Re: blk-mq: preparation of the ground for BFQ inclusion

2016-12-01 Thread Jens Axboe
On 12/01/2016 02:03 PM, Jens Axboe wrote:
> On 11/14/2016 03:42 PM, Jens Axboe wrote:
>> On 11/14/2016 03:13 PM, Paolo Valente wrote:
>>> Hi Jens,
>>> have you had time to look into the first extensions/changes required?
>>> Any time plan?
>>
>> I was busy last week on the writeback and on the polling. I should have
>> something end this week.
> 
> It's coming together, running some testing and fixing some issues. But I
> now have unmodified legacy IO schedulers running under blk-mq, for
> single queue devices. Scheduler queue depth is independent of the device
> queue depth.

Here is the branch, btw:

http://git.kernel.dk/cgit/linux-block/log/?h=for-4.11/blk-mq-legacy-sched

if you want to look at it or test it. It's not in a clean state, I
wanted to get this reasonably working before cleaning it up. Should be
ready for testing, I've successfully run various IO tests on deadline
and CFQ with null_blk loaded with queue_mode=2 submit_queues=1
use_sched=1.

-- 
Jens Axboe

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Re: blk-mq: preparation of the ground for BFQ inclusion

2016-12-01 Thread Jens Axboe
On 11/14/2016 03:42 PM, Jens Axboe wrote:
> On 11/14/2016 03:13 PM, Paolo Valente wrote:
>> Hi Jens,
>> have you had time to look into the first extensions/changes required?
>> Any time plan?
> 
> I was busy last week on the writeback and on the polling. I should have
> something end this week.

It's coming together, running some testing and fixing some issues. But I
now have unmodified legacy IO schedulers running under blk-mq, for
single queue devices. Scheduler queue depth is independent of the device
queue depth.

-- 
Jens Axboe

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Re: blk-mq: preparation of the ground for BFQ inclusion

2016-11-14 Thread Jens Axboe

On 11/14/2016 03:13 PM, Paolo Valente wrote:

Hi Jens,
have you had time to look into the first extensions/changes required?
Any time plan?


I was busy last week on the writeback and on the polling. I should have
something end this week.

--
Jens Axboe

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