[6081] in Athena Bugs

home	help	back	first	fref	pref	prev	next	nref	lref	last	post

RT kernel caio/scsi.c

daemon@ATHENA.MIT.EDU (John Carr)
Fri Sep 21 01:34:08 1990

To: bugs@ATHENA.MIT.EDU
Date: Fri, 21 Sep 90 01:33:52 EDT
From: John Carr <jfc@ATHENA.MIT.EDU>



The line:

	scsiaddr->scsi_dma_mode = SCSI_BURST_LEN4;

near the start of the function scsidmago() should be changed to read

	scsiaddr->scsi_dma_mode = SCSI_BURST_LEN8;

I have observed this to increase the speed of large reads from the IBM
SCSI drive by 20%.

This should be forwarded to IBM.

home	help	back	first	fref	pref	prev	next	nref	lref	last	post