#include <stddef.h>
#include <signal.h>
#include <inttypes.h>
+#include <math.h>
+
+#ifdef CONFIG_LIBAIO
+#include <libaio.h>
+#endif
+
+#ifdef CONFIG_LIBNUMA
+#include <numa.h>
+#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <sched.h>
#include "../arch/arch.h"
+#include "../os/os.h"
#include "../lib/types.h"
+#include "../lib/roundup.h"
+#include "../lib/rand.h"
+#include "../minmax.h"
#include "../os/linux/io_uring.h"
-
-#define min(a, b) ((a < b) ? (a) : (b))
+#include "../engines/nvme.h"
struct io_sq_ring {
unsigned *head;
struct file {
unsigned long max_blocks;
+ unsigned long max_size;
+ unsigned long cur_off;
unsigned pending_ios;
+ unsigned int nsid; /* nsid field required for nvme-passthrough */
+ unsigned int lba_shift; /* lba_shift field required for nvme-passthrough */
int real_fd;
int fixed_fd;
+ int fileno;
};
+#define PLAT_BITS 6
+#define PLAT_VAL (1 << PLAT_BITS)
+#define PLAT_GROUP_NR 29
+#define PLAT_NR (PLAT_GROUP_NR * PLAT_VAL)
+
struct submitter {
pthread_t thread;
int ring_fd;
+ int enter_ring_fd;
int index;
struct io_sq_ring sq_ring;
struct io_uring_sqe *sqes;
struct io_cq_ring cq_ring;
int inflight;
+ int tid;
unsigned long reaps;
unsigned long done;
unsigned long calls;
__s32 *fds;
+ struct taus258_state rand_state;
+
+ unsigned long *clock_batch;
+ int clock_index;
+ unsigned long *plat;
+
+#ifdef CONFIG_LIBAIO
+ io_context_t aio_ctx;
+#endif
+
+ int numa_node;
+ const char *filename;
+
struct file files[MAX_FDS];
unsigned nr_files;
unsigned cur_file;
static struct submitter *submitter;
static volatile int finish;
+static int stats_running;
+static unsigned long max_iops;
+static long t_io_uring_page_size;
static int depth = DEPTH;
static int batch_submit = BATCH_SUBMIT;
static int bs = BS;
static int polled = 1; /* use IO polling */
static int fixedbufs = 1; /* use fixed user buffers */
+static int dma_map; /* pre-map DMA buffers */
static int register_files = 1; /* use fixed files */
static int buffered = 0; /* use buffered IO, not O_DIRECT */
static int sq_thread_poll = 0; /* use kernel submission/poller thread */
static int sq_thread_cpu = -1; /* pin above thread to this CPU */
static int do_nop = 0; /* no-op SQ ring commands */
static int nthreads = 1;
+static int stats = 0; /* generate IO stats */
+static int aio = 0; /* use libaio */
+static int runtime = 0; /* runtime */
+static int random_io = 1; /* random or sequential IO */
+static int register_ring = 1; /* register ring */
+static int use_sync = 0; /* use preadv2 */
+static int numa_placement = 0; /* set to node of device */
+static int pt = 0; /* passthrough I/O or not */
+
+static unsigned long tsc_rate;
+
+#define TSC_RATE_FILE "tsc-rate"
static int vectored = 1;
+static float plist[] = { 1.0, 5.0, 10.0, 20.0, 30.0, 40.0, 50.0, 60.0, 70.0,
+ 80.0, 90.0, 95.0, 99.0, 99.5, 99.9, 99.95, 99.99 };
+static int plist_len = 17;
+
+#ifndef IORING_REGISTER_MAP_BUFFERS
+#define IORING_REGISTER_MAP_BUFFERS 26
+struct io_uring_map_buffers {
+ __s32 fd;
+ __u32 buf_start;
+ __u32 buf_end;
+ __u32 flags;
+ __u64 rsvd[2];
+};
+#endif
+
+static int nvme_identify(int fd, __u32 nsid, enum nvme_identify_cns cns,
+ enum nvme_csi csi, void *data)
+{
+ struct nvme_passthru_cmd cmd = {
+ .opcode = nvme_admin_identify,
+ .nsid = nsid,
+ .addr = (__u64)(uintptr_t)data,
+ .data_len = NVME_IDENTIFY_DATA_SIZE,
+ .cdw10 = cns,
+ .cdw11 = csi << NVME_IDENTIFY_CSI_SHIFT,
+ .timeout_ms = NVME_DEFAULT_IOCTL_TIMEOUT,
+ };
+
+ return ioctl(fd, NVME_IOCTL_ADMIN_CMD, &cmd);
+}
+
+static int nvme_get_info(int fd, __u32 *nsid, __u32 *lba_sz, __u64 *nlba)
+{
+ struct nvme_id_ns ns;
+ int namespace_id;
+ int err;
+
+ namespace_id = ioctl(fd, NVME_IOCTL_ID);
+ if (namespace_id < 0) {
+ fprintf(stderr, "error failed to fetch namespace-id\n");
+ close(fd);
+ return -errno;
+ }
+
+ /*
+ * Identify namespace to get namespace-id, namespace size in LBA's
+ * and LBA data size.
+ */
+ err = nvme_identify(fd, namespace_id, NVME_IDENTIFY_CNS_NS,
+ NVME_CSI_NVM, &ns);
+ if (err) {
+ fprintf(stderr, "error failed to fetch identify namespace\n");
+ close(fd);
+ return err;
+ }
+
+ *nsid = namespace_id;
+ *lba_sz = 1 << ns.lbaf[(ns.flbas & 0x0f)].ds;
+ *nlba = ns.nsze;
+
+ return 0;
+}
+
+static unsigned long cycles_to_nsec(unsigned long cycles)
+{
+ uint64_t val;
+
+ if (!tsc_rate)
+ return cycles;
+
+ val = cycles * 1000000000ULL;
+ return val / tsc_rate;
+}
+
+static unsigned long plat_idx_to_val(unsigned int idx)
+{
+ unsigned int error_bits;
+ unsigned long k, base;
+
+ assert(idx < PLAT_NR);
+
+ /* MSB <= (PLAT_BITS-1), cannot be rounded off. Use
+ * all bits of the sample as index */
+ if (idx < (PLAT_VAL << 1))
+ return cycles_to_nsec(idx);
+
+ /* Find the group and compute the minimum value of that group */
+ error_bits = (idx >> PLAT_BITS) - 1;
+ base = ((unsigned long) 1) << (error_bits + PLAT_BITS);
+
+ /* Find its bucket number of the group */
+ k = idx % PLAT_VAL;
+
+ /* Return the mean of the range of the bucket */
+ return cycles_to_nsec(base + ((k + 0.5) * (1 << error_bits)));
+}
+
+unsigned int calculate_clat_percentiles(unsigned long *io_u_plat,
+ unsigned long nr, unsigned long **output,
+ unsigned long *maxv, unsigned long *minv)
+{
+ unsigned long sum = 0;
+ unsigned int len = plist_len, i, j = 0;
+ unsigned long *ovals = NULL;
+ bool is_last;
+
+ *minv = -1UL;
+ *maxv = 0;
+
+ ovals = malloc(len * sizeof(*ovals));
+ if (!ovals)
+ return 0;
+
+ /*
+ * Calculate bucket values, note down max and min values
+ */
+ is_last = false;
+ for (i = 0; i < PLAT_NR && !is_last; i++) {
+ sum += io_u_plat[i];
+ while (sum >= ((long double) plist[j] / 100.0 * nr)) {
+ assert(plist[j] <= 100.0);
+
+ ovals[j] = plat_idx_to_val(i);
+ if (ovals[j] < *minv)
+ *minv = ovals[j];
+ if (ovals[j] > *maxv)
+ *maxv = ovals[j];
+
+ is_last = (j == len - 1) != 0;
+ if (is_last)
+ break;
