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libaio engine: print warning for depth > 1 and buffered IO
[fio.git]
/
engines
/
libaio.c
diff --git
a/engines/libaio.c
b/engines/libaio.c
index 871c5a4785d727a72471499ffca93344ff660b1c..f8990c1601ba801309d69e7ef84ceb7bfbfcd71c 100644
(file)
--- a/
engines/libaio.c
+++ b/
engines/libaio.c
@@
-189,8
+189,14
@@
static void fio_libaio_cleanup(struct thread_data *td)
static int fio_libaio_init(struct thread_data *td)
{
struct libaio_data *ld = malloc(sizeof(*ld));
static int fio_libaio_init(struct thread_data *td)
{
struct libaio_data *ld = malloc(sizeof(*ld));
+ static int warn_print;
int err;
int err;
+ if (td->o.iodepth > 1 && !td->o.odirect && !warn_print) {
+ log_info("fio: libaio engine is only async for non-buffered IO\n");
+ warn_print = 1;
+ }
+
memset(ld, 0, sizeof(*ld));
err = io_queue_init(td->o.iodepth, &ld->aio_ctx);
memset(ld, 0, sizeof(*ld));
err = io_queue_init(td->o.iodepth, &ld->aio_ctx);