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SubjectRe: [RFC] scsi: switch to scsi-mq by default
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On 07/03/2018 08:54 AM, Johannes Thumshirn wrote:
> It has been more than one year since we tried to change the default
> from legacy to multi queue in SCSI. Back then we had to retract the
> change because of performance issues with rotating disks.
>
> In the meantime there have been a substantial amount of performance
> improvements, thus we can re-enable scsi-mq without a significant
> performance penalty.
>
> Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
> ---
> drivers/scsi/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
> index 35c909bbf8ba..bd115bab162e 100644
> --- a/drivers/scsi/Kconfig
> +++ b/drivers/scsi/Kconfig
> @@ -49,6 +49,7 @@ config SCSI_NETLINK
>
> config SCSI_MQ_DEFAULT
> bool "SCSI: use blk-mq I/O path by default"
> + default y
> depends on SCSI
> ---help---
> This option enables the new blk-mq based I/O path for SCSI
>

Yeah, let's try it.

Reviewed-by: Hannes Reinecke <hare@suse.com>

Cheers,

Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@suse.de +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)

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