+
+ j++;
+ }
+ }
+
+ if (!is_last)
+ fprintf(stderr, "error calculating latency percentiles\n");
+
+ *output = ovals;
+ return len;
+}
+
+static void show_clat_percentiles(unsigned long *io_u_plat, unsigned long nr,
+ unsigned int precision)
+{
+ unsigned int divisor, len, i, j = 0;
+ unsigned long minv, maxv;
+ unsigned long *ovals;
+ int per_line, scale_down, time_width;
+ bool is_last;
+ char fmt[32];
+
+ len = calculate_clat_percentiles(io_u_plat, nr, &ovals, &maxv, &minv);
+ if (!len || !ovals)
+ goto out;
+
+ if (!tsc_rate) {
+ scale_down = 0;
+ divisor = 1;
+ printf(" percentiles (tsc ticks):\n |");
+ } else if (minv > 2000 && maxv > 99999) {
+ scale_down = 1;
+ divisor = 1000;
+ printf(" percentiles (usec):\n |");
+ } else {
+ scale_down = 0;
+ divisor = 1;
+ printf(" percentiles (nsec):\n |");
+ }
+
+ time_width = max(5, (int) (log10(maxv / divisor) + 1));
+ snprintf(fmt, sizeof(fmt), " %%%u.%ufth=[%%%dllu]%%c", precision + 3,
+ precision, time_width);
+ /* fmt will be something like " %5.2fth=[%4llu]%c" */
+ per_line = (80 - 7) / (precision + 10 + time_width);
+
+ for (j = 0; j < len; j++) {
+ /* for formatting */
+ if (j != 0 && (j % per_line) == 0)
+ printf(" |");
+
+ /* end of the list */
+ is_last = (j == len - 1) != 0;
+
+ for (i = 0; i < scale_down; i++)
+ ovals[j] = (ovals[j] + 999) / 1000;
+
+ printf(fmt, plist[j], ovals[j], is_last ? '\n' : ',');
+
+ if (is_last)
+ break;
+
+ if ((j % per_line) == per_line - 1) /* for formatting */
+ printf("\n");
+ }
+
+out:
+ free(ovals);
+}
+
+#ifdef ARCH_HAVE_CPU_CLOCK
+static unsigned int plat_val_to_idx(unsigned long val)
+{
+ unsigned int msb, error_bits, base, offset, idx;
+
+ /* Find MSB starting from bit 0 */
+ if (val == 0)
+ msb = 0;
+ else
+ msb = (sizeof(val)*8) - __builtin_clzll(val) - 1;
+
+ /*
+ * MSB <= (PLAT_BITS-1), cannot be rounded off. Use
+ * all bits of the sample as index
+ */
+ if (msb <= PLAT_BITS)
+ return val;
+
+ /* Compute the number of error bits to discard*/
+ error_bits = msb - PLAT_BITS;
+
+ /* Compute the number of buckets before the group */
+ base = (error_bits + 1) << PLAT_BITS;
+
+ /*
+ * Discard the error bits and apply the mask to find the
+ * index for the buckets in the group
+ */
+ offset = (PLAT_VAL - 1) & (val >> error_bits);
+
+ /* Make sure the index does not exceed (array size - 1) */
+ idx = (base + offset) < (PLAT_NR - 1) ?
+ (base + offset) : (PLAT_NR - 1);
+
+ return idx;
+}
+#endif
+
+static void add_stat(struct submitter *s, int clock_index, int nr)
+{
+#ifdef ARCH_HAVE_CPU_CLOCK
+ unsigned long cycles;
+ unsigned int pidx;
+
+ if (!s->finish && clock_index) {
+ cycles = get_cpu_clock();
+ cycles -= s->clock_batch[clock_index];
+ pidx = plat_val_to_idx(cycles);
+ s->plat[pidx] += nr;
+ }
+#endif
+}
+
+static int io_uring_map_buffers(struct submitter *s)
+{
+ struct io_uring_map_buffers map = {
+ .fd = s->files[0].real_fd,
+ .buf_end = depth,
+ };
+
+ if (do_nop)
+ return 0;
+ if (s->nr_files > 1)
+ fprintf(stdout, "Mapping buffers may not work with multiple files\n");
+
+ return syscall(__NR_io_uring_register, s->ring_fd,
+ IORING_REGISTER_MAP_BUFFERS, &map, 1);
+}
+
static int io_uring_register_buffers(struct submitter *s)
{
if (do_nop)
return 0;
return syscall(__NR_io_uring_register, s->ring_fd,
- IORING_REGISTER_BUFFERS, s->iovecs, depth);
+ IORING_REGISTER_BUFFERS, s->iovecs, roundup_pow2(depth));
}
static int io_uring_register_files(struct submitter *s)
static int io_uring_setup(unsigned entries, struct io_uring_params *p)
{
- return syscall(__NR_io_uring_setup, entries, p);
+ int ret;
+
+ /*
+ * Clamp CQ ring size at our SQ ring size, we don't need more entries
+ * than that.
+ */
+ p->flags |= IORING_SETUP_CQSIZE;
+ p->cq_entries = entries;
+
+ p->flags |= IORING_SETUP_COOP_TASKRUN;
+ p->flags |= IORING_SETUP_SINGLE_ISSUER;
+ p->flags |= IORING_SETUP_DEFER_TASKRUN;
+retry:
+ ret = syscall(__NR_io_uring_setup, entries, p);
+ if (!ret)
+ return 0;
+
+ if (errno == EINVAL && p->flags & IORING_SETUP_COOP_TASKRUN) {
+ p->flags &= ~IORING_SETUP_COOP_TASKRUN;
+ goto retry;
+ }
+ if (errno == EINVAL && p->flags & IORING_SETUP_SINGLE_ISSUER) {
+ p->flags &= ~IORING_SETUP_SINGLE_ISSUER;
+ goto retry;
+ }
+ if (errno == EINVAL && p->flags & IORING_SETUP_DEFER_TASKRUN) {
+ p->flags &= ~IORING_SETUP_DEFER_TASKRUN;
+ goto retry;
+ }
+
+ return ret;
}
static void io_uring_probe(int fd)
static int io_uring_enter(struct submitter *s, unsigned int to_submit,
unsigned int min_complete, unsigned int flags)
{
- return syscall(__NR_io_uring_enter, s->ring_fd, to_submit, min_complete,
- flags, NULL, 0);
+ if (register_ring)
+ flags |= IORING_ENTER_REGISTERED_RING;
+#ifdef FIO_ARCH_HAS_SYSCALL
+ return __do_syscall6(__NR_io_uring_enter, s->enter_ring_fd, to_submit,
+ min_complete, flags, NULL, 0);
+#else
+ return syscall(__NR_io_uring_enter, s->enter_ring_fd, to_submit,
+ min_complete, flags, NULL, 0);
+#endif
}
-#ifndef CONFIG_HAVE_GETTID
-static int gettid(void)
+static unsigned file_depth(struct submitter *s)
{
- return syscall(__NR_gettid);
+ return (depth + s->nr_files - 1) / s->nr_files;
}
-#endif
-static unsigned file_depth(struct submitter *s)
+static unsigned long long get_offset(struct submitter *s, struct file *f)
{
- return (depth + s->nr_files - 1) / s->nr_files;
+ unsigned long long offset;
+ long r;
+
+ if (random_io) {
+ r = __rand64(&s->rand_state);
+ offset = (r % (f->max_blocks - 1)) * bs;
+ } else {
+ offset = f->cur_off;
+ f->cur_off += bs;
+ if (f->cur_off + bs > f->max_size)
+ f->cur_off = 0;
+ }
+
+ return offset;
}
static void init_io(struct submitter *s, unsigned index)
{
struct io_uring_sqe *sqe = &s->sqes[index];
- unsigned long offset;
struct file *f;
- long r;
if (do_nop) {
sqe->opcode = IORING_OP_NOP;
}
f->pending_ios++;
- r = lrand48();
- offset = (r % (f->max_blocks - 1)) * bs;
-
if (register_files) {
