Date: Wed, 28 Jan 1998 20:32:14 +0100 From: sthaug@nethelp.no To: remy@synx.com Cc: freebsd-smp@FreeBSD.ORG Subject: Re: seeking for perfs... Message-ID: <13604.886015934@verdi.nethelp.no> In-Reply-To: Your message of "Wed, 28 Jan 1998 19:16:54 -0100 (GMT)" References: <Pine.A32.3.91.980128190814.16326M-100000@rs1>
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> For now, i would like to now if i can do something to speed-up the > network. The machine runs DFE500TX 100Mbps FDX card connected to a > switch. My questions are : > > Is the 58Mbps i get a normal rating ? Can i get more ? Using what card ? You should be able to come very close to saturating a 100 Mbps Ethernet with that card, unless you have a card with the 21140-AA chip. Later chip versions are better (the AA version can't read multiple words in one PCI bus transaction). Using ttcp, that comes out to 100 * 1440/1538 = 93.6 Mbit/s application to application, or 100 * 1460/1538 = 94.9 Mbit/s if you turn off RFC 1323 and RFC 1644 support. I've measured 93.57 Mbit/s (with 1323/1644 support turned on) myself - between a PPro-200 (21140 card) and a P-133 (Pro 100/B card). Steinar Haug, Nethelp consulting, sthaug@nethelp.no
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