Commit 4f9f191c authored by Daniel Verkamp's avatar Daniel Verkamp Committed by Ben Walker
Browse files

nvme/perf: align buffers to block size for libaio 



This is required by libaio.  Previously, buffers were aligned to 512
bytes, but 4K devices need 4K-aligned buffers.

Change-Id: I96080e72dc77e0e72f426f7c9fe98b6724f66e1b
Signed-off-by: default avatarDaniel Verkamp <daniel.verkamp@intel.com>
parent 8e97d585

examples/nvme/perf/perf.c

+10 −1
Original line number Diff line number Diff line
@@ -141,6 +141,7 @@ 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 int g_rw_percentage;

static int g_is_random;
@@ -336,6 +337,14 @@ register_aio_file(const char *path) 
		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);
@@ -401,7 +410,7 @@ aio_check_io(struct ns_worker_ctx *ns_ctx) 
static void task_ctor(struct rte_mempool *mp, void *arg, void *__task, unsigned id)

{

	struct perf_task *task = __task;

	task->buf = spdk_zmalloc(g_io_size_bytes, 0x200, NULL);

	task->buf = spdk_zmalloc(g_io_size_bytes, g_io_align, NULL);

	if (task->buf == NULL) {

		fprintf(stderr, "task->buf spdk_zmalloc failed\n");

		exit(1);