bytes - 1) / max_xfer_size + 2; + if ((g_queue_depth * entries) > opts.io_queue_size) { + printf("controller IO queue size %u less than required\n", + opts.io_queue_size); + printf("Consider using lower queue depth or small IO size because " + "IO requests may be queued at the NVMe driver.\n"); + g_warn = true; + } + + entry = calloc(1, sizeof(struct ns_entry)); + if (entry == NULL) { + perror("ns_entry malloc"); + exit(1); + } + + entry->type = ENTRY_TYPE_NVME_NS; + entry->u.nvme.ctrlr = ctrlr; + entry->u.nvme.ns = ns; + entry->num_io_requests = entries; + + entry->size_in_ios = spdk_nvme_ns_get_size(ns) / + g_io_size_bytes; + entry->io_size_blocks = g_io_size_bytes / spdk_nvme_ns_get_sector_size(ns); + + if (spdk_nvme_ns_get_flags(ns) & SPDK_NVME_NS_DPS_PI_SUPPORTED) { + entry->io_flags = g_metacfg_pract_flag | g_metacfg_prchk_flags; + } + + if (g_max_io_md_size < spdk_nvme_ns_get_md_size(ns)) { + g_max_io_md_size = spdk_nvme_ns_get_md_size(ns); + } + + if (g_max_io_size_blocks < entry->io_size_blocks) { + g_max_io_size_blocks = entry->io_size_blocks; + } + + entry->nsdata = spdk_nvme_ns_get_data(ns); + + snprintf(entry->name, 44, "%-20.20s (%-20.20s)", cdata->mn, cdata->sn); + + g_num_namespaces++; + entry->next = g_namespaces; + g_namespaces = entry; +} + +static void +unregister_namespaces(void) +{ + struct ns_entry *entry = g_namespaces; + + while (entry) { + struct ns_entry *next = entry->next; + free(entry); + entry = next; + } +} + +static void +enable_latency_tracking_complete(void *cb_arg, const struct spdk_nvme_cpl *cpl) +{ + if (spdk_nvme_cpl_is_error(cpl)) { + printf("enable_latency_tracking_complete failed\n"); + } + g_outstanding_commands--; +} + +static void +set_latency_tracking_feature(struct spdk_nvme_ctrlr *ctrlr, bool enable) +{ + int res; + union spdk_nvme_intel_feat_latency_tracking latency_tracking; + + if (enable) { + latency_tracking.bits.enable = 0x01; + } else { + latency_tracking.bits.enable = 0x00; + } + + res = spdk_nvme_ctrlr_cmd_set_feature(ctrlr, SPDK_NVME_INTEL_FEAT_LATENCY_TRACKING, + latency_tracking.raw, 0, NULL, 0, enable_latency_tracking_complete, NULL); + if (res) { + printf("fail to allocate nvme request.\n"); + return; + } + g_outstanding_commands++; + + while (g_outstanding_commands) { + spdk_nvme_ctrlr_process_admin_completions(ctrlr); + } +} + +static void +register_ctrlr(struct spdk_nvme_ctrlr *ctrlr, struct trid_entry *trid_entry) +{ + struct spdk_nvme_ns *ns; + struct ctrlr_entry *entry = malloc(sizeof(struct ctrlr_entry)); + const struct spdk_nvme_ctrlr_data *cdata = spdk_nvme_ctrlr_get_data(ctrlr); + uint32_t nsid; + + if (entry == NULL) { + perror("ctrlr_entry malloc"); + exit(1); + } + + entry->latency_page = spdk_dma_zmalloc(sizeof(struct spdk_nvme_intel_rw_latency_page), + 4096, NULL); + if (entry->latency_page == NULL) { + printf("Allocation error (latency page)\n"); + exit(1); + } + + snprintf(entry->name, sizeof(entry->name), "%-20.20s (%-20.20s)", cdata->mn, cdata->sn); + + entry->ctrlr = ctrlr; + entry->next = g_controllers; + g_controllers = entry; + + if (g_latency_ssd_tracking_enable && + spdk_nvme_ctrlr_is_feature_supported(ctrlr, SPDK_NVME_INTEL_FEAT_LATENCY_TRACKING)) { + set_latency_tracking_feature(ctrlr, true); + } + + if (trid_entry->nsid == 0) { + for (nsid = spdk_nvme_ctrlr_get_first_active_ns(ctrlr); + nsid != 0; nsid = spdk_nvme_ctrlr_get_next_active_ns(ctrlr, nsid)) { + ns = spdk_nvme_ctrlr_get_ns(ctrlr, nsid); + if (ns == NULL) { + continue; + } + register_ns(ctrlr, ns); + } + } else { + ns = spdk_nvme_ctrlr_get_ns(ctrlr, trid_entry->nsid); + if (!ns) { + perror("Namespace does not exist."); + exit(1); + } + + register_ns(ctrlr, ns); + } + +} + +#if HAVE_LIBAIO +static int +register_aio_file(const char *path) +{ + struct ns_entry *entry; + + int flags, fd; + uint64_t size; + uint32_t blklen; + + if (g_rw_percentage == 100) { + flags = O_RDONLY; + } else if (g_rw_percentage == 0) { + flags = O_WRONLY; + } else { + flags = O_RDWR; + } + + flags |= O_DIRECT; + + fd = open(path, flags); + if (fd < 0) { + fprintf(stderr, "Could not open AIO device %s: %s\n", path, strerror(errno)); + return -1; + } + + size = spdk_fd_get_size(fd); + if (size == 0) { + fprintf(stderr, "Could not determine size of AIO device %s\n", path); + close(fd); + return -1; + } + + blklen = spdk_fd_get_blocklen(fd); + if (blklen == 0) { + fprintf(stderr, "Could not determine block size of AIO device %s\n", path); + close(fd); + return -1; + } + + /* + * TODO: This should really calculate the LCM of the current g_io_align and blklen. + * For now, it's fairly safe to just assume all block sizes are