sqe->flags = IOSQE_FIXED_FILE;
sqe->fd = f->fixed_fd;
sqe->buf_index = 0;
}
sqe->ioprio = 0;
- sqe->off = offset;
- sqe->user_data = (unsigned long) f;
+ sqe->off = get_offset(s, f);
+ sqe->user_data = (unsigned long) f->fileno;
+ if (stats && stats_running)
+ sqe->user_data |= ((uint64_t)s->clock_index << 32);
+}
+
+static void init_io_pt(struct submitter *s, unsigned index)
+{
+ struct io_uring_sqe *sqe = &s->sqes[index << 1];
+ unsigned long offset;
+ struct file *f;
+ struct nvme_uring_cmd *cmd;
+ unsigned long long slba;
+ unsigned long long nlb;
+ long r;
+
+ if (s->nr_files == 1) {
+ f = &s->files[0];
+ } else {
+ f = &s->files[s->cur_file];
+ if (f->pending_ios >= file_depth(s)) {
+ s->cur_file++;
+ if (s->cur_file == s->nr_files)
+ s->cur_file = 0;
+ f = &s->files[s->cur_file];
+ }
+ }
+ f->pending_ios++;
+
+ if (random_io) {
+ r = __rand64(&s->rand_state);
+ offset = (r % (f->max_blocks - 1)) * bs;
+ } else {
+ offset = f->cur_off;
+ f->cur_off += bs;
+ if (f->cur_off + bs > f->max_size)
+ f->cur_off = 0;
+ }
+
+ if (register_files) {
+ sqe->fd = f->fixed_fd;
+ sqe->flags = IOSQE_FIXED_FILE;
+ } else {
+ sqe->fd = f->real_fd;
+ sqe->flags = 0;
+ }
+ sqe->opcode = IORING_OP_URING_CMD;
+ sqe->user_data = (unsigned long) f->fileno;
+ if (stats)
+ sqe->user_data |= ((__u64) s->clock_index << 32ULL);
+ sqe->cmd_op = NVME_URING_CMD_IO;
+ slba = offset >> f->lba_shift;
+ nlb = (bs >> f->lba_shift) - 1;
+ cmd = (struct nvme_uring_cmd *)&sqe->cmd;
+ /* cdw10 and cdw11 represent starting slba*/
+ cmd->cdw10 = slba & 0xffffffff;
+ cmd->cdw11 = slba >> 32;
+ /* cdw12 represent number of lba to be read*/
+ cmd->cdw12 = nlb;
+ cmd->addr = (unsigned long) s->iovecs[index].iov_base;
+ cmd->data_len = bs;
+ if (fixedbufs) {
+ sqe->uring_cmd_flags = IORING_URING_CMD_FIXED;
+ sqe->buf_index = index;
+ }
+ cmd->nsid = f->nsid;
+ cmd->opcode = 2;
}
-static int prep_more_ios(struct submitter *s, int max_ios)
+static int prep_more_ios_uring(struct submitter *s, int max_ios)
{
struct io_sq_ring *ring = &s->sq_ring;
- unsigned index, tail, next_tail, prepped = 0;
+ unsigned head, index, tail, next_tail, prepped = 0;
+
+ if (sq_thread_poll)
+ head = atomic_load_acquire(ring->head);
+ else
+ head = *ring->head;
next_tail = tail = *ring->tail;
do {
next_tail++;
- if (next_tail == atomic_load_acquire(ring->head))
+ if (next_tail == head)
break;
index = tail & sq_ring_mask;
- init_io(s, index);
- ring->array[index] = index;
+ if (pt)
+ init_io_pt(s, index);
+ else
+ init_io(s, index);
prepped++;
tail = next_tail;
} while (prepped < max_ios);
if (fstat(f->real_fd, &st) < 0)
return -1;
- if (S_ISBLK(st.st_mode)) {
+ if (pt) {
+ __u64 nlba;
+ __u32 lbs;
+ int ret;
+
+ if (!S_ISCHR(st.st_mode)) {
+ fprintf(stderr, "passthrough works with only nvme-ns "
+ "generic devices (/dev/ngXnY)\n");
+ return -1;
+ }
+ ret = nvme_get_info(f->real_fd, &f->nsid, &lbs, &nlba);
+ if (ret)
+ return -1;
+ if ((bs % lbs) != 0) {
+ printf("error: bs:%d should be a multiple logical_block_size:%d\n",
+ bs, lbs);
+ return -1;
+ }
+ f->max_blocks = nlba / bs;
+ f->max_size = nlba;
+ f->lba_shift = ilog2(lbs);
+ return 0;
+ } else if (S_ISBLK(st.st_mode)) {
unsigned long long bytes;
if (ioctl(f->real_fd, BLKGETSIZE64, &bytes) != 0)
return -1;
f->max_blocks = bytes / bs;
+ f->max_size = bytes;
return 0;
} else if (S_ISREG(st.st_mode)) {
f->max_blocks = st.st_size / bs;
+ f->max_size = st.st_size;
return 0;
}
return -1;
}
-static int reap_events(struct submitter *s)
+static int reap_events_uring(struct submitter *s)
{
struct io_cq_ring *ring = &s->cq_ring;
struct io_uring_cqe *cqe;
unsigned head, reaped = 0;
+ int last_idx = -1, stat_nr = 0;
head = *ring->head;
do {
struct file *f;
- read_barrier();
if (head == atomic_load_acquire(ring->tail))
break;
cqe = &ring->cqes[head & cq_ring_mask];
if (!do_nop) {
- f = (struct file *) (uintptr_t) cqe->user_data;
+ int fileno = cqe->user_data & 0xffffffff;
+
+ f = &s->files[fileno];
f->pending_ios--;
if (cqe->res != bs) {
printf("io: unexpected ret=%d\n", cqe->res);
return -1;
}
}
+ if (stats) {
+ int clock_index = cqe->user_data >> 32;
+
+ if (last_idx != clock_index) {
+ if (last_idx != -1) {
+ add_stat(s, last_idx, stat_nr);
+ stat_nr = 0;
+ }
+ last_idx = clock_index;
+ }
+ stat_nr++;
+ }
reaped++;
head++;
} while (1);
+ if (stat_nr)
+ add_stat(s, last_idx, stat_nr);
+
if (reaped) {
s->inflight -= reaped;
atomic_store_release(ring->head, head);
return reaped;
}
-static void *submitter_fn(void *data)
+static int reap_events_uring_pt(struct submitter *s)
{
- struct submitter *s = data;
- struct io_sq_ring *ring = &s->sq_ring;
- int ret, prepped;
-
- printf("submitter=%d\n", gettid());
-
- srand48(pthread_self());
+ struct io_cq_ring *ring = &s->cq_ring;
+ struct io_uring_cqe *cqe;
+ unsigned head, reaped = 0;
+ int last_idx = -1, stat_nr = 0;
+ unsigned index;
+ int fileno;
- prepped = 0;
+ head = *ring->head;
do {
- int to_wait, to_submit, this_reap, to_prep;
- unsigned ring_flags = 0;
+ struct file *f;
- if (!prepped && s->inflight < depth) {
- to_prep = min(depth - s->inflight, batch_submit);
- prepped = prep_more_ios(s, to_prep);
+ if (head == atomic_load_acquire(ring->tail))
+ break;
+ index = head & cq_ring_mask;
+ cqe = &ring->cqes[index << 1];
+ fileno = cqe->user_data & 0xffffffff;
+ f = &s->files[fileno];
+ f->pending_ios--;
+
+ if (cqe->res != 0) {
+ printf("io: unexpected ret=%d\n", cqe->res);
+ if (polled && cqe->res == -EINVAL)
+ printf("passthrough doesn't support polled IO\n");
+ return -1;
}
- s->inflight += prepped;
-submit_more:
- to_submit = prepped;
-submit:
- if (to_submit && (s->inflight + to_submit <= depth))
- to_wait = 0;
- else
- to_wait = min(s->inflight + to_submit, batch_complete);
-
- /*
- * Only need to call io_uring_enter if we're not using SQ thread
- * poll, or if IORING_SQ_NEED_WAKEUP is set.
