[3796] in linux-scsi channel archive
Change sg maximum?
daemon@ATHENA.MIT.EDU (Zlatko Calusic)
Mon Apr 27 21:22:53 1998
To: linux-scsi@vger.rutgers.edu
Reply-To: Zlatko.Calusic@CARNet.hr
From: Zlatko Calusic <Zlatko.Calusic@CARNet.hr>
Date: 28 Apr 1998 03:09:40 +0200
In-Reply-To: Marc SCHAEFER's message of "25 Apr 1998 10:24:32 +0200"
Marc SCHAEFER <schaefer@alphanet.ch> writes:
> Zlatko Calusic <Zlatko.Calusic@CARNet.hr> wrote:
> > Only then I started to be jealous of new IDE drive, since it has
> > slightly higher raw transfer rate. Of course, SCSI is still better
> > since it seeks much faster, but... :)
>
> One thing you could try is mke2fs -b 4096 or to increase
> the sg maximum in your driver.
>
Your second idea is very interesting to me.
I heard something about changing sg maximum, but unfortunately my
knowledge of SCSI code is next to zero.
So, I'll first check that we're speaking of the same thing.
aic7xxx:
/*
* Maximum number of SG segments these cards can support.
*/
#define AIC7XXX_MAX_SG 128
Is that the line I ought to change?
What I would like to know is what are implications of changing
(raising or lowering) that number?
Could some good soul with knowledge of SCSI explain what is to gain
and what is to loose?
TIA!
--
Posted by Zlatko Calusic E-mail: <Zlatko.Calusic@CARNet.hr>
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