powers of 2. + */ + if (g_io_align < blklen) { + g_io_align = blklen; + } + + entry = malloc(sizeof(struct ns_entry)); + if (entry == NULL) { + close(fd); + perror("aio ns_entry malloc"); + return -1; + } + + entry->type = ENTRY_TYPE_AIO_FILE; + entry->u.aio.fd = fd; + entry->size_in_ios = size / g_io_size_bytes; + entry->io_size_blocks = g_io_size_bytes / blklen; + + snprintf(entry->name, sizeof(entry->name), "%s", path); + + g_num_namespaces++; + entry->next = g_namespaces; + g_namespaces = entry; + + return 0; +} + +static int +aio_submit(io_context_t aio_ctx, struct iocb *iocb, int fd, enum io_iocb_cmd cmd, void *buf, + unsigned long nbytes, uint64_t offset, void *cb_ctx) +{ + iocb->aio_fildes = fd; + iocb->aio_reqprio = 0; + iocb->aio_lio_opcode = cmd; + iocb->u.c.buf = buf; + iocb->u.c.nbytes = nbytes; + iocb->u.c.offset = offset; + iocb->data = cb_ctx; + + if (io_submit(aio_ctx, 1, &iocb) < 0) { + printf("io_submit"); + return -1; + } + + return 0; +} + +static void +aio_check_io(struct ns_worker_ctx *ns_ctx) +{ + int count, i; + struct timespec timeout; + + timeout.tv_sec = 0; + timeout.tv_nsec = 0; + + count = io_getevents(ns_ctx->u.aio.ctx, 1, g_queue_depth, ns_ctx->u.aio.events, &timeout); + if (count < 0) { + fprintf(stderr, "io_getevents error\n"); + exit(1); + } + + for (i = 0; i < count; i++) { + task_complete(ns_ctx->u.aio.events[i].data); + } +} +#endif /* HAVE_LIBAIO */ + +static void +task_extended_lba_setup_pi(struct ns_entry *entry, struct perf_task *task, uint64_t lba, + uint32_t lba_count, bool is_write) +{ + struct spdk_nvme_protection_info *pi; + uint32_t i, md_size, sector_size, pi_offset; + uint16_t crc16; + + task->appmask = 0; + task->apptag = 0; + + if (!spdk_nvme_ns_supports_extended_lba(entry->u.nvme.ns)) { + return; + } + + if (spdk_nvme_ns_get_pi_type(entry->u.nvme.ns) == + SPDK_NVME_FMT_NVM_PROTECTION_DISABLE) { + return; + } + + if (entry->io_flags & SPDK_NVME_IO_FLAGS_PRACT) { + return; + } + + /* Type3 don't support REFTAG */ + if (spdk_nvme_ns_get_pi_type(entry->u.nvme.ns) == + SPDK_NVME_FMT_NVM_PROTECTION_TYPE3) { + return; + } + + sector_size = spdk_nvme_ns_get_sector_size(entry->u.nvme.ns); + md_size = spdk_nvme_ns_get_md_size(entry->u.nvme.ns); + + /* PI locates at the first 8 bytes of metadata, + * doesn't support now + */ + if (entry->nsdata->dps.md_start) { + return; + } + + if (entry->io_flags & SPDK_NVME_IO_FLAGS_PRCHK_APPTAG) { + /* Let's use number of lbas for application tag */ + task->appmask = 0xffff; + task->apptag = lba_count; + } + + for (i = 0; i < lba_count; i++) { + pi_offset = ((sector_size + md_size) * (i + 1)) - 8; + pi = (struct spdk_nvme_protection_info *)(task->buf + pi_offset); + memset(pi, 0, sizeof(*pi)); + + if (is_write) { + if (entry->io_flags & SPDK_NVME_IO_FLAGS_PRCHK_GUARD) { + /* CRC buffer should not include PI */ + crc16 = spdk_crc16_t10dif(task->buf + (sector_size + md_size) * i, + sector_size + md_size - 8); + to_be16(&pi->guard, crc16); + } + if (entry->io_flags & SPDK_NVME_IO_FLAGS_PRCHK_APPTAG) { + /* Let's use number of lbas for application tag */ + to_be16(&pi->app_tag, lba_count); + } + if (entry->io_flags & SPDK_NVME_IO_FLAGS_PRCHK_REFTAG) { + to_be32(&pi->ref_tag, (uint32_t)lba + i); + } + } + } +} + +static void +task_extended_lba_pi_verify(struct ns_entry *entry, struct perf_task *task, + uint64_t lba, uint32_t lba_count) +{ + struct spdk_nvme_protection_info *pi; + uint32_t i, md_size, sector_size, pi_offset, ref_tag; + uint16_t crc16, guard, app_tag; + + if (spdk_nvme_ns_get_pi_type(entry->u.nvme.ns) == + SPDK_NVME_FMT_NVM_PROTECTION_DISABLE) { + return; + } + + sector_size = spdk_nvme_ns_get_sector_size(entry->u.nvme.ns); + md_size = spdk_nvme_ns_get_md_size(entry->u.nvme.ns); + + /* PI locates at the first 8 bytes of metadata, + * doesn't support now + */ + if (entry->nsdata->dps.md_start) { + return; + } + + for (i = 0; i < lba_count; i++) { + pi_offset = ((sector_size + md_size) * (i + 1)) - 8; + pi = (struct spdk_nvme_protection_info *)(task->buf + pi_offset); + + if (entry->io_flags & SPDK_NVME_IO_FLAGS_PRCHK_GUARD) { + /* CRC buffer should not include last 8 bytes of PI */ + crc16 = spdk_crc16_t10dif(task->buf + (sector_size + md_size) * i, + sector_size + md_size - 8); + to_be16(&guard, crc16); + if (pi->guard != guard) { + fprintf(stdout, "Get Guard Error LBA 0x%16.16"PRIx64"," + " Preferred 0x%04x but returned with 0x%04x," + " may read the LBA without write it first\n", + lba + i, guard, pi->guard); + } + + } + if (entry->io_flags & SPDK_NVME_IO_FLAGS_PRCHK_APPTAG) { + /* Previously we used the number of lbas as + * application tag for