- */
- if (sq_thread_poll)
- ring_flags = atomic_load_acquire(ring->flags);
- if (!sq_thread_poll || ring_flags & IORING_SQ_NEED_WAKEUP) {
- unsigned flags = 0;
-
- if (to_wait)
- flags = IORING_ENTER_GETEVENTS;
- if (ring_flags & IORING_SQ_NEED_WAKEUP)
- flags |= IORING_ENTER_SQ_WAKEUP;
- ret = io_uring_enter(s, to_submit, to_wait, flags);
- s->calls++;
- } else {
- /* for SQPOLL, we submitted it all effectively */
- ret = to_submit;
+ if (stats) {
+ int clock_index = cqe->user_data >> 32;
+
+ if (last_idx != clock_index) {
+ if (last_idx != -1) {
+ add_stat(s, last_idx, stat_nr);
+ stat_nr = 0;
+ }
+ last_idx = clock_index;
+ }
+ stat_nr++;
}
+ reaped++;
+ head++;
+ } while (1);
- /*
- * For non SQ thread poll, we already got the events we needed
- * through the io_uring_enter() above. For SQ thread poll, we
- * need to loop here until we find enough events.
- */
- this_reap = 0;
- do {
- int r;
- r = reap_events(s);
- if (r == -1) {
- s->finish = 1;
- break;
- } else if (r > 0)
- this_reap += r;
- } while (sq_thread_poll && this_reap < to_wait);
- s->reaps += this_reap;
+ if (stat_nr)
+ add_stat(s, last_idx, stat_nr);
- if (ret >= 0) {
- if (!ret) {
- to_submit = 0;
- if (s->inflight)
- goto submit;
- continue;
- } else if (ret < to_submit) {
- int diff = to_submit - ret;
+ if (reaped) {
+ s->inflight -= reaped;
+ atomic_store_release(ring->head, head);
+ }
+ return reaped;
+}
- s->done += ret;
- prepped -= diff;
- goto submit_more;
- }
- s->done += ret;
- prepped = 0;
- continue;
- } else if (ret < 0) {
- if (errno == EAGAIN) {
- if (s->finish)
- break;
- if (this_reap)
- goto submit;
- to_submit = 0;
- goto submit;
- }
- printf("io_submit: %s\n", strerror(errno));
- break;
- }
- } while (!s->finish);
+static void set_affinity(struct submitter *s)
+{
+#ifdef CONFIG_LIBNUMA
+ struct bitmask *mask;
- finish = 1;
- return NULL;
-}
+ if (s->numa_node == -1)
+ return;
-static struct submitter *get_submitter(int offset)
-{
- void *ret;
+ numa_set_preferred(s->numa_node);
- ret = submitter;
- if (offset)
- ret += offset * (sizeof(*submitter) + depth * sizeof(struct iovec));
- return ret;
+ mask = numa_allocate_cpumask();
+ numa_node_to_cpus(s->numa_node, mask);
+ numa_sched_setaffinity(s->tid, mask);
+#endif
}
-static void sig_int(int sig)
+static int detect_node(struct submitter *s, const char *name)
{
- int j;
+#ifdef CONFIG_LIBNUMA
+ const char *base = basename(name);
+ char str[128];
+ int ret, fd, node;
+
+ if (pt)
+ sprintf(str, "/sys/class/nvme-generic/%s/device/numa_node", base);
+ else
+ sprintf(str, "/sys/block/%s/device/numa_node", base);
+ fd = open(str, O_RDONLY);
+ if (fd < 0)
+ return -1;
- printf("Exiting on signal %d\n", sig);
- for (j = 0; j < nthreads; j++) {
- struct submitter *s = get_submitter(j);
- s->finish = 1;
+ ret = read(fd, str, sizeof(str));
+ if (ret < 0) {
+ close(fd);
+ return -1;
}
- finish = 1;
+ node = atoi(str);
+ s->numa_node = node;
+ close(fd);
+#else
+ s->numa_node = -1;
+#endif
+ return 0;
}
-static void arm_sig_int(void)
+static int setup_aio(struct submitter *s)
{
- struct sigaction act;
+#ifdef CONFIG_LIBAIO
+ if (polled) {
+ fprintf(stderr, "aio does not support polled IO\n");
+ polled = 0;
+ }
+ if (sq_thread_poll) {
+ fprintf(stderr, "aio does not support SQPOLL IO\n");
+ sq_thread_poll = 0;
+ }
+ if (do_nop) {
+ fprintf(stderr, "aio does not support polled IO\n");
+ do_nop = 0;
+ }
+ if (fixedbufs || register_files) {
+ fprintf(stderr, "aio does not support registered files or buffers\n");
+ fixedbufs = register_files = 0;
+ }
- memset(&act, 0, sizeof(act));
- act.sa_handler = sig_int;
- act.sa_flags = SA_RESTART;
- sigaction(SIGINT, &act, NULL);
+ return io_queue_init(roundup_pow2(depth), &s->aio_ctx);
+#else
+ fprintf(stderr, "Legacy AIO not available on this system/build\n");
+ errno = EINVAL;
+ return -1;
+#endif
}
static int setup_ring(struct submitter *s)
struct io_sq_ring *sring = &s->sq_ring;
struct io_cq_ring *cring = &s->cq_ring;
struct io_uring_params p;
- int ret, fd;
+ int ret, fd, i;
void *ptr;
+ size_t len;
memset(&p, 0, sizeof(p));
p.sq_thread_cpu = sq_thread_cpu;
}
}
+ if (pt) {
+ p.flags |= IORING_SETUP_SQE128;
+ p.flags |= IORING_SETUP_CQE32;
+ }
fd = io_uring_setup(depth, &p);
if (fd < 0) {
perror("io_uring_setup");
return 1;
}
- s->ring_fd = fd;
+ s->ring_fd = s->enter_ring_fd = fd;
io_uring_probe(fd);
if (fixedbufs) {
+ struct rlimit rlim;
+
+ rlim.rlim_cur = RLIM_INFINITY;
+ rlim.rlim_max = RLIM_INFINITY;
+ /* ignore potential error, not needed on newer kernels */
+ setrlimit(RLIMIT_MEMLOCK, &rlim);
+
ret = io_uring_register_buffers(s);
if (ret < 0) {
perror("io_uring_register_buffers");
return 1;
}
+
+ if (dma_map) {
+ ret = io_uring_map_buffers(s);
+ if (ret < 0) {
+ perror("io_uring_map_buffers");
+ return 1;
+ }
+ }
}
if (register_files) {
ptr = mmap(0, p.sq_off.array + p.sq_entries * sizeof(__u32),
PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd,
IORING_OFF_SQ_RING);
- printf("sq_ring ptr = 0x%p\n", ptr);
sring->head = ptr + p.sq_off.head;
sring->tail = ptr + p.sq_off.tail;
sring->ring_mask = ptr + p.sq_off.ring_mask;
sring->array = ptr + p.sq_off.array;
sq_ring_mask = *sring->ring_mask;
- s->sqes = mmap(0, p.sq_entries * sizeof(struct io_uring_sqe),
+ if (p.flags & IORING_SETUP_SQE128)
+ len = 2 * p.sq_entries * sizeof(struct io_uring_sqe);
+ else
