From owner-freebsd-hackers Wed Apr 3 16:37:19 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id QAA07585 for hackers-outgoing; Wed, 3 Apr 1996 16:37:19 -0800 (PST) Received: from etinc.com (etinc.com [204.141.244.98]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id QAA07570 for ; Wed, 3 Apr 1996 16:37:12 -0800 (PST) Received: from mail.etinc.com ([204.141.95.148]) by etinc.com (8.6.12/8.6.9) with SMTP id TAA06690; Wed, 3 Apr 1996 19:39:59 -0500 Date: Wed, 3 Apr 1996 19:39:59 -0500 Message-Id: <199604040039.TAA06690@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: "Amancio Hasty, Jr." From: dennis@etinc.com (dennis) Subject: Re: Freebsd Vs. Linux Cc: tjeffers@nastg.gsfc.nasa.gov, hackers@freebsd.org Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk >Karen Jefferson x2857 wrote: >> >> We are in the midst of a development project which uses alot of UDP >> and serial communications. >> >> Although our preference had been to use FreeBSD, the UDP >> performance was terrible (200 Kbps over Ethernet), and we >> kept getting ENOBUF errors which makes FreeBSD an unacceptable choice. >> Our previous posts for possible parameters to tune didn't >> turn up anything helpful, and messages to freebsd.org haven't been >> answered yet. >> >> The TCP performance was the same for both Linux and FreeBSD, and UDP >> testing on all other platforms in our facility proved okay for Solaris, >> SunOS, & SCO. >> >> Is there anything we can do to improve the UDP performance of FreeBSD? >> Why does it care about buffering for UDP? Please respond via email >> to tjeffers@nastg.gsfc.nasa.gov. Thanks. Your tests are seriously defective. Every networking test Ive ever done had linux placing a very sad third behind FreeBSD and BSD/OS. With an intimate understandiing of their internal structuring, I'm not surprised. I dont know about the udp specifically, but if your tests show that TCP is the same then you either have the FreeBSD system all hosed up or your test isn't testing much. FreeBSD is MUCH faster than LINUX. 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