writes + */ + to_be16(&app_tag, lba_count); + if (pi->app_tag != app_tag) { + fprintf(stdout, "Get Application Tag Error LBA 0x%16.16"PRIx64"," + " Preferred 0x%04x but returned with 0x%04x," + " may read the LBA without write it first\n", + lba + i, app_tag, pi->app_tag); + } + } + if (entry->io_flags & SPDK_NVME_IO_FLAGS_PRCHK_REFTAG) { + to_be32(&ref_tag, (uint32_t)lba + i); + if (pi->ref_tag != ref_tag) { + fprintf(stdout, "Get Reference Tag Error LBA 0x%16.16"PRIx64"," + " Preferred 0x%08x but returned with 0x%08x," + " may read the LBA without write it first\n", + lba + i, ref_tag, pi->ref_tag); + } + } + } +} + +static void io_complete(void *ctx, const struct spdk_nvme_cpl *completion); + +static __thread unsigned int seed = 0; + +static void +submit_single_io(struct perf_task *task) +{ + uint64_t offset_in_ios; + int rc; + struct ns_worker_ctx *ns_ctx = task->ns_ctx; + struct ns_entry *entry = ns_ctx->entry; + + if (g_is_random) { + offset_in_ios = rand_r(&seed) % entry->size_in_ios; + } else { + offset_in_ios = ns_ctx->offset_in_ios++; + if (ns_ctx->offset_in_ios == entry->size_in_ios) { + ns_ctx->offset_in_ios = 0; + } + } + + task->is_read = false; + task->submit_tsc = spdk_get_ticks(); + task->lba = offset_in_ios * entry->io_size_blocks; + + if ((g_rw_percentage == 100) || + (g_rw_percentage != 0 && ((rand_r(&seed) % 100) < g_rw_percentage))) { +#if HAVE_LIBAIO + if (entry->type == ENTRY_TYPE_AIO_FILE) { + rc = aio_submit(ns_ctx->u.aio.ctx, &task->iocb, entry->u.aio.fd, IO_CMD_PREAD, task->buf, + g_io_size_bytes, offset_in_ios * g_io_size_bytes, task); + } else +#endif + { + task_extended_lba_setup_pi(entry, task, task->lba, + entry->io_size_blocks, false); + task->is_read = true; + + rc = spdk_nvme_ns_cmd_read_with_md(entry->u.nvme.ns, ns_ctx->u.nvme.qpair, + task->buf, NULL, + task->lba, + entry->io_size_blocks, io_complete, + task, entry->io_flags, + task->appmask, task->apptag); + } + } else { +#if HAVE_LIBAIO + if (entry->type == ENTRY_TYPE_AIO_FILE) { + rc = aio_submit(ns_ctx->u.aio.ctx, &task->iocb, entry->u.aio.fd, IO_CMD_PWRITE, task->buf, + g_io_size_bytes, offset_in_ios * g_io_size_bytes, task); + } else +#endif + { + task_extended_lba_setup_pi(entry, task, task->lba, + entry->io_size_blocks, true); + + rc = spdk_nvme_ns_cmd_write_with_md(entry->u.nvme.ns, ns_ctx->u.nvme.qpair, + task->buf, NULL, + task->lba, + entry->io_size_blocks, io_complete, + task, entry->io_flags, + task->appmask, task->apptag); + } + } + + if (rc != 0) { + fprintf(stderr, "starting I/O failed\n"); + } else { + ns_ctx->current_queue_depth++; + } +} + +static void +task_complete(struct perf_task *task) +{ + struct ns_worker_ctx *ns_ctx; + uint64_t tsc_diff; + struct ns_entry *entry; + + ns_ctx = task->ns_ctx; + entry = ns_ctx->entry; + ns_ctx->current_queue_depth--; + ns_ctx->io_completed++; + tsc_diff = spdk_get_ticks() - task->submit_tsc; + ns_ctx->total_tsc += tsc_diff; + if (ns_ctx->min_tsc > tsc_diff) { + ns_ctx->min_tsc = tsc_diff; + } + if (ns_ctx->max_tsc < tsc_diff) { + ns_ctx->max_tsc = tsc_diff; + } + if (g_latency_sw_tracking_level > 0) { + spdk_histogram_data_tally(ns_ctx->histogram, tsc_diff); + } + + /* add application level verification for end-to-end data protection */ + if (entry->type == ENTRY_TYPE_NVME_NS) { + if (spdk_nvme_ns_supports_extended_lba(entry->u.nvme.ns) && + task->is_read && !g_metacfg_pract_flag) { + task_extended_lba_pi_verify(entry, task, task->lba, + entry->io_size_blocks); + } + } + + /* + * is_draining indicates when time has expired for the test run + * and we are just waiting for the previously submitted I/O + * to complete. In this case, do not submit a new I/O to replace + * the one just completed. + */ + if (ns_ctx->is_draining) { + spdk_dma_free(task->buf); + free(task); + } else { + submit_single_io(task); + } +} + +static void +io_complete(void *ctx, const struct spdk_nvme_cpl *completion) +{ + task_complete((struct perf_task *)ctx); +} + +static void +check_io(struct ns_worker_ctx *ns_ctx) +{ +#if HAVE_LIBAIO + if (ns_ctx->entry->type == ENTRY_TYPE_AIO_FILE) { + aio_check_io(ns_ctx); + } else +#endif + { + spdk_nvme_qpair_process_completions(ns_ctx->u.nvme.qpair, g_max_completions); + } +} + +static void +submit_io(struct ns_worker_ctx *ns_ctx, int queue_depth) +{ + struct perf_task *task; + uint32_t max_io_size_bytes; + + while (queue_depth-- > 0) { + task = calloc(1, sizeof(*task)); + if (task == NULL) { + fprintf(stderr, "Out of memory allocating tasks\n"); + exit(1); + } + + /* maximum extended lba format size from all active + * namespace, it's same with g_io_size_bytes for + * namespace without