+ len = p.sq_entries * sizeof(struct io_uring_sqe);
+ s->sqes = mmap(0, len,
PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd,
IORING_OFF_SQES);
- printf("sqes ptr = 0x%p\n", s->sqes);
- ptr = mmap(0, p.cq_off.cqes + p.cq_entries * sizeof(struct io_uring_cqe),
+ if (p.flags & IORING_SETUP_CQE32) {
+ len = p.cq_off.cqes +
+ 2 * p.cq_entries * sizeof(struct io_uring_cqe);
+ } else {
+ len = p.cq_off.cqes +
+ p.cq_entries * sizeof(struct io_uring_cqe);
+ }
+ ptr = mmap(0, len,
PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd,
IORING_OFF_CQ_RING);
- printf("cq_ring ptr = 0x%p\n", ptr);
cring->head = ptr + p.cq_off.head;
cring->tail = ptr + p.cq_off.tail;
cring->ring_mask = ptr + p.cq_off.ring_mask;
cring->ring_entries = ptr + p.cq_off.ring_entries;
cring->cqes = ptr + p.cq_off.cqes;
cq_ring_mask = *cring->ring_mask;
+
+ for (i = 0; i < p.sq_entries; i++)
+ sring->array[i] = i;
+
return 0;
}
-static void file_depths(char *buf)
+static void *allocate_mem(struct submitter *s, int size)
{
- bool prev = false;
- char *p;
- int i, j;
+ void *buf;
- buf[0] = '\0';
- p = buf;
- for (j = 0; j < nthreads; j++) {
- struct submitter *s = get_submitter(j);
+#ifdef CONFIG_LIBNUMA
+ if (s->numa_node != -1)
+ return numa_alloc_onnode(size, s->numa_node);
+#endif
+
+ if (posix_memalign(&buf, t_io_uring_page_size, bs)) {
+ printf("failed alloc\n");
+ return NULL;
+ }
+
+ return buf;
+}
+
+static int submitter_init(struct submitter *s)
+{
+ int i, nr_batch, err;
+ static int init_printed;
+ char buf[80];
+ s->tid = gettid();
+ printf("submitter=%d, tid=%d, file=%s, node=%d\n", s->index, s->tid,
+ s->filename, s->numa_node);
+
+ set_affinity(s);
+
+ __init_rand64(&s->rand_state, s->tid);
+ srand48(s->tid);
+
+ for (i = 0; i < MAX_FDS; i++)
+ s->files[i].fileno = i;
+
+ for (i = 0; i < roundup_pow2(depth); i++) {
+ void *buf;
+
+ buf = allocate_mem(s, bs);
+ if (!buf)
+ return 1;
+ s->iovecs[i].iov_base = buf;
+ s->iovecs[i].iov_len = bs;
+ }
+
+ if (use_sync) {
+ sprintf(buf, "Engine=preadv2\n");
+ err = 0;
+ } else if (!aio) {
+ err = setup_ring(s);
+ sprintf(buf, "Engine=io_uring, sq_ring=%d, cq_ring=%d\n", *s->sq_ring.ring_entries, *s->cq_ring.ring_entries);
+ } else {
+ sprintf(buf, "Engine=aio\n");
+ err = setup_aio(s);
+ }
+ if (err) {
+ printf("queue setup failed: %s, %d\n", strerror(errno), err);
+ return 1;
+ }
+
+ if (!init_printed) {
+ printf("polled=%d, fixedbufs=%d/%d, register_files=%d, buffered=%d, QD=%d\n", polled, fixedbufs, dma_map, register_files, buffered, depth);
+ printf("%s", buf);
+ init_printed = 1;
+ }
+
+ if (stats) {
+ nr_batch = roundup_pow2(depth / batch_submit);
+ if (nr_batch < 2)
+ nr_batch = 2;
+ s->clock_batch = calloc(nr_batch, sizeof(unsigned long));
+ s->clock_index = 1;
+
+ s->plat = calloc(PLAT_NR, sizeof(unsigned long));
+ } else {
+ s->clock_batch = NULL;
+ s->plat = NULL;
+ nr_batch = 0;
+ }
+ /* perform the expensive command initialization part for passthrough here
+ * rather than in the fast path
+ */
+ if (pt) {
+ for (i = 0; i < roundup_pow2(depth); i++) {
+ struct io_uring_sqe *sqe = &s->sqes[i << 1];
+
+ memset(&sqe->cmd, 0, sizeof(struct nvme_uring_cmd));
+ }
+ }
+ return nr_batch;
+}
+
+#ifdef CONFIG_LIBAIO
+static int prep_more_ios_aio(struct submitter *s, int max_ios, struct iocb *iocbs)
+{
+ uint64_t data;
+ struct file *f;
+ unsigned index;
+
+ index = 0;
+ while (index < max_ios) {
+ struct iocb *iocb = &iocbs[index];
+
+ if (s->nr_files == 1) {
+ f = &s->files[0];
+ } else {
+ f = &s->files[s->cur_file];
+ if (f->pending_ios >= file_depth(s)) {
+ s->cur_file++;
+ if (s->cur_file == s->nr_files)
+ s->cur_file = 0;
+ f = &s->files[s->cur_file];
+ }
+ }
+ f->pending_ios++;
+
+ io_prep_pread(iocb, f->real_fd, s->iovecs[index].iov_base,
+ s->iovecs[index].iov_len, get_offset(s, f));
+
+ data = f->fileno;
+ if (stats && stats_running)
+ data |= (((uint64_t) s->clock_index) << 32);
+ iocb->data = (void *) (uintptr_t) data;
+ index++;
+ }
+ return index;
+}
+
+static int reap_events_aio(struct submitter *s, struct io_event *events, int evs)
+{
+ int last_idx = -1, stat_nr = 0;
+ int reaped = 0;
+
+ while (evs) {
+ uint64_t data = (uintptr_t) events[reaped].data;
+ struct file *f = &s->files[data & 0xffffffff];
+
+ f->pending_ios--;
+ if (events[reaped].res != bs) {
+ printf("io: unexpected ret=%ld\n", events[reaped].res);
+ return -1;
+ }
+ if (stats) {
+ int clock_index = data >> 32;
+
+ if (last_idx != clock_index) {
+ if (last_idx != -1) {
+ add_stat(s, last_idx, stat_nr);
+ stat_nr = 0;
+ }
+ last_idx = clock_index;
+ }
+ stat_nr++;
+ }
+ reaped++;
+ evs--;
+ }
+
+ if (stat_nr)
+ add_stat(s, last_idx, stat_nr);
- for (i = 0; i < s->nr_files; i++) {
- struct file *f = &s->files[i];
+ s->inflight -= reaped;
+ s->done += reaped;
+ return reaped;
+}
+
+static void *submitter_aio_fn(void *data)
+{
+ struct submitter *s = data;
+ int i, ret, prepped;
+ struct iocb **iocbsptr;
+ struct iocb *iocbs;
+ struct io_event *events;
+#ifdef ARCH_HAVE_CPU_CLOCK
+ int nr_batch = submitter_init(s);
+#else
+ submitter_init(s);
+#endif
+
+ iocbsptr = calloc(depth, sizeof(struct iocb *));
+ iocbs = calloc(depth, sizeof(struct iocb));
+ events = calloc(depth, sizeof(struct io_event));
+
+ for (i = 0; i < depth; i++)
+ iocbsptr[i] = &iocbs[i];
+
+ prepped = 0;
+ do {
+ int to_wait, to_submit, to_prep;
+
+ if (!prepped && s->inflight < depth) {
