lkml.org 
[lkml]   [2006]   [Jun]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [git patch] libata resume fix
Jens Axboe wrote:
>> Can you measure spin up time for your 15k's? Some controllers can't
>> catch the first D2H FIS after POR and have to wait unconditionally for
>> spin up for hotplug & resuming from suspend. Currently 8 sec wait is
>> used but it seems insufficient for your drives. Failing to spinup in
>> that 8 secs would probably result in timeout of the first reset attempt
>> and retrial - which currently takes > 30 secs.
>>
>> Spin-up time can be measured by first issuing STANDBY and then time how
>> long IDLE IMMEDIATE takes, I think.
>
> The 15K RPM is a SCSI drive, I haven't seen any SATA 15K rpm drives yet.
> I have the same model in another box, I can measure spinup with
> START_STOP unit there. I will do so later today, when I fire it up, if
> you still want to know?
>

Arggh.. Confused w/ 10k drives. But it would be nice to know spin-up
time for 15k's if it doesn't waste too much of your time.

Thanks.

--
tejun
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-06-06 09:12    [from the cache]
©2003-2011 Jasper Spaans