On Sep 29, 2005, at 11:40 AM, Bill Studenmund wrote:

> On Thu, Sep 29, 2005 at 07:32:51PM +0900, YAMAMOTO Takashi wrote:
>> ftp://ftp.netbsd.org/pub/NetBSD/misc/xtraeme/bufq_on_the_fly.diff
>>
>> - is there any point to change "sortmethod" on the fly?
>>   it's characteristics of the device.
>
> I thought the answer to your question would be that we have  
> different sort
> methods which are better for different workloads, so that changing  
> on the
> fly would make sense if the workload shifts (or if powerup code  
> needs to
> set up the right scheduler).

Queueing method, sure... but the "sort" (cylinder or raw block #) is  
really something the device needs to decide.

-- thorpej