RE: scsi-mq V2

[Elliott, Robert (Server Storage)]

> -----Original Message-----
> From: Christoph Hellwig [mailto:hch@xxxxxxxxxxxxx]
> Sent: Thursday, 10 July, 2014 1:21 AM
> To: Elliott, Robert (Server Storage)
> Cc: Jens Axboe; dgilbert@xxxxxxxxxxxx; Christoph Hellwig; James Bottomley;
> Bart Van Assche; Benjamin LaHaise; linux-scsi@xxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx
> Subject: Re: scsi-mq V2
> 
> On Thu, Jul 10, 2014 at 12:53:36AM +0000, Elliott, Robert (Server Storage)
> wrote:
> > the problem still occurs - fio results in low or 0 IOPS, with perf top
> > reporting unusual amounts of time spent in do_io_submit and io_submit.
> 
> The diff between the two version doesn't show too much other possible
> interesting commits, the most interesting being some minor block
> updates.
> 
> I guess we'll have to a manual bisect, I've pushed out a

> scsi-mq.3-bisect-1 branch that is rebased to just before the merge of
> the block tree

good.

> and a scsi-mq.3-bisect-2 branch that is just after the merge of the 
> block tree to get started.

good.


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