+ to_prep = min(depth - s->inflight, batch_submit);
+ prepped = prep_more_ios_aio(s, to_prep, iocbs);
+#ifdef ARCH_HAVE_CPU_CLOCK
+ if (prepped && stats) {
+ s->clock_batch[s->clock_index] = get_cpu_clock();
+ s->clock_index = (s->clock_index + 1) & (nr_batch - 1);
+ }
+#endif
+ }
+ s->inflight += prepped;
+ to_submit = prepped;
+
+ if (to_submit && (s->inflight + to_submit <= depth))
+ to_wait = 0;
+ else
+ to_wait = min(s->inflight + to_submit, batch_complete);
+
+ ret = io_submit(s->aio_ctx, to_submit, iocbsptr);
+ s->calls++;
+ if (ret < 0) {
+ perror("io_submit");
+ break;
+ } else if (ret != to_submit) {
+ printf("submitted %d, wanted %d\n", ret, to_submit);
+ break;
+ }
+ prepped = 0;
+
+ while (to_wait) {
+ int r;
+
+ s->calls++;
+ r = io_getevents(s->aio_ctx, to_wait, to_wait, events, NULL);
+ if (r < 0) {
+ perror("io_getevents");
+ break;
+ } else if (r != to_wait) {
+ printf("r=%d, wait=%d\n", r, to_wait);
+ break;
+ }
+ r = reap_events_aio(s, events, r);
+ s->reaps += r;
+ to_wait -= r;
+ }
+ } while (!s->finish);
+
+ free(iocbsptr);
+ free(iocbs);
+ free(events);
+ finish = 1;
+ return NULL;
+}
+#endif
+
+static void io_uring_unregister_ring(struct submitter *s)
+{
+ struct io_uring_rsrc_update up = {
+ .offset = s->enter_ring_fd,
+ };
+
+ syscall(__NR_io_uring_register, s->ring_fd, IORING_UNREGISTER_RING_FDS,
+ &up, 1);
+}
+
+static int io_uring_register_ring(struct submitter *s)
+{
+ struct io_uring_rsrc_update up = {
+ .data = s->ring_fd,
+ .offset = -1U,
+ };
+ int ret;
+
+ ret = syscall(__NR_io_uring_register, s->ring_fd,
+ IORING_REGISTER_RING_FDS, &up, 1);
+ if (ret == 1) {
+ s->enter_ring_fd = up.offset;
+ return 0;
+ }
+ register_ring = 0;
+ return -1;
+}
+
+static void *submitter_uring_fn(void *data)
+{
+ struct submitter *s = data;
+ struct io_sq_ring *ring = &s->sq_ring;
+ int ret, prepped;
+#ifdef ARCH_HAVE_CPU_CLOCK
+ int nr_batch = submitter_init(s);
+#else
+ submitter_init(s);
+#endif
+
+ if (register_ring)
+ io_uring_register_ring(s);
+
+ prepped = 0;
+ do {
+ int to_wait, to_submit, this_reap, to_prep;
+ unsigned ring_flags = 0;
+
+ if (!prepped && s->inflight < depth) {
+ to_prep = min(depth - s->inflight, batch_submit);
+ prepped = prep_more_ios_uring(s, to_prep);
+#ifdef ARCH_HAVE_CPU_CLOCK
+ if (prepped && stats) {
+ s->clock_batch[s->clock_index] = get_cpu_clock();
+ s->clock_index = (s->clock_index + 1) & (nr_batch - 1);
+ }
+#endif
+ }
+ s->inflight += prepped;
+submit_more:
+ to_submit = prepped;
+submit:
+ if (to_submit && (s->inflight + to_submit <= depth))
+ to_wait = 0;
+ else
+ to_wait = min(s->inflight + to_submit, batch_complete);
+
+ /*
+ * Only need to call io_uring_enter if we're not using SQ thread
+ * poll, or if IORING_SQ_NEED_WAKEUP is set.
+ */
+ if (sq_thread_poll)
+ ring_flags = atomic_load_acquire(ring->flags);
+ if (!sq_thread_poll || ring_flags & IORING_SQ_NEED_WAKEUP) {
+ unsigned flags = 0;
+
+ if (to_wait)
+ flags = IORING_ENTER_GETEVENTS;
+ if (ring_flags & IORING_SQ_NEED_WAKEUP)
+ flags |= IORING_ENTER_SQ_WAKEUP;
+ ret = io_uring_enter(s, to_submit, to_wait, flags);
+ s->calls++;
+ } else {
+ /* for SQPOLL, we submitted it all effectively */
+ ret = to_submit;
+ }
+
+ /*
+ * For non SQ thread poll, we already got the events we needed
+ * through the io_uring_enter() above. For SQ thread poll, we
+ * need to loop here until we find enough events.
+ */
+ this_reap = 0;
+ do {
+ int r;
- if (prev)
- p += sprintf(p, " %d", f->pending_ios);
+ if (pt)
+ r = reap_events_uring_pt(s);
else
- p += sprintf(p, "%d", f->pending_ios);
- prev = true;
+ r = reap_events_uring(s);
+ if (r == -1) {
+ s->finish = 1;
+ break;
+ } else if (r > 0)
+ this_reap += r;
+ } while (sq_thread_poll && this_reap < to_wait);
+ s->reaps += this_reap;
+
+ if (ret >= 0) {
+ if (!ret) {
+ to_submit = 0;
+ if (s->inflight)
+ goto submit;
+ continue;
+ } else if (ret < to_submit) {
+ int diff = to_submit - ret;
+
+ s->done += ret;
+ prepped -= diff;
+ goto submit_more;
+ }
+ s->done += ret;
+ prepped = 0;
+ continue;
+ } else if (ret < 0) {
+ if (errno == EAGAIN) {
+ if (s->finish)
+ break;
+ if (this_reap)
+ goto submit;
+ to_submit = 0;
+ goto submit;
+ }
+ printf("io_submit: %s\n", strerror(errno));
+ break;
}
+ } while (!s->finish);
+
+ if (register_ring)
+ io_uring_unregister_ring(s);
+
+ finish = 1;
+ return NULL;
+}
+
+#ifdef CONFIG_PWRITEV2
+static void *submitter_sync_fn(void *data)
+{
+ struct submitter *s = data;
+ int ret;
+
+ submitter_init(s);
+
+ do {
+ uint64_t offset;
+ struct file *f;
+
+ if (s->nr_files == 1) {
+ f = &s->files[0];
+ } else {
+ f = &s->files[s->cur_file];
+ if (f->pending_ios >= file_depth(s)) {
+ s->cur_file++;
+ if (s->cur_file == s->nr_files)
+ s->cur_file = 0;
+ f = &s->files[s->cur_file];
+ }
+ }
+ f->pending_ios++;
+
+#ifdef ARCH_HAVE_CPU_CLOCK
+ if (stats)
+ s->clock_batch[s->clock_index] = get_cpu_clock();
+#endif
+
+ s->inflight++;
+ s->calls++;
+
+ offset = get_offset(s, f);
+ if (polled)
+ ret = preadv2(f->real_fd, &s->iovecs[0], 1, offset, RWF_HIPRI);
+ else
+ ret = preadv2(f->real_fd, &s->iovecs[0], 1, offset, 0);
+
+ if (ret < 0) {
+ perror("preadv2");
+ break;
+ } else if (ret != bs) {
+ break;
+ }
+
+ s->done++;
+ s->inflight--;
+ f->pending_ios--;
+ if (stats)
+ add_stat(s, s->clock_index, 1);
+ } while (!s->finish);
+
+ finish = 1;
+ return NULL;
