From owner-freebsd-scsi Thu Oct 17 14:37:01 1996 Return-Path: owner-freebsd-scsi Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id OAA01742 for freebsd-scsi-outgoing; Thu, 17 Oct 1996 14:37:01 -0700 (PDT) Received: from brasil.moneng.mei.com (brasil.moneng.mei.com [151.186.109.160]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id OAA01725 for ; Thu, 17 Oct 1996 14:36:40 -0700 (PDT) Received: (from jgreco@localhost) by brasil.moneng.mei.com (8.7.Beta.1/8.7.Beta.1) id QAA01672; Thu, 17 Oct 1996 16:35:30 -0500 From: Joe Greco Message-Id: <199610172135.QAA01672@brasil.moneng.mei.com> Subject: NCR: Max tags? To: se@zpr.uni-koeln.de Date: Thu, 17 Oct 1996 16:35:29 -0500 (CDT) Cc: freebsd-scsi@freebsd.org X-Mailer: ELM [version 2.4 PL24] Content-Type: text Sender: owner-freebsd-scsi@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Hello Stefan, I noticed that in 2.1.5R, /usr/src/sys/pci/ncr.c, there is a constant limiting SCSI_NCR_MAX_TAGS to 4. Assuming that I am using fairly modern drives (Seacrate ST31055N "Ultra-SCSI" Hawk-2 1GB, Seacrate ST15150N Barra 4GB), is there a problem with raising this constant? What would a good number be? Always looking for a performance tweak or two, ... JG