Re: [Hdaps-devel] Re: Updating hard disk firmware & parking hard disk

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



>> Head parking while the system running is almost useless, since sooner or 
>> later, someone's going to write/read something.
>
>Correct, that's why we're discussing to freeze the request queue as well.

Sounds good (esp. for laptops/notebooks, which should preferably run "on RAM" 
as long as possible)

>But it suffers from the same fate - as soon as the disk receives a new
>request, it will spin up again.

In case of the SUSE bootscripts (and possibly others), some flush barriers are 
engaged, then the disk is spun down and immediately after the poweroff 
happens.

>So there is no gain, except that just
>parking the head without spinning down the spindle can be performed much
>faster.

What's the gain in parking the head manually if it's done anyway when the disk 
spins down (for whatever reason)?



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

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]
  Powered by Linux