metadata + */ + max_io_size_bytes = g_io_size_bytes + g_max_io_md_size * g_max_io_size_blocks; + task->buf = spdk_dma_zmalloc(max_io_size_bytes, g_io_align, NULL); + if (task->buf == NULL) { + fprintf(stderr, "task->buf spdk_dma_zmalloc failed\n"); + exit(1); + } + memset(task->buf, queue_depth % 8 + 1, max_io_size_bytes); + + task->ns_ctx = ns_ctx; + + submit_single_io(task); + } +} + +static void +drain_io(struct ns_worker_ctx *ns_ctx) +{ + ns_ctx->is_draining = true; + while (ns_ctx->current_queue_depth > 0) { + check_io(ns_ctx); + } +} + +static int +init_ns_worker_ctx(struct ns_worker_ctx *ns_ctx) +{ + if (ns_ctx->entry->type == ENTRY_TYPE_AIO_FILE) { +#ifdef HAVE_LIBAIO + ns_ctx->u.aio.events = calloc(g_queue_depth, sizeof(struct io_event)); + if (!ns_ctx->u.aio.events) { + return -1; + } + ns_ctx->u.aio.ctx = 0; + if (io_setup(g_queue_depth, &ns_ctx->u.aio.ctx) < 0) { + free(ns_ctx->u.aio.events); + perror("io_setup"); + return -1; + } +#endif + } else { + /* + * TODO: If a controller has multiple namespaces, they could all use the same queue. + * For now, give each namespace/thread combination its own queue. + */ + struct spdk_nvme_io_qpair_opts opts; + + spdk_nvme_ctrlr_get_default_io_qpair_opts(ns_ctx->entry->u.nvme.ctrlr, &opts, sizeof(opts)); + if (opts.io_queue_requests < ns_ctx->entry->num_io_requests) { + opts.io_queue_requests = ns_ctx->entry->num_io_requests; + } + + ns_ctx->u.nvme.qpair = spdk_nvme_ctrlr_alloc_io_qpair(ns_ctx->entry->u.nvme.ctrlr, &opts, + sizeof(opts)); + if (!ns_ctx->u.nvme.qpair) { + printf("ERROR: spdk_nvme_ctrlr_alloc_io_qpair failed\n"); + return -1; + } + } + + return 0; +} + +static void +cleanup_ns_worker_ctx(struct ns_worker_ctx *ns_ctx) +{ + if (ns_ctx->entry->type == ENTRY_TYPE_AIO_FILE) { +#ifdef HAVE_LIBAIO + io_destroy(ns_ctx->u.aio.ctx); + free(ns_ctx->u.aio.events); +#endif + } else { + spdk_nvme_ctrlr_free_io_qpair(ns_ctx->u.nvme.qpair); + } +} + +static int +work_fn(void *arg) +{ + uint64_t tsc_end; + struct worker_thread *worker = (struct worker_thread *)arg; + struct ns_worker_ctx *ns_ctx = NULL; + + printf("Starting thread on core %u\n", worker->lcore); + + /* Allocate a queue pair for each namespace. */ + ns_ctx = worker->ns_ctx; + while (ns_ctx != NULL) { + if (init_ns_worker_ctx(ns_ctx) != 0) { + printf("ERROR: init_ns_worker_ctx() failed\n"); + return 1; + } + ns_ctx = ns_ctx->next; + } + + tsc_end = spdk_get_ticks() + g_time_in_sec * g_tsc_rate; + + /* Submit initial I/O for each namespace. */ + ns_ctx = worker->ns_ctx; + while (ns_ctx != NULL) { + submit_io(ns_ctx, g_queue_depth); + ns_ctx = ns_ctx->next; + } + + while (1) { + /* + * Check for completed I/O for each controller. A new + * I/O will be submitted in the io_complete callback + * to replace each I/O that is completed. + */ + ns_ctx = worker->ns_ctx; + while (ns_ctx != NULL) { + check_io(ns_ctx); + ns_ctx = ns_ctx->next; + } + + if (spdk_get_ticks() > tsc_end) { + break; + } + } + + ns_ctx = worker->ns_ctx; + while (ns_ctx != NULL) { + drain_io(ns_ctx); + cleanup_ns_worker_ctx(ns_ctx); + ns_ctx = ns_ctx->next; + } + + return 0; +} + +static void usage(char *program_name) +{ + printf("%s options", program_name); +#if HAVE_LIBAIO + printf(" [AIO device(s)]..."); +#endif + printf("\n"); + printf("\t[-q io depth]\n"); + printf("\t[-o io size in bytes]\n"); + printf("\t[-w io pattern type, must be one of\n"); + printf("\t\t(read, write, randread, randwrite, rw, randrw)]\n"); + printf("\t[-M rwmixread (100 for reads, 0 for writes)]\n"); + printf("\t[-L enable latency tracking via sw, default: disabled]\n"); + printf("\t\t-L for latency summary, -LL for detailed histogram\n"); + printf("\t[-l enable latency tracking via ssd (if supported), default: disabled]\n"); + printf("\t[-t time in seconds]\n"); + printf("\t[-c core mask for I/O submission/completion.]\n"); + printf("\t\t(default: 1)]\n"); + printf("\t[-D disable submission queue in controller memory buffer, default: enabled]\n"); + printf("\t[-r Transport ID for local PCIe NVMe or NVMeoF]\n"); + printf("\t Format: 'key:value [key:value] ...'\n"); + printf("\t Keys:\n"); + printf("\t trtype Transport type (e.g. PCIe, RDMA)\n"); + printf("\t adrfam Address family (e.g. IPv4, IPv6)\n"); + printf("\t traddr Transport address (e.g. 0000:04:00.0 for PCIe or 192.168.100.8 for RDMA)\n"); + printf("\t trsvcid Transport service identifier (e.g. 4420)\n"); + printf("\t subnqn Subsystem NQN (default: %s)\n", SPDK_NVMF_DISCOVERY_NQN); + printf("\t Example: -r 'trtype:PCIe traddr:0000:04:00.0' for PCIe or\n"); + printf("\t -r 'trtype:RDMA adrfam:IPv4 traddr:192.168.100.8 trsvcid:4420' for NVMeoF\n"); + printf("\t[-e metadata configuration]\n"); + printf("\t Keys:\n"); + printf("\t PRACT Protection Information Action bit (PRACT=1 or PRACT=0)\n"); + printf("\t PRCHK Control of Protection Information Checking (PRCHK=GUARD|REFTAG|APPTAG)\n"); + printf("\t Example: -e 'PRACT=0,PRCHK=GUARD|REFTAG|APPTAG'\n"); + printf("\t -e 'PRACT=1,PRCHK=GUARD'\n"); + printf("\t[-s DPDK huge memory size in MB.]