Re: [RFC PATCH] blk-mq: fixup RESTART when queue becomes idle

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On Thu, 2018-01-18 at 17:18 -0500, Laurence Oberman wrote:
> OK, I ran 5 at once of 5 separate mount points.
> I am using 4k block sizes
> Its solid consistent for me. No stalls no gaps.

Hi Laurence,

That's great news and thank you for having shared this information but I think
it should be mentioned that you have been running my tree in which some recent
block and dm patches were reverted
(https://github.com/bvanassche/linux/tree/block-scsi-for-next)

> 
> [global]
> name=02-mq
> filename=fio-output-02-mq.txt
> rw=randwrite
> verify=md5
> ;rwmixread=60
> ;rwmixwrite=40
> bs=4K
> ;direct=1
> ;numjobs=4
> ;time_based=1
> runtime=120
> 
> [file1]
> size=3G
> ioengine=libaio
> iodepth=16
> 
> I watch I/O and I see it ramp up but fio still runs and it kind of
> shuts down.

In test "file1" I see an I/O size of 3G. Does that mean that the patch that
should fix the sgl_alloc() issue is working?

Thanks,

Bart.




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