+}
+#else
+static void *submitter_sync_fn(void *data)
+{
+ finish = 1;
+ return NULL;
+}
+#endif
+
+static struct submitter *get_submitter(int offset)
+{
+ void *ret;
+
+ ret = submitter;
+ if (offset)
+ ret += offset * (sizeof(*submitter) + depth * sizeof(struct iovec));
+ return ret;
+}
+
+static void do_finish(const char *reason)
+{
+ int j;
+
+ printf("Exiting on %s\n", reason);
+ for (j = 0; j < nthreads; j++) {
+ struct submitter *s = get_submitter(j);
+ s->finish = 1;
+ }
+ if (max_iops > 1000000) {
+ double miops = (double) max_iops / 1000000.0;
+ printf("Maximum IOPS=%.2fM\n", miops);
+ } else if (max_iops > 100000) {
+ double kiops = (double) max_iops / 1000.0;
+ printf("Maximum IOPS=%.2fK\n", kiops);
+ } else {
+ printf("Maximum IOPS=%lu\n", max_iops);
}
+ finish = 1;
+}
+
+static void sig_int(int sig)
+{
+ do_finish("signal");
+}
+
+static void arm_sig_int(void)
+{
+ struct sigaction act;
+
+ memset(&act, 0, sizeof(act));
+ act.sa_handler = sig_int;
+ act.sa_flags = SA_RESTART;
+ sigaction(SIGINT, &act, NULL);
+
+ /* Windows uses SIGBREAK as a quit signal from other applications */
+#ifdef WIN32
+ sigaction(SIGBREAK, &act, NULL);
+#endif
}
-static void usage(char *argv)
+static void usage(char *argv, int status)
{
+ char runtime_str[16];
+ snprintf(runtime_str, sizeof(runtime_str), "%d", runtime);
printf("%s [options] -- [filenames]\n"
- " -d <int> : IO Depth, default %d\n"
- " -s <int> : Batch submit, default %d\n"
- " -c <int> : Batch complete, default %d\n"
- " -b <int> : Block size, default %d\n"
- " -p <bool> : Polled IO, default %d\n",
- argv, DEPTH, BATCH_SUBMIT, BATCH_COMPLETE, BS, polled);
- exit(0);
+ " -d <int> : IO Depth, default %d\n"
+ " -s <int> : Batch submit, default %d\n"
+ " -c <int> : Batch complete, default %d\n"
+ " -b <int> : Block size, default %d\n"
+ " -p <bool> : Polled IO, default %d\n"
+ " -B <bool> : Fixed buffers, default %d\n"
+ " -D <bool> : DMA map fixed buffers, default %d\n"
+ " -F <bool> : Register files, default %d\n"
+ " -n <int> : Number of threads, default %d\n"
+ " -O <bool> : Use O_DIRECT, default %d\n"
+ " -N <bool> : Perform just no-op requests, default %d\n"
+ " -t <bool> : Track IO latencies, default %d\n"
+ " -T <int> : TSC rate in HZ\n"
+ " -r <int> : Runtime in seconds, default %s\n"
+ " -R <bool> : Use random IO, default %d\n"
+ " -a <bool> : Use legacy aio, default %d\n"
+ " -S <bool> : Use sync IO (preadv2), default %d\n"
+ " -X <bool> : Use registered ring %d\n"
+ " -P <bool> : Automatically place on device home node %d\n"
+ " -u <bool> : Use nvme-passthrough I/O, default %d\n",
+ argv, DEPTH, BATCH_SUBMIT, BATCH_COMPLETE, BS, polled,
+ fixedbufs, dma_map, register_files, nthreads, !buffered, do_nop,
+ stats, runtime == 0 ? "unlimited" : runtime_str, random_io, aio,
+ use_sync, register_ring, numa_placement, pt);
+ exit(status);
+}
+
+static void read_tsc_rate(void)
+{
+ char buffer[32];
+ int fd, ret;
+
+ if (tsc_rate)
+ return;
+
+ fd = open(TSC_RATE_FILE, O_RDONLY);
+ if (fd < 0)
+ return;
+
+ ret = read(fd, buffer, sizeof(buffer));
+ if (ret < 0) {
+ close(fd);
+ return;
+ }
+
+ tsc_rate = strtoul(buffer, NULL, 10);
+ printf("Using TSC rate %luHz\n", tsc_rate);
+ close(fd);
+}
+
+static void write_tsc_rate(void)
+{
+ char buffer[32];
+ struct stat sb;
+ int fd, ret;
+
+ if (!stat(TSC_RATE_FILE, &sb))
+ return;
+
+ fd = open(TSC_RATE_FILE, O_WRONLY | O_CREAT, 0644);
+ if (fd < 0)
+ return;
+
+ memset(buffer, 0, sizeof(buffer));
+ sprintf(buffer, "%lu", tsc_rate);
+ ret = write(fd, buffer, strlen(buffer));
+ if (ret < 0)
+ perror("write");
+ close(fd);
}
int main(int argc, char *argv[])
{
struct submitter *s;
unsigned long done, calls, reap;
- int err, i, j, flags, fd, opt;
- char *fdepths;
+ int i, j, flags, fd, opt, threads_per_f, threads_rem = 0, nfiles;
+ struct file f;
void *ret;
- if (!do_nop && argc < 2) {
- printf("%s: filename [options]\n", argv[0]);
- return 1;
- }
+ if (!do_nop && argc < 2)
+ usage(argv[0], 1);
- while ((opt = getopt(argc, argv, "d:s:c:b:p:B:F:n:h?")) != -1) {
+ while ((opt = getopt(argc, argv, "d:s:c:b:p:B:F:n:N:O:t:T:a:r:D:R:X:S:P:u:h?")) != -1) {
switch (opt) {
+ case 'a':
+ aio = !!atoi(optarg);
+ break;
case 'd':
depth = atoi(optarg);
break;
case 's':
batch_submit = atoi(optarg);
+ if (!batch_submit)
+ batch_submit = 1;
break;
case 'c':
batch_complete = atoi(optarg);
+ if (!batch_complete)
+ batch_complete = 1;
break;
case 'b':
bs = atoi(optarg);
break;
case 'n':
nthreads = atoi(optarg);
+ if (!nthreads) {
+ printf("Threads must be non-zero\n");
+ usage(argv[0], 1);
+ }
+ break;
+ case 'N':
+ do_nop = !!atoi(optarg);
+ break;
+ case 'O':
+ buffered = !atoi(optarg);
+ break;
+ case 't':
+#ifndef ARCH_HAVE_CPU_CLOCK
+ fprintf(stderr, "Stats not supported on this CPU\n");
+ return 1;
+#endif
+ stats = !!atoi(optarg);
+ break;
+ case 'T':
+#ifndef ARCH_HAVE_CPU_CLOCK
+ fprintf(stderr, "Stats not supported on this CPU\n");
+ return 1;
+#endif
+ tsc_rate = strtoul(optarg, NULL, 10);
+ write_tsc_rate();
+ break;
+ case 'r':
+ runtime = atoi(optarg);
+ break;
+ case 'D':
+ dma_map = !!atoi(optarg);
+ break;
+ case 'R':
+ random_io = !!atoi(optarg);
+ break;
+ case 'X':
+ register_ring = !!atoi(optarg);
+ break;
+ case 'S':
+#ifdef CONFIG_PWRITEV2
+ use_sync = !!atoi(optarg);
+#else
+ fprintf(stderr, "preadv2 not supported\n");
+ exit(1);