\n"); + printf("\t[-m max completions per poll]\n"); + printf("\t\t(default: 0 - unlimited)\n"); + printf("\t[-i shared memory group ID]\n"); +} + +static void +check_cutoff(void *ctx, uint64_t start, uint64_t end, uint64_t count, + uint64_t total, uint64_t so_far) +{ + double so_far_pct; + double **cutoff = ctx; + + if (count == 0) { + return; + } + + so_far_pct = (double)so_far / total; + while (so_far_pct >= **cutoff && **cutoff > 0) { + printf("%9.5f%% : %9.3fus\n", **cutoff * 100, (double)end * 1000 * 1000 / g_tsc_rate); + (*cutoff)++; + } +} + +static void +print_bucket(void *ctx, uint64_t start, uint64_t end, uint64_t count, + uint64_t total, uint64_t so_far) +{ + double so_far_pct; + + if (count == 0) { + return; + } + + so_far_pct = (double)so_far * 100 / total; + printf("%9.3f - %9.3f: %9.4f%% (%9ju)\n", + (double)start * 1000 * 1000 / g_tsc_rate, + (double)end * 1000 * 1000 / g_tsc_rate, + so_far_pct, count); +} + +static void +print_performance(void) +{ + uint64_t total_io_completed, total_io_tsc; + double io_per_second, mb_per_second, average_latency, min_latency, max_latency; + double sum_ave_latency, min_latency_so_far, max_latency_so_far; + double total_io_per_second, total_mb_per_second; + int ns_count; + struct worker_thread *worker; + struct ns_worker_ctx *ns_ctx; + + total_io_per_second = 0; + total_mb_per_second = 0; + total_io_completed = 0; + total_io_tsc = 0; + min_latency_so_far = (double)UINT64_MAX; + max_latency_so_far = 0; + ns_count = 0; + + printf("========================================================\n"); + printf("%103s\n", "Latency(us)"); + printf("%-55s: %10s %10s %10s %10s %10s\n", + "Device Information", "IOPS", "MB/s", "Average", "min", "max"); + + worker = g_workers; + while (worker) { + ns_ctx = worker->ns_ctx; + while (ns_ctx) { + if (ns_ctx->io_completed != 0) { + io_per_second = (double)ns_ctx->io_completed / g_time_in_sec; + mb_per_second = io_per_second * g_io_size_bytes / (1024 * 1024); + average_latency = ((double)ns_ctx->total_tsc / ns_ctx->io_completed) * 1000 * 1000 / g_tsc_rate; + min_latency = (double)ns_ctx->min_tsc * 1000 * 1000 / g_tsc_rate; + if (min_latency < min_latency_so_far) { + min_latency_so_far = min_latency; + } + + max_latency = (double)ns_ctx->max_tsc * 1000 * 1000 / g_tsc_rate; + if (max_latency > max_latency_so_far) { + max_latency_so_far = max_latency; + } + + printf("%-43.43s from core %u: %10.2f %10.2f %10.2f %10.2f %10.2f\n", + ns_ctx->entry->name, worker->lcore, + io_per_second, mb_per_second, + average_latency, min_latency, max_latency); + total_io_per_second += io_per_second; + total_mb_per_second += mb_per_second; + total_io_completed += ns_ctx->io_completed; + total_io_tsc += ns_ctx->total_tsc; + ns_count++; + } + ns_ctx = ns_ctx->next; + } + worker = worker->next; + } + + if (ns_count != 0 && total_io_completed) { + sum_ave_latency = ((double)total_io_tsc / total_io_completed) * 1000 * 1000 / g_tsc_rate; + printf("========================================================\n"); + printf("%-55s: %10.2f %10.2f %10.2f %10.2f %10.2f\n", + "Total", total_io_per_second, total_mb_per_second, + sum_ave_latency, min_latency_so_far, max_latency_so_far); + printf("\n"); + } + + if (g_latency_sw_tracking_level == 0 || total_io_completed == 0) { + return; + } + + worker = g_workers; + while (worker) { + ns_ctx = worker->ns_ctx; + while (ns_ctx) { + const double *cutoff = g_latency_cutoffs; + + printf("Summary latency data for %-43.43s from core %u:\n", ns_ctx->entry->name, worker->lcore); + printf("=================================================================================\n"); + + spdk_histogram_data_iterate(ns_ctx->histogram, check_cutoff, &cutoff); + + printf("\n"); + ns_ctx = ns_ctx->next; + } + worker = worker->next; + } + + if (g_latency_sw_tracking_level == 1) { + return; + } + + worker = g_workers; + while (worker) { + ns_ctx = worker->ns_ctx; + while (ns_ctx) { + printf("Latency histogram for %-43.43s from core %u:\n", ns_ctx->entry->name, worker->lcore); + printf("==============================================================================\n"); + printf(" Range in us Cumulative IO count\n"); + + spdk_histogram_data_iterate(ns_ctx->histogram, print_bucket, NULL); + printf("\n"); + ns_ctx = ns_ctx->next; + } + worker = worker->next; + } + +} + +static void +print_latency_page(struct ctrlr_entry *entry) +{ + int i; + + printf("\n"); + printf("%s\n", entry->name); + printf("--------------------------------------------------------\n"); + + for (i = 0; i < 32; i++) { + if (entry->latency_page->buckets_32us[i]) { + printf("Bucket %dus - %dus: %d\n", i * 32, (i + 1) * 32, entry->latency_page->buckets_32us[i]); + } + } + for (i = 0; i < 31; i++) { + if (entry->latency_page->buckets_1ms[i]) { + printf("Bucket %dms - %dms: %d\n", i + 1, i + 2, entry->latency_page->buckets_1ms[i]); + } + } + for (i = 0; i < 31; i++) { + if (entry->latency_page->buckets_32ms[i]) + printf("Bucket %dms - %dms: %d\n", (i + 1) * 32, (i + 2) * 32, + entry->latency_page->buckets_32ms[i]); + } +} + +static void +print_latency_statistics(const char *op_name, enum spdk_nvme_intel_log_page log_page) +{ + struct ctrlr_entry *ctrlr; + + printf("%s Latency Statistics:\n", op_name); + printf("========================================================\n"); + ctrlr = g_controllers; + while (ctrlr) { + if (spdk_nvme_ctrlr_is_log_page_supported(ctrlr->ctrlr, log_page)) { + if (spdk_nvme_ctrlr_cmd_get_log_page(ctrlr->ctrlr, log_page, SPDK_NVME_GLOBAL_NS_TAG, + ctrlr->latency_page, sizeof(struct spdk_nvme_intel_rw_latency_page), 0, + enable_latency_tracking_complete, + NULL)) { + printf("nvme_ctrlr_cmd_get_log_page() failed\n"); + exit(1); + } + + g_outstanding_commands++; + } else { + printf("Controller %s: %s latency statistics not supported\n", ctrlr->name, op_name); + } + ctrlr = ctrlr->next; + } + + while (g_outstanding_commands) { + ctrlr = g_controllers; + while (ctrlr) { + spdk_nvme_ctrlr_process_admin_completions(ctrlr->ctrlr); + ctrlr = ctrlr->next; + } + } + + ctrlr = g_controllers; + while (ctrlr) { + if (spdk_nvme_ctrlr_is_log_page_supported(ctrlr->ctrlr, log_page)) { + print_latency_page(ctrlr); + } + ctrlr = ctrlr->next; + } + printf("\n"); +} + +static void +print_stats(void) +{ + print_performance(); + if (g_latency_ssd_tracking_enable) { + if (g_rw_percentage != 0) { + print_latency_statistics("Read", SPDK_NVME_INTEL_LOG_READ_CMD_LATENCY); + } + if (g_rw_percentage != 100) { + print_latency_statistics("Write", SPDK_NVME_INTEL_LOG_WRITE_CMD_LATENCY); + } + } +} + +static void +unregister_trids(void) +{ + struct trid_entry *trid_entry, *tmp; + + TAILQ_FOREACH_SAFE(trid_entry, &g_trid_list, tailq, tmp) { + free(trid_entry); + } +} + +static int +add_trid(const char *trid_str) +{ + struct trid_entry *trid_entry; + struct spdk_nvme_transport_id *trid; + char *ns; + + trid_entry = calloc(1, sizeof(*trid_entry)); + if (trid_entry == NULL) { + return -1; + } + + trid = &trid_entry->trid; + memset(trid, 0, sizeof(*trid)); + trid->trtype = SPDK_NVME_TRANSPORT_PCIE; + snprintf(trid->subnqn, sizeof(trid->subnqn), "%s", SPDK_NVMF_DISCOVERY_NQN); + + if (spdk_nvme_transport_id_parse(trid, trid_str) != 0) { + fprintf(stderr, "Invalid transport ID format '%s'\n", trid_str); + free(trid_entry); + return 1; + } + + ns = strcasestr(trid_str, "ns:"); + if (ns) { + char nsid_str[6]; /* 5 digits maximum in an nsid */ + int len; + int nsid; + + ns += 3; + + len = strcspn(ns, " \t\n"); + if (len > 5) { + fprintf(stderr, "NVMe namespace IDs must be 5 digits or less\n"); + free(trid_entry); + return 1; + } + + memcpy(nsid_str, ns, len); + nsid_str[len] = '\0'; + + nsid = atoi(nsid_str); + if (nsid <= 0 || nsid > 65535) { + fprintf(stderr, "NVMe namespace IDs must be less than 65536 and greater than 0\n"); + free(trid_entry); + return 1; + } + + trid_entry->nsid = (uint16_t)nsid; + } + + TAILQ_INSERT_TAIL(&g_trid_list, trid_entry, tailq); + return 0; +} + +static int +parse_metadata(const char *metacfg_str) +{ + const char *sep; + + if (strstr(metacfg_str, "PRACT=1") != NULL) { + g_metacfg_pract_flag = SPDK_NVME_IO_FLAGS_PRACT; + } + + sep = strchr(metacfg_str, ','); + if (!sep) { + return 0; + } + + if (strstr(sep, "PRCHK=") != NULL) { + if (strstr(sep, "GUARD") != NULL) { + g_metacfg_prchk_flags = SPDK_NVME_IO_FLAGS_PRCHK_GUARD; + } + if (strstr(sep, "REFTAG") != NULL) { + g_metacfg_prchk_flags |= SPDK_NVME_IO_FLAGS_PRCHK_REFTAG; + } + if (strstr(sep, "APPTAG") != NULL) { + g_metacfg_prchk_flags |= SPDK_NVME_IO_FLAGS_PRCHK_APPTAG; + } + } + + return 0; +} + +static int +parse_args(int argc, char **argv) +{ + const char *workload_type; + int op; + bool mix_specified = false; + + /* default value */ + g_queue_depth = 0; + g_io_size_bytes = 0; + workload_type = NULL; + g_time_in_sec = 0; + g_rw_percentage = -1; + g_core_mask = NULL; + g_max_completions = 0; + + while ((op = getopt(argc, argv, "c:e:i:lm:o:q:r:s:t:w:DLM:")) != -1) { + switch (op) { + case 'c': + g_core_mask = optarg; + break; + case 'e': + if (parse_metadata(optarg)) { + usage(argv[0]); + return 1; + } + break; + case 'i': + g_shm_id = atoi(optarg); + break; + case 'l': + g_latency_ssd_tracking_enable = true; + break; + case 'm': + g_max_completions = atoi(optarg); + break; + case 'o': + g_io_size_bytes = atoi(optarg); + break; + case 'q': + g_queue_depth = atoi(optarg); + break; + case 'r': + if (add_trid(optarg)) { + usage(argv[0]); + return 1; + } + break; + case 's': + g_dpdk_mem = atoi(optarg); + break; + case 't': + g_time_in_sec = atoi(optarg); + break; + case 'w': + workload_type = optarg; + break; + case 'D': + g_disable_sq_cmb = 1; + break; + case 'L': + g_latency_sw_tracking_level++; + break; + case 'M': + g_rw_percentage = atoi(optarg); + mix_specified = true; + break; + default: + usage(argv[0]); + return 1; + } + } + + if (!g_queue_depth) { + usage(argv[0]); + return 1; + } + if (!g_io_size_bytes) { + usage(argv[0]); + return 1; + } + if (!workload_type) { + usage(argv[0]); + return 1; + } + if (!g_time_in_sec) { + usage(argv[0]); + return 1; + } + + if (strcmp(workload_type, "read") && + strcmp(workload_type, "write") && + strcmp(workload_type, "randread") && + strcmp(workload_type, "randwrite") && + strcmp(workload_type, "rw") && + strcmp(workload_type, "randrw")) { + fprintf(stderr, + "io pattern type must be one of\n" + "(read, write, randread, randwrite, rw, randrw)\n"); + return 1; + } + + if (!strcmp(workload_type, "read") || + !strcmp(workload_type, "randread")) { + g_rw_percentage = 100; + } + + if (!strcmp(workload_type, "write") || + !strcmp(workload_type, "randwrite")) { + g_rw_percentage = 0; + } + + if (!strcmp(workload_type, "read") || + !strcmp(workload_type, "randread") || + !strcmp(workload_type, "write") || + !strcmp(workload_type, "randwrite")) { + if (mix_specified) { + fprintf(stderr, "Ignoring -M option... Please use -M option" + " only when using rw or randrw.\n"); + } + } + + if (!strcmp(workload_type, "rw") || + !strcmp(workload_type, "randrw")) { + if (g_rw_percentage < 0 || g_rw_percentage > 100) { + fprintf(stderr, + "-M must be specified to value from 0 to 100 " + "for rw or randrw.\n"); + return 1; + } + } + + if (!strcmp(workload_type, "read") || + !strcmp(workload_type, "write") || + !strcmp(workload_type, "rw")) { + g_is_random = 0; + } else { + g_is_random = 1; + } + + if (TAILQ_EMPTY(&g_trid_list)) { + /* If no transport IDs specified, default to enumerating all local PCIe devices */ + add_trid("trtype:PCIe"); + } else { + struct trid_entry *trid_entry, *trid_entry_tmp; + + g_no_pci = true; + /* check whether there is local PCIe type */ + TAILQ_FOREACH_SAFE(trid_entry, &g_trid_list, tailq, trid_entry_tmp) { + if (trid_entry->trid.trtype == SPDK_NVME_TRANSPORT_PCIE) { + g_no_pci = false; + break; + } + } + } + + g_aio_optind = optind; + + return 0; +} + +static int +register_workers(void) +{ + uint32_t i; + struct worker_thread *worker; + + g_workers = NULL; + g_num_workers = 0; + + SPDK_ENV_FOREACH_CORE(i) { + worker = calloc(1, sizeof(*worker)); + if (worker == NULL) { + fprintf(stderr, "Unable to allocate worker\n"); + return -1; + } + + worker->lcore = i; + worker->next = g_workers; + g_workers = worker; + g_num_workers++; + } + + return 0; +} + +static void +unregister_workers(void) +{ + struct worker_thread *worker = g_workers; + + /* Free namespace context and worker thread */ + while (worker) { + struct worker_thread *next_worker = worker->next; + struct ns_worker_ctx *ns_ctx = worker->ns_ctx; + + while (ns_ctx) { + struct ns_worker_ctx *next_ns_ctx = ns_ctx->next; + spdk_histogram_data_free(ns_ctx->histogram); + free(ns_ctx); + ns_ctx = next_ns_ctx; + } + + free(worker); + worker = next_worker; + } +} + +static bool +probe_cb(void *cb_ctx, const struct spdk_nvme_transport_id *trid, + struct spdk_nvme_ctrlr_opts *opts) +{ + if (trid->trtype != SPDK_NVME_TRANSPORT_PCIE) { + printf("Attaching to NVMe over Fabrics controller at %s:%s: %s\n", + trid->traddr, trid->trsvcid, + trid->subnqn); + } else { + if (g_disable_sq_cmb) { + opts->use_cmb_sqs = false; + } + + printf("Attaching to NVMe Controller at %s\n", + trid->traddr); + } + + /* Set io_queue_size to UINT16_MAX, NVMe driver + * will then reduce this to MQES to maximize + * the io_queue_size as much as possible. + */ + opts->io_queue_size = UINT16_MAX; + + return true; +} + +static void +attach_cb(void *cb_ctx, const struct spdk_nvme_transport_id *trid, + struct spdk_nvme_ctrlr *ctrlr, const struct