asi; Omar
Sandoval;
> Martin K . Petersen; James Bottomley; Christoph Hellwig; Don Brace;
Peter
> Rivera; Paolo Bonzini; Laurence Oberman
> Subject: Re: [PATCH 0/5] blk-mq/scsi-mq: support global tags & introduce
> force_blk_mq
>
> Hi Kashyap,
>
> On Tue, Feb 13,
ock@vger.kernel.org; Christoph
> > Hellwig; Mike Snitzer; linux-s...@vger.kernel.org; Arun Easi; Omar
> Sandoval;
> > Martin K . Petersen; James Bottomley; Christoph Hellwig; Don Brace;
> Peter
> > Rivera; Paolo Bonzini; Laurence Oberman
> > Subject: Re: [PATCH 0/5] blk-
asi; Omar
Sandoval;
> Martin K . Petersen; James Bottomley; Christoph Hellwig; Don Brace;
Peter
> Rivera; Paolo Bonzini; Laurence Oberman
> Subject: Re: [PATCH 0/5] blk-mq/scsi-mq: support global tags & introduce
> force_blk_mq
>
> On Sat, Feb 10, 2018 at 09:00:57AM +0800, Ming Lei wr
ph Hellwig; Don Brace;
> > Peter
> > > Rivera; Paolo Bonzini; Laurence Oberman
> > > Subject: Re: [PATCH 0/5] blk-mq/scsi-mq: support global tags & introduce
> > > force_blk_mq
> > >
> > > On Fri, Feb 09, 2018 at 10:28:23AM +0530, Kashyap Desai wrote:
>
ock@vger.kernel.org; Christoph
> > Hellwig; Mike Snitzer; linux-s...@vger.kernel.org; Arun Easi; Omar
> Sandoval;
> > Martin K . Petersen; James Bottomley; Christoph Hellwig; Don Brace;
> Peter
> > Rivera; Paolo Bonzini; Laurence Oberman
> > Subject: Re: [PATCH 0/5] blk-
Sandoval;
> Martin K . Petersen; James Bottomley; Christoph Hellwig; Don Brace;
Peter
> Rivera; Paolo Bonzini; Laurence Oberman
> Subject: Re: [PATCH 0/5] blk-mq/scsi-mq: support global tags & introduce
> force_blk_mq
>
> On Fri, Feb 09, 2018 at 10:28:23AM +0530, Kashyap
nel.org; Christoph
> > Hellwig; Mike Snitzer; linux-s...@vger.kernel.org; Arun Easi; Omar
> Sandoval;
> > Martin K . Petersen; James Bottomley; Christoph Hellwig; Don Brace;
> Peter
> > Rivera; Paolo Bonzini; Laurence Oberman
> > Subject: Re: [PATCH 0/5] blk-mq/scsi-mq:
asi; Omar
Sandoval;
> Martin K . Petersen; James Bottomley; Christoph Hellwig; Don Brace;
Peter
> Rivera; Paolo Bonzini; Laurence Oberman
> Subject: Re: [PATCH 0/5] blk-mq/scsi-mq: support global tags & introduce
> force_blk_mq
>
> On Thu, Feb 08, 2018 at 08:00:29AM +0100, Hannes Re
s Reinecke
> >> Cc: Kashyap Desai; Jens Axboe; linux-block@vger.kernel.org; Christoph
> >> Hellwig; Mike Snitzer; linux-s...@vger.kernel.org; Arun Easi; Omar
> > Sandoval;
> >> Martin K . Petersen; James Bottomley; Christoph Hellwig; Don Brace;
> > Peter
> >&g
;> Hellwig; Mike Snitzer; linux-s...@vger.kernel.org; Arun Easi; Omar
> Sandoval;
>> Martin K . Petersen; James Bottomley; Christoph Hellwig; Don Brace;
> Peter
>> Rivera; Paolo Bonzini; Laurence Oberman
>> Subject: Re: [PATCH 0/5] blk-mq/scsi-mq: support global tags &am
ock@vger.kernel.org; Christoph
> > Hellwig; Mike Snitzer; linux-s...@vger.kernel.org; Arun Easi; Omar
> Sandoval;
> > Martin K . Petersen; James Bottomley; Christoph Hellwig; Don Brace;
> Peter
> > Rivera; Paolo Bonzini; Laurence Oberman
> > Subject: Re:
asi; Omar
Sandoval;
> Martin K . Petersen; James Bottomley; Christoph Hellwig; Don Brace;
Peter
> Rivera; Paolo Bonzini; Laurence Oberman
> Subject: Re: [PATCH 0/5] blk-mq/scsi-mq: support global tags & introduce
> force_blk_mq
>
> On Wed, Feb 07, 2018 at 07:50:21AM
On Wed, Feb 07, 2018 at 07:50:21AM +0100, Hannes Reinecke wrote:
> Hi all,
>
> [ .. ]
> >>
> >> Could you share us your patch for enabling global_tags/MQ on
> > megaraid_sas
> >> so that I can reproduce your test?
