Date: Thu, 5 Dec 2013 19:50:58 -0800 From: Adrian Chadd <adrian@freebsd.org> To: Sepherosa Ziehau <sepherosa@gmail.com> Cc: =?ISO-8859-1?Q?Ermal_Lu=E7i?= <eri@freebsd.org>, freebsd-net <freebsd-net@freebsd.org>, Oleg Moskalenko <mom040267@gmail.com>, Tim Kientzle <kientzle@freebsd.org>, "freebsd-current@freebsd.org" <freebsd-current@freebsd.org> Subject: Re: [PATCH] SO_REUSEADDR and SO_REUSEPORT behaviour Message-ID: <CAJ-Vmoko%2BGz4PdYJTaLg-22BrQqG0qO9hq%2BZadPwwCPgkTsGNg@mail.gmail.com> In-Reply-To: <CAMOc5cznTT-0qOUrG1F55=yPpbWfn3EqWT4%2BV_RDqG6%2BDCckOQ@mail.gmail.com> References: <CAPBZQG29BEJJ8BK=gn%2Bg_n5o7JSnPbsKQ-=3=6AkFOxzt%2B=wGQ@mail.gmail.com> <4053E074-EDC5-49AB-91A7-E50ABE36602E@freebsd.org> <CALDtMrKvwXW-ou8X7zsKx2ST=dKD7FqHvvnQtGo30znTWU%2BVQQ@mail.gmail.com> <CAPBZQG0=bcHyv7aZse=WKfjk5=6D2-%2B6EQHiAaDZqGtaodhMMA@mail.gmail.com> <CAMOc5cwFGwk0dS5VT-YxfP3Yt38R8aO-KJTX6W832uOFEdavgA@mail.gmail.com> <CAJ-Vmonc7SVxndmVN1jphFRa5svD5BdnMrCudSbYkx4djHXW0A@mail.gmail.com> <CAMOc5cyM-%2Bvau7BsZQ5F5L95EQgN=pJqru=9aK_0aJ%2BVUk=gxQ@mail.gmail.com> <CAJ-VmokQ_C_t=pZF5QnWMzjzw6YVqTD4ny3hv_cLDch-m2EOmg@mail.gmail.com> <CAMOc5cznTT-0qOUrG1F55=yPpbWfn3EqWT4%2BV_RDqG6%2BDCckOQ@mail.gmail.com>
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I was thinking of n netisrs per m CPUs, where n < m; or maybe 1 netisr for m CPUs, where m is less than the total number. Having 48 cores contending on netisr stuff is a bit crazy. It's highly unlikely you need that many cores doing packet pushing. -a
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