Date: Fri, 25 May 2007 14:38:07 +0200 From: "Claus Guttesen" <kometen@gmail.com> To: Stephen.Clark@seclark.us Cc: freebsd-stable@freebsd.org Subject: Re: network performance 6.1 stable vs 4.9 Message-ID: <b41c75520705250538g514227c0v816a63a425aa5d49@mail.gmail.com> In-Reply-To: <4656D0FB.5070200@seclark.us> References: <4656D0FB.5070200@seclark.us>
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> We have a network appliance that is currently based on 4.9. We are in > the process of releasing > a new version based on 6.1 stable. > > In our testing using nttcp thru the appliance we see insignifant > difference in thruput between the 2 > versions in a controlled environment - aproximately 94mbs on a 100mb lan. > > Are there any sysctl tunables that may affect performance going over the > internet > with a slower link, dropped packets, etc that could cause this? Have you tried options DEVICE_POLLING in the kernel? If you want to try yuo can find a section in the file NOTES located the same place as your kernel. Is the kernel cusomized? Have you enabled -O2 as optimization? Do you consider release 6.2 rather than 6.1? -- regards Claus When lenity and cruelty play for a kingdom, the gentlest gamester is the soonest winner. Shakespeare
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