> On Fri, 2024-05-03 at 14:34 +0300, Avri Altman wrote: > > UFS4.0, and specifically gear 5 changes this, and requires the device > > to be more attentive. This doesn't come free - the device has to > > allocate more resources to that end, but the sequential write > > performance improvement is significant. Early measurements shows 25% > > gain when moving from rtt 2 to 9. Therefore, set bMaxNumOfRTT to be > > min(bDeviceRTTCap, NORTT) as UFSHCI expects. > > > > Signed-off-by: Avri Altman <avri.altman@xxxxxxx> > > > Avri, > > I was still curious about this 25% gain, so I will take a look. It would be great if > you could share more information about this. Thanks. Those are just from early measurements. But it perfectly makes sense to me: The rtt upiu works like Toyota's kanban cards. And in gear 5 - there isn't enough cards... Thanks, Avri > > > > Reviewed-by: Bean Huo <beanhuo@xxxxxxxxxx> > >
