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Date: Mon, 27 Oct 2014 08:15:31 -0600
From: Jens Axboe <axboe@kernel.dk>
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Subject: Re: fio rbd completions (Was: fio rbd hang for block sizes > 1M)
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To: Ketor D <d.ketor@gmail.com>, Mark Kirkwood <mark.kirkwood@catalyst.net.nz>
Cc: Mark Nelson <mark.nelson@inktank.com>, Mark Nelson <mark.a.nelson@gmail.com>, fio@vger.kernel.org, "xan.peng" <xanpeng@gmail.com>, "ceph-devel@vger.kernel.org" <ceph-devel@vger.kernel.org>
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On 10/27/2014 03:27 AM, Ketor D wrote:
> Hi, Jens:
>           I have test your v2 and v3 patch.
>           The v2 patch get SIGABT and crash. The v3 patch hang.
> 
>          Why not simply comment usleep?

Because that is very inefficient as well, then fio would basically be
busy looping waiting for IO to finish.

-- 
Jens Axboe