Re: [PATCH 3/4] rdma ioengine improvement

[Jens Axboe <axboe@kernel.dk>]

On 2012-10-20 05:11, Yufei Ren wrote:
> From: Yufei Ren <renyufei83@gmail.com>

This one needs a bit of explaining. What is the point of using a
re-entrant variant of rand(), if you are using a shared static variable
anyway?

Would it be better to use the fio shipped rand, now we're in there
anyway?

> @@ -790,6 +792,13 @@ static int fio_rdmaio_connect(struct thread_data *td, struct fio_file *f)
>  	/* wait for remote MR info from server side */
>  	rdma_poll_wait(td, IBV_WC_RECV);
>  
> +	/* In SEND/RECV test, iodepth in RECV side is deeper
> +	 * in SEND side. RECV needs more time to construct the
> +	 * buffer blocks, so the server side may need to stop
> +	 * some time before transfer data.
> +	 */
> +	usleep(500000);
> +
>  	return 0;

Hmm?

-- 
Jens Axboe