spdk_nvme_ctrlr_opts *opts) +{ + struct trid_entry *trid_entry = cb_ctx; + struct spdk_pci_addr pci_addr; + struct spdk_pci_device *pci_dev; + struct spdk_pci_id pci_id; + + g_controllers_found++; + if (trid->trtype != SPDK_NVME_TRANSPORT_PCIE) { + printf("Attached to NVMe over Fabrics controller at %s:%s: %s\n", + trid->traddr, trid->trsvcid, + trid->subnqn); + } else { + if (spdk_pci_addr_parse(&pci_addr, trid->traddr)) { + return; + } + + pci_dev = spdk_nvme_ctrlr_get_pci_device(ctrlr); + if (!pci_dev) { + return; + } + + pci_id = spdk_pci_device_get_id(pci_dev); + + printf("Attached to NVMe Controller at %s [%04x:%04x]\n", + trid->traddr, + pci_id.vendor_id, pci_id.device_id); + } + + register_ctrlr(ctrlr, trid_entry); +} + +static int +register_controllers(void) +{ + struct trid_entry *trid_entry; + + printf("Initializing NVMe Controllers\n"); + + TAILQ_FOREACH(trid_entry, &g_trid_list, tailq) { + if (spdk_nvme_probe(&trid_entry->trid, trid_entry, probe_cb, attach_cb, NULL) != 0) { + fprintf(stderr, "spdk_nvme_probe() failed for transport address '%s'\n", + trid_entry->trid.traddr); + return -1; + } + } + + return 0; +} + +static void +unregister_controllers(void) +{ + struct ctrlr_entry *entry = g_controllers; + + while (entry) { + struct ctrlr_entry *next = entry->next; + spdk_dma_free(entry->latency_page); + if (g_latency_ssd_tracking_enable && + spdk_nvme_ctrlr_is_feature_supported(entry->ctrlr, SPDK_NVME_INTEL_FEAT_LATENCY_TRACKING)) { + set_latency_tracking_feature(entry->ctrlr, false); + } + spdk_nvme_detach(entry->ctrlr); + free(entry); + entry = next; + } +} + +static int +register_aio_files(int argc, char **argv) +{ +#if HAVE_LIBAIO + int i; + + /* Treat everything after the options as files for AIO */ + for (i = g_aio_optind; i < argc; i++) { + if (register_aio_file(argv[i]) != 0) { + return 1; + } + } +#endif /* HAVE_LIBAIO */ + + return 0; +} + +static int +associate_workers_with_ns(void) +{ + struct ns_entry *entry = g_namespaces; + struct worker_thread *worker = g_workers; + struct ns_worker_ctx *ns_ctx; + int i, count; + + count = g_num_namespaces > g_num_workers ? g_num_namespaces : g_num_workers; + + for (i = 0; i < count; i++) { + if (entry == NULL) { + break; + } + + ns_ctx = malloc(sizeof(struct ns_worker_ctx)); + if (!ns_ctx) { + return -1; + } + memset(ns_ctx, 0, sizeof(*ns_ctx)); + + printf("Associating %s with lcore %d\n", entry->name, worker->lcore); + ns_ctx->min_tsc = UINT64_MAX; + ns_ctx->entry = entry; + ns_ctx->next = worker->ns_ctx; + ns_ctx->histogram = spdk_histogram_data_alloc(); + worker->ns_ctx = ns_ctx; + + worker = worker->next; + if (worker == NULL) { + worker = g_workers; + } + + entry = entry->next; + if (entry == NULL) { + entry = g_namespaces; + } + + } + + return 0; +} + +int main(int argc, char **argv) +{ + int rc; + struct worker_thread *worker, *master_worker; + unsigned master_core; + struct spdk_env_opts opts; + + rc = parse_args(argc, argv); + if (rc != 0) { + return rc; + } + + spdk_env_opts_init(&opts); + opts.name = "perf"; + opts.shm_id = g_shm_id; + if (g_core_mask) { + opts.core_mask = g_core_mask; + } + + if (g_dpdk_mem) { + opts.mem_size = g_dpdk_mem; + } + if (g_no_pci) { + opts.no_pci = g_no_pci; + } + if (spdk_env_init(&opts) < 0) { + fprintf(stderr, "Unable to initialize SPDK env\n"); + rc = -1; + goto cleanup; + } + + g_tsc_rate = spdk_get_ticks_hz(); + + if (register_workers() != 0) { + rc = -1; + goto cleanup; + } + + if (register_aio_files(argc, argv) != 0) { + rc = -1; + goto cleanup; + } + + if (register_controllers() != 0) { + rc = -1; + goto cleanup; + } + + if (g_warn) { + printf("WARNING: Some requested NVMe devices were skipped\n"); + } + + if (g_num_namespaces == 0) { + fprintf(stderr, "No valid NVMe controllers or AIO devices found\n"); + return 0; + } + + if (associate_workers_with_ns() != 0) { + rc = -1; + goto cleanup; + } + + printf("Initialization complete. Launching workers.\n"); + + /* Launch all of the slave workers */ + master_core = spdk_env_get_current_core(); + master_worker = NULL; + worker = g_workers; + while (worker != NULL) { + if (worker->lcore != master_core) { + spdk_env_thread_launch_pinned(worker->lcore, work_fn, worker); + } else { + assert(master_worker == NULL); + master_worker = worker; + } + worker = worker->next; + } + + assert(master_worker != NULL); + rc = work_fn(master_worker); + + spdk_env_thread_wait_all(); + + print_stats(); + +cleanup: + unregister_trids(); + unregister_namespaces(); + unregister_controllers(); + unregister_workers(); + + if (rc != 0) { + fprintf(stderr, "%s: errors occured\n", argv[0]); + } + + return rc; +} |