Date: Sat, 15 Mar 2014 17:33:22 +0000 From: "Robert N. M. Watson" <rwatson@FreeBSD.org> To: Adrian Chadd <adrian@freebsd.org> Cc: "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org> Subject: Re: svn commit: r263198 - in head/sys: amd64/conf conf net netinet netinet6 sys Message-ID: <33030492-A1A3-4A00-B2B3-66B9B2DFB461@FreeBSD.org> In-Reply-To: <CAJ-Vmom6bCamx3Smgz4w%2Bet5Q7L2%2BKqK9_ZK6Gn0i0Dgo4WmSg@mail.gmail.com> References: <201403150057.s2F0vofg081606@svn.freebsd.org> <CAJ-Vmo=5YdLTkD0Dv5qHQokTQxtjFB=t2NqXfFzuZRLqjOOu%2Bg@mail.gmail.com> <alpine.BSF.2.00.1403151202440.36417@fledge.watson.org> <CAJ-Vmom6bCamx3Smgz4w%2Bet5Q7L2%2BKqK9_ZK6Gn0i0Dgo4WmSg@mail.gmail.com>
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On 15 Mar 2014, at 17:29, Adrian Chadd <adrian@freebsd.org> wrote: >> I'd characterise this work as "early" in that it would benefit from >> performance optimisation, device-driver work, and feature enhancement = (e.g., >> not just stuff like load rebalancing, but also statistics to detect = RSS >> configuration problems leading to work being directed to the wrong = CPU, >> etc). In any case, hopefully this is a useful starting point for = people >> doing work in this space. >=20 > Yup. I have a bunch of diagnostics and statistics to add to ensure > things are staying on the right CPU. >=20 > I'll spin them up on netperf soon and dive into UDP testing/fixing. Excellent -- netstat support for monitoring queue and RSS behaviour is = definitely the next step to run in, here. I'd like to see us extend the = kernel's device-driver independent data structures and statistics to = allow interfaces to expose additional hardware queue = information/statistics as well as higher-level netisr, pcbgroup, and RSS = information. Robert=
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