Re: [PATCH RFC - TAKE TWO - 08/12] block, bfq: preserve a low latency also with NCQ-capable drives

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

 



Il giorno 31/mag/2014, alle ore 15:48, Tejun Heo <tj@xxxxxxxxxx> ha scritto:

> On Thu, May 29, 2014 at 11:05:39AM +0200, Paolo Valente wrote:
>> This patch addresses this issue by not disabling device idling for
> 
> This patch addresses this issue by allowing device idling for...
> 
>> weight-raised queues, even if the device supports NCQ. This allows BFQ
>> to start serving a new queue, and therefore allows the drive to
> 
> This disallows BFQ to start serving a new queue, and therefore the
> drive to prefetch new requests, until the idling timeout expires.
> 
> Prefetch?  Can you elaborate?

By prefetching I meant just queuing more than one request (by the drive). I hope that this clarifies things a little bit.

Paolo

> 
> Thanks.
> 
> -- 
> tejun


--
Paolo Valente                                                 
Algogroup
Dipartimento di Fisica, Informatica e Matematica		
Via Campi, 213/B
41125 Modena - Italy        				  
homepage:  http://algogroup.unimore.it/people/paolo/

--
To unsubscribe from this list: send the line "unsubscribe cgroups" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]     [Monitors]

  Powered by Linux