Date: Sun, 08 Aug 2010 22:10:30 -0700 From: perryh@pluto.rain.com To: jcw@speakeasy.net Cc: freebsd-questions@freebsd.org Subject: Re: Typical Network Performance Message-ID: <4c5f8dc6.IUSZ/egsTlgYHE/G%perryh@pluto.rain.com> In-Reply-To: <4C5F7141.9030203@speakeasy.net> References: <4C55E4B5.7000201@speakeasy.net> <8627B125-F3BB-42B2-98CF-600E21A93A2D@hiwaay.net> <AANLkTi=g%2BBGLJRQfyz7v3dSQ6k%2BxNQzVEEnSBdxpJfGF@mail.gmail.com> <5628C9CD-0F16-4C0E-8B89-B4ECCA35C933@hiwaay.net> <4C5F7141.9030203@speakeasy.net>
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"Jason C. Wells" <jcw@speakeasy.net> wrote: > By process of elimination (swap cables, swap ports, try different > host pairs) I was able to discover that a single server on my home > LAN was getting about 1.6% performance compared to other servers > getting 94% ... > What would be the next step to figuring out why this host's network > performance is slow? My next step would be to check whether this host and its hub/switch port agree on speed and duplex -- occasionally some combination of netcard phy and switch type gets the negotiation wrong. Duplex mismatch, in particular, can have huge performance impact.
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