Date: Tue, 15 Aug 2006 13:48:53 +0200 From: Stanislaw Halik <sthalik@tehran.lain.pl> To: freebsd-current@freebsd.org Subject: Re: throughput and interrupts Message-ID: <20060815114853.GA10774@localhost.localdomain> In-Reply-To: <200608151627.37828.root@solink.ru> References: <200608151627.37828.root@solink.ru>
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On Tue, Aug 15, 2006, Bachilo Dmitry wrote: > I am completely stuck. I have a router, that rules three subnets. At first > there were Allied Telesyn's netcards with realtek chipsets. I am using > ipfw+natd and I had like 3,5 megabytes per second with 20 per cent of > interrupt load. [...] > I just don't know what to try, to gain at least 9 mb/s, because this is what I > get at home with the same cards, the same processor, with no polling and > throgh the same provider. Did you try using pf instead of ipfw+natd? natd is known to be inefficient, as the kernel copies packets to and from the userland. Not sure if this is the cause of your high interrupt load. What does `top -S' show as the cpu-generating irq? -- Some people say that a monkey would bang out the complete works of Shakespeare on a typewriter give an unlimited amount of time. In the meantime, what they would probably produce is a valid sendmail configuration file. -- Nicholas Petreley
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