Date: Tue, 20 Nov 2012 18:23:26 -0800 From: Adrian Chadd <adrian@freebsd.org> To: khatfield@socllc.net Cc: Barney Cordoba <barney_cordoba@yahoo.com>, Jim Thompson <jim@netgate.com>, Alfred Perlstein <bright@mu.org>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: Re: FreeBSD boxes as a 'router'... Message-ID: <CAJ-VmomD4AUhCGNkv==e6qLwpsRK5a25TjL_Zrk8X=vJLBMyuA@mail.gmail.com> In-Reply-To: <250266404.35502.1353464214924@238ae4dab3b4454b88aea4d9f7c372c1.nuevasync.com> References: <1353448328.76219.YahooMailClassic@web121602.mail.ne1.yahoo.com> <E1F4816E-676C-4630-9FA1-817F737D007D@netgate.com> <50AC08EC.8070107@mu.org> <832757660.33924.1353460119408@238ae4dab3b4454b88aea4d9f7c372c1.nuevasync.com> <CAJ-Vmok8Ybdi%2BY8ZguMTKC7%2BF5=OxVDog27i4UgY-s3MCZkGcQ@mail.gmail.com> <250266404.35502.1353464214924@238ae4dab3b4454b88aea4d9f7c372c1.nuevasync.com>
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The next time you have a chance to do high PPS tests, please compile in KTR and take a schedgraph trace or two. Read the schedgraph.py source in /usr/src/tools/ for a quick overview. It'd be nice to have a public record somewhere of this issue diagnosed. It may have just been some of the really odd edge case behaviour the intel 10GE NICs did (at least, before scottl and the netflix team were let at it.) Adrian
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