Date: Thu, 24 Jul 2014 08:47:17 -0400 From: John Jasen <jjasen@gmail.com> To: "Andrey V. Elsukov" <bu7cher@yandex.ru>, FreeBSD Net <freebsd-net@freebsd.org>, "Alexander V. Chernikov" <melifaro@FreeBSD.org> Subject: Re: fastforward/routing: a 3 million packet-per-second system? Message-ID: <53D10055.1050304@gmail.com> In-Reply-To: <53D0D0B2.6080600@yandex.ru> References: <53CE80DD.9090109@gmail.com> <53D0D0B2.6080600@yandex.ru>
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On 07/24/2014 05:24 AM, Andrey V. Elsukov wrote: > On 22.07.2014 19:18, John Jasen wrote: >> Feedback and/or tips and tricks more than welcome. >> >> Outstanding questions: >> >> Would increasing the number of processor cores help? > AFAIR, increasing the number of cores will lead to worse results. > With patched and tuned FreeBSD we able to route (with fastforwarding) > about 7 Mpps IPv4 and 2.5Mpps IPv6. But the stock system is far from > even half of this results. > Increasing the physical CPU count can (and probably will) result in performance degradation. However, from what I've seen, balancing IRQs across the cores on a single physical CPU seems to help. I am curious as well, as to how you achieved 7 Mpps. Can you share the system specs, the patches and tuning? Thanks! -- John Jasen (jjasen@gmail.com)
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