From owner-freebsd-hackers Thu Jul 25 14:12:25 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id OAA01718 for hackers-outgoing; Thu, 25 Jul 1996 14:12:25 -0700 (PDT) Received: from etinc.com ([204.141.95.6]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id OAA01708 for ; Thu, 25 Jul 1996 14:12:18 -0700 (PDT) Received: from dialup-usr11.etinc.com (dialup-usr11.etinc.com [204.141.95.132]) by etinc.com (8.6.12/8.6.9) with SMTP id RAA14704; Thu, 25 Jul 1996 17:20:03 -0400 Date: Thu, 25 Jul 1996 17:20:03 -0400 Message-Id: <199607252120.RAA14704@etinc.com> X-Sender: dennis@etinc.com X-Mailer: Windows Eudora Version 2.0.3 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: "Lars Jonas Olsson" From: dennis@etinc.com (Dennis) Subject: Re: Read Bandwidth from PCI to Triton II? Cc: hackers@freebsd.org Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > I have a BitFlow Raptor PCI frame grabber (using /dev/io and /dev/mem >and a library from bitFlow). With a Neptune based MB I could get >20MB/s read bandwidth, using Triton II I only get 14 MB/s. > > Has anyone managed to get higher bandwidth from any PCI board >with a Triton or Triton II based computer? > > What is the best memcpy for this application? I copy 1MB at a time. Please don't use the term "bandwidth"....the bandwidth of PCI is always the same (given a clock speed). The transfer rate is an entirely different issue..... Dennis ---------------------------------------------------------------------------- Emerging Technologies, Inc. http://www.etinc.com Synchronous Communications Cards and Routers For Discriminating Tastes. 56k to T1 and beyond. Frame Relay, PPP, HDLC, and X.25 for BSD/OS, FreeBSD and LINUX