Re: speeding up ugen by an order of magnitude.

From: Poul-Henning Kamp <phk_at_phk.freebsd.dk>
Date: Wed, 07 Jul 2004 11:16:14 +0200
In message <20040707091311.GE12877_at_cicely12.cicely.de>, Bernd Walter writes:
>On Tue, Jul 06, 2004 at 04:32:28PM -0700, Julian Elischer wrote:

>What about those options:
>- limit the allocated memory to the user request so we don't take the
>  whole 128k if not reuired.
>- Do interleaving with 2 or more xfers if the read request is known to
>  take more xfers.

I would consider ugen to be a primary candidate to use physio like
I belive scsi-tape drives do ?

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk_at_FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
Received on Wed Jul 07 2004 - 07:16:26 UTC

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