Date: Tue, 1 Jun 2004 17:29:44 -0700 (PDT) From: Luke <luked@pobox.com> To: Brooks Davis <brooks@one-eyed-alien.net> Cc: freebsd-current@freebsd.org Subject: Re: Cap on network speed in CURRENT? Message-ID: <Pine.NEB.4.60.0406011720410.544@sdf.lonestar.org> In-Reply-To: <20040601225922.GA20044@Odin.AC.HMC.Edu> References: <Pine.NEB.4.60.0406011524390.20463@otaku.freeshell.org> <20040601225922.GA20044@Odin.AC.HMC.Edu>
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>> I've got a 100Mbps LAN with ethernet cards that should be capable of using >> it, yet the highest transfer rates I seem to be able to get out of my >> FreeBSD box are 260KB/s receiving and 341KB/s sending with around 200KB/s >> being more normal. >> > > On a LAN, buffer size has minimal effect except at very high speeds. > Without tuning, two 5.x boxes with gigabit interfaces connected to a > Cisco 6513 switch (one 5/10/04 and one 2/20/04) reached 187Mbps in > iperf. You're problems symptoms sound like duplex mismatch or bad > hardware to me. > > -- Brooks I've forced both full and half duplexing and gotten the same results both ways. I certainly won't rule out bad hardware. I just don't know how to troubleshoot this. Would disabling "witness" help? I've read that "witness" can slow down some things, but I don't know if network speed is one of them.
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