Re: 2.5.69, IDE TCQ can't be enabled

Jens Axboe (axboe@suse.de)
Tue, 13 May 2003 08:41:42 +0200


On Tue, May 13 2003, Christer Weinigel wrote:
> Jens Axboe <axboe@suse.de> writes:
>
> > I don't think the multiple pending _and_ active is that big a deal, and
> > besides _everybody_ uses write back caching on IDE which makes TCQ for
> > writes very uninteresting.
>
> Isn't it recommended to turn off write back caching when doing
> software raid? It will be hard to guarantee the consistency of the
> raid set otherwise. So I think that TCQ can be very interesting for
> some loads.

And for journalled file systems, for instance. But yes generally you are
right.

-- 
Jens Axboe

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