problems increasing SG_BIG_BUFF

Andreas Buesching (crunchy@informatik.uni-bremen.de)
Wed, 9 Jun 1999 11:17:55 +0200

Hello Developers,

my situation:
SuSE 6.1
new kernel 2.2.9
/usr/include/scsi is linked to /usr/src/linux/include/scsi

problem:
I tried to increase the generic-scsi buffer. The man-pages told me to change
SG_BIG_BUFF. the new kernel uses another define (SG_SCATTER_SZ), but there are
also these two lines:

#define SG_BIG_BUFF SG_SCATTER_SZ /* for backward compatibility */
/* #define SG_BIG_BUFF (SG_SCATTER_SZ * 8) */ /* =256KB, if you want */

So I increased SG_BIG_BUFF and compiled the kernel and sane again.
The result was: nothing. Some months ago when I used an older kernel (2.0.x),
there was an result: My scanner did not stop every 5mm to transfer the data (it
sounds horrible if it stops every 5mm).

My question:
Can anybody help me? How to increase the buffer?

THANX FOR READING

crunchy

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WWW:	http://www.informatik.uni-bremen.de/~crunchy/
	http://alive.informatik.uni-bremen.de/~crunchy/
	http://www.penguinpowered.com/~crunchy/


E-Mail:	mailto:crunchy@informatik.uni-bremen.de
	mailto:crunchy@tzi.de
	mailto:crunchy@tzi.org
	mailto:crunchy@mbus.org
	mailto:crunchy@wiptel.org
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	mailto:crunchy@wiptel.net
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