--- James Bottomley <[email protected]> wrote:
> On Wed, 2006-08-30 at 12:04 -0700, Luben Tuikov wrote:
> > > --- a/drivers/scsi/aic94xx/aic94xx_init.c
> > > +++ b/drivers/scsi/aic94xx/aic94xx_init.c
> > > @@ -71,7 +72,7 @@ static struct scsi_host_template aic94xx
> > > .change_queue_type = sas_change_queue_type,
> > > .bios_param = sas_bios_param,
> > > .can_queue = 1,
> > > - .cmd_per_lun = 1,
> > > + .cmd_per_lun = 2,
> >
> > Why 2? Why not 3? If you can set this to 3, then why not 4?
> > But if you can set it to 4, why not 5?
> >
> > This value should also be dynamically set, it should depend on
> > the type of LU and it shouldn't be present in the host template.
> > (But that's an architectural argument which leads nowhere on lsml.)
>
> actually, cmd_per_lun is pretty much a vestigial variable. It's used
> for the initial queue depth before the driver decides to turn on TCQ.
> Thus, since the non-tagged depth should always only be 1, the only
> useful value to set it to is 1.
Who cares?
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