From owner-freebsd-scsi Thu Apr 30 08:01:49 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id IAA21194 for freebsd-scsi-outgoing; Thu, 30 Apr 1998 08:01:49 -0700 (PDT) (envelope-from owner-freebsd-scsi@FreeBSD.ORG) Received: from kaori.communique.net (kaori.communique.net [204.27.67.55]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id IAA21186 for ; Thu, 30 Apr 1998 08:01:45 -0700 (PDT) (envelope-from rzig@verio.net) Received: by kaori.communique.net with Internet Mail Service (5.0.1458.49) id ; Thu, 30 Apr 1998 10:01:25 -0500 Message-ID: From: Raul Zighelboim To: "'scsi@freebsd.org'" Cc: "'n@nectar.com'" Subject: DPT driver performance Date: Thu, 30 Apr 1998 10:01:22 -0500 X-Priority: 3 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.0.1458.49) Content-Type: text/plain Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Hello there; I run iozone on a DPT controler, and compared it to an ahc controler, and found: (iozone 512): READ WRITE drive cache AHC 24196998 b/s 7751774 b/s SEAGATE ST34572W system ram DPT 32262665 b/s 4165574 b/s SEAGATE ST34572WC 64mb simms on board + system ram (iozone 1024): AHC 9764063 b/s 7473976 b/s DPT 12111293 b/s 3966034 b/s Is there anything I can do to improve the DPT performance? Can I safelly turn on any of the following: dpt_pci.c:#ifdef DPT_ALLOW_MEMIO. This are my controler options: options AHC_TAGENABLE options AHC_SCBPAGING_ENABLE options AHC_ALLOW_MEMIO options DPTOPT options DPT_MEASURE_PERFORMANCE Thanks. ================================================== Raul Zighelboim rzig@verio.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message