Re: [PATCH 1/2] Added replay_rebase option to run multi-threaded log replay on different disk sectors.

[Jens Axboe <axboe@xxxxxxxxx>]

On 2011-09-09 07:12, Taisuke Yamada wrote:
> Hi.
> 
> I'm now trying to run multi-threaded log replay, and noticed
> all threads are accessing same sector on a disk. Of course,
> this is an expected behavior of "replay".
> 
> But since I also wanted to have each thread accessing different
> parts of the disk to increase a load, but still following the
> access pattern of the original, I added "replay_rebase" option to
> shift offset of IO request for each thread.
> 
> Althrough there's "1/2" in the subject, this patch is complete
> by itself. Next one (2/2) is related, but handles different issue.

Thanks, I can see this being handy. I can apply this, but I would much
prefer if you resend it with the proper updates to HOWTO and fio.1
adding the new option. Otherwise nobody is going to learn about it.

-- 
Jens Axboe

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