> >>
> >>> See below perf top data. "bt_iter" is consuming 4 times more CPU.
> >>
>
Hi all,
[ .. ]
>>
>> Could you share us your patch for enabling global_tags/MQ on
> megaraid_sas
>> so that I can reproduce your test?
>>
>>> See below perf top data. "bt_iter" is consuming 4 times more CPU.
>>
>> Could you share us what the IOPS/CPU utilization effect is after
> applying the
>> p
ock@vger.kernel.org; Christoph
> > Hellwig; Mike Snitzer; linux-s...@vger.kernel.org; Arun Easi; Omar
> Sandoval;
> > Martin K . Petersen; James Bottomley; Christoph Hellwig; Don Brace;
> Peter
> > Rivera; Paolo Bonzini; Laurence Oberman
> > Subject: Re: [PATCH 0/5] blk-
Sandoval;
> Martin K . Petersen; James Bottomley; Christoph Hellwig; Don Brace;
Peter
> Rivera; Paolo Bonzini; Laurence Oberman
> Subject: Re: [PATCH 0/5] blk-mq/scsi-mq: support global tags & introduce
> force_blk_mq
>
> Hi Kashyap,
>
> On Tue, Feb 06,
ock@vger.kernel.org; Christoph
> > Hellwig; Mike Snitzer; linux-s...@vger.kernel.org; Arun Easi; Omar
> Sandoval;
> > Martin K . Petersen; James Bottomley; Christoph Hellwig; Don Brace;
> Peter
> > Rivera; Paolo Bonzini; Laurence Oberman
> > Subject: Re: [PATCH 0/5] blk-
Sandoval;
> Martin K . Petersen; James Bottomley; Christoph Hellwig; Don Brace;
Peter
> Rivera; Paolo Bonzini; Laurence Oberman
> Subject: Re: [PATCH 0/5] blk-mq/scsi-mq: support global tags & introduce
> force_blk_mq
>
> Hi Kashyap,
>
> On Tue, Feb 06, 2018 at 11:33:50A
Hi Kashyap,
On Tue, Feb 06, 2018 at 11:33:50AM +0530, Kashyap Desai wrote:
> > > We still have more than one reply queue ending up completion one CPU.
> >
> > pci_alloc_irq_vectors(PCI_IRQ_AFFINITY) has to be used, that means
> > smp_affinity_enable has to be set as 1, but seems it is the default
> > We still have more than one reply queue ending up completion one CPU.
>
> pci_alloc_irq_vectors(PCI_IRQ_AFFINITY) has to be used, that means
> smp_affinity_enable has to be set as 1, but seems it is the default
setting.
>
> Please see kernel/irq/affinity.c, especially irq_calc_affinity_vectors(
On Mon, Feb 05, 2018 at 07:58:29AM +0100, Hannes Reinecke wrote:
> On 02/03/2018 05:21 AM, Ming Lei wrote:
> > Hi All,
> >
> > This patchset supports global tags which was started by Hannes originally:
> >
> > https://marc.info/?l=linux-block&m=149132580511346&w=2
> >
> > Also inroduce 'forc
ellwig;
> > Mike Snitzer
> > Cc: linux-s...@vger.kernel.org; Arun Easi; Omar Sandoval; Martin K .
> > Petersen;
> > James Bottomley; Christoph Hellwig; Don Brace; Kashyap Desai; Peter
> > Rivera;
> > Paolo Bonzini; Laurence Oberman
> > Subject: Re: [PATCH 0/5
gt; Petersen;
> James Bottomley; Christoph Hellwig; Don Brace; Kashyap Desai; Peter
> Rivera;
> Paolo Bonzini; Laurence Oberman
> Subject: Re: [PATCH 0/5] blk-mq/scsi-mq: support global tags & introduce
> force_blk_mq
>
> On 02/03/2018 05:21 AM, Ming Lei wrote:
> >
On 02/03/2018 05:21 AM, Ming Lei wrote:
> Hi All,
>
> This patchset supports global tags which was started by Hannes originally:
>
> https://marc.info/?l=linux-block&m=149132580511346&w=2
>
> Also inroduce 'force_blk_mq' to 'struct scsi_host_template', so that
> driver can avoid to support
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