+#endif
+ break;
+ case 'P':
+ numa_placement = !!atoi(optarg);
+ break;
+ case 'u':
+ pt = !!atoi(optarg);
break;
case 'h':
case '?':
default:
- usage(argv[0]);
+ usage(argv[0], 0);
break;
}
}
+ if (stats)
+ read_tsc_rate();
+
+ if (batch_complete > depth)
+ batch_complete = depth;
+ if (batch_submit > depth)
+ batch_submit = depth;
+ if (!fixedbufs && dma_map)
+ dma_map = 0;
+
submitter = calloc(nthreads, sizeof(*submitter) +
- depth * sizeof(struct iovec));
+ roundup_pow2(depth) * sizeof(struct iovec));
for (j = 0; j < nthreads; j++) {
s = get_submitter(j);
+ s->numa_node = -1;
s->index = j;
s->done = s->calls = s->reaps = 0;
}
j = 0;
i = optind;
- printf("i %d, argc %d\n", i, argc);
+ nfiles = argc - i;
+ if (!do_nop) {
+ if (!nfiles) {
+ printf("No files specified\n");
+ usage(argv[0], 1);
+ }
+ threads_per_f = nthreads / nfiles;
+ /* make sure each thread gets assigned files */
+ if (threads_per_f == 0) {
+ threads_per_f = 1;
+ } else {
+ threads_rem = nthreads - threads_per_f * nfiles;
+ }
+ }
while (!do_nop && i < argc) {
- struct file *f;
+ int k, limit;
+
+ memset(&f, 0, sizeof(f));
- s = get_submitter(j);
- if (s->nr_files == MAX_FDS) {
- printf("Max number of files (%d) reached\n", MAX_FDS);
- break;
- }
fd = open(argv[i], flags);
if (fd < 0) {
perror("open");
return 1;
}
-
- f = &s->files[s->nr_files];
- f->real_fd = fd;
- if (get_file_size(f)) {
+ f.real_fd = fd;
+ if (get_file_size(&f)) {
printf("failed getting size of device/file\n");
return 1;
}
- if (f->max_blocks <= 1) {
+ if (f.max_blocks <= 1) {
printf("Zero file/device size?\n");
return 1;
}
- f->max_blocks--;
-
- printf("Added file %s (submitter %d)\n", argv[i], s->index);
- s->nr_files++;
- i++;
- if (++j >= nthreads)
- j = 0;
- }
+ f.max_blocks--;
- if (fixedbufs) {
- struct rlimit rlim;
+ limit = threads_per_f;
+ limit += threads_rem > 0 ? 1 : 0;
+ for (k = 0; k < limit; k++) {
+ s = get_submitter((j + k) % nthreads);
- rlim.rlim_cur = RLIM_INFINITY;
- rlim.rlim_max = RLIM_INFINITY;
- if (setrlimit(RLIMIT_MEMLOCK, &rlim) < 0) {
- perror("setrlimit");
- return 1;
- }
- }
+ if (s->nr_files == MAX_FDS) {
+ printf("Max number of files (%d) reached\n", MAX_FDS);
+ break;
+ }
- arm_sig_int();
+ memcpy(&s->files[s->nr_files], &f, sizeof(f));
- for (j = 0; j < nthreads; j++) {
- s = get_submitter(j);
- for (i = 0; i < depth; i++) {
- void *buf;
+ if (numa_placement)
+ detect_node(s, argv[i]);
- if (posix_memalign(&buf, bs, bs)) {
- printf("failed alloc\n");
- return 1;
- }
- s->iovecs[i].iov_base = buf;
- s->iovecs[i].iov_len = bs;
+ s->filename = argv[i];
+ s->nr_files++;
}
+ threads_rem--;
+ i++;
+ j += limit;
}
- for (j = 0; j < nthreads; j++) {
- s = get_submitter(j);
+ arm_sig_int();
- err = setup_ring(s);
- if (err) {
- printf("ring setup failed: %s, %d\n", strerror(errno), err);
- return 1;
- }
- }
- s = get_submitter(0);
- printf("polled=%d, fixedbufs=%d, register_files=%d, buffered=%d", polled, fixedbufs, register_files, buffered);
- printf(" QD=%d, sq_ring=%d, cq_ring=%d\n", depth, *s->sq_ring.ring_entries, *s->cq_ring.ring_entries);
+ t_io_uring_page_size = sysconf(_SC_PAGESIZE);
+ if (t_io_uring_page_size < 0)
+ t_io_uring_page_size = 4096;
for (j = 0; j < nthreads; j++) {
s = get_submitter(j);
- pthread_create(&s->thread, NULL, submitter_fn, s);
+ if (use_sync)
+ pthread_create(&s->thread, NULL, submitter_sync_fn, s);
+ else if (!aio)
+ pthread_create(&s->thread, NULL, submitter_uring_fn, s);
+#ifdef CONFIG_LIBAIO
+ else
+ pthread_create(&s->thread, NULL, submitter_aio_fn, s);
+#endif
}
- fdepths = malloc(8 * s->nr_files * nthreads);
reap = calls = done = 0;
do {
unsigned long this_done = 0;
unsigned long this_reap = 0;
unsigned long this_call = 0;
unsigned long rpc = 0, ipc = 0;
+ unsigned long iops, bw;
sleep(1);
+ if (runtime && !--runtime)
+ do_finish("timeout");
+
+ /* don't print partial run, if interrupted by signal */
+ if (finish)
+ break;
+
+ /* one second in to the run, enable stats */
+ if (stats)
+ stats_running = 1;
+
for (j = 0; j < nthreads; j++) {
+ s = get_submitter(j);
this_done += s->done;
this_call += s->calls;
this_reap += s->reaps;
ipc = (this_reap - reap) / (this_call - calls);
} else
rpc = ipc = -1;
- file_depths(fdepths);
- printf("IOPS=%lu, IOS/call=%ld/%ld, inflight=(%s)\n",
- this_done - done, rpc, ipc, fdepths);
+ iops = this_done - done;
+ if (bs > 1048576)
+ bw = iops * (bs / 1048576);
+ else
+ bw = iops / (1048576 / bs);
+ if (iops > 1000000) {
+ double miops = (double) iops / 1000000.0;
+ printf("IOPS=%.2fM, ", miops);
+ } else if (iops > 100000) {
+ double kiops = (double) iops / 1000.0;
+ printf("IOPS=%.2fK, ", kiops);
+ } else {
+ printf("IOPS=%lu, ", iops);
+ }
+ max_iops = max(max_iops, iops);
+ if (!do_nop) {
+ if (bw > 2000) {
+ double bw_g = (double) bw / 1000.0;
+
+ printf("BW=%.2fGiB/s, ", bw_g);
+ } else {
+ printf("BW=%luMiB/s, ", bw);
+ }
+ }
+ printf("IOS/call=%ld/%ld\n", rpc, ipc);
done = this_done;
calls = this_call;
reap = this_reap;
s = get_submitter(j);
pthread_join(s->thread, &ret);
close(s->ring_fd);
+
+ if (stats) {
+ unsigned long nr;
+
+ printf("%d: Latency percentiles:\n", s->tid);
+ for (i = 0, nr = 0; i < PLAT_NR; i++)
+ nr += s->plat[i];
+ show_clat_percentiles(s->plat, nr, 4);
+ free(s->clock_batch);
+ free(s->plat);
+ }
}
- free(fdepths);
+
free(submitter);
return 0;
}
projects / fio.git / blobdiff