From owner-freebsd-net@FreeBSD.ORG Tue Jul 23 04:05:57 2013 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 2AB9FBB4 for ; Tue, 23 Jul 2013 04:05:57 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-qc0-x22b.google.com (mail-qc0-x22b.google.com [IPv6:2607:f8b0:400d:c01::22b]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id E3ED82475 for ; Tue, 23 Jul 2013 04:05:56 +0000 (UTC) Received: by mail-qc0-f171.google.com with SMTP id n1so4039044qcw.2 for ; Mon, 22 Jul 2013 21:05:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=yRR0CtI8dfK++c14hZZBjR5s2mGmBJK29XjDtJ58opI=; b=t0utmy1RKEHNKhm3DWX9Q/t+9G09uffPYoZPAlB/FHcPqbdlPNl9H+D8oF82iNhTKO D6ET+GuQGhX7FQ8kOoWOl5RV9VzmFCRftJb/iRUeN51fe8+ZxC5m0UpB9fKpGKu974VX v5eI1zQdsnM2IG/9+W/OFEQgEIANQ15vjPL2tMSZXUNfPc2jGLXD7IypELAbEZr2KuXs h/njYQ6BsuJybR/x3Z8uEv0CbBtc2MXxqJgxuZuWNekf/YdvzIhPxmFCFPS0VVMHfE5p S4+OT2eEv9XttK8G53A7ng9iWnHR7WZZchmKEtEXtpIlGRGuA5AHNeqjR1rFy6EkEHbv Gb7w== MIME-Version: 1.0 X-Received: by 10.49.58.70 with SMTP id o6mr35650783qeq.1.1374552355987; Mon, 22 Jul 2013 21:05:55 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.224.195.72 with HTTP; Mon, 22 Jul 2013 21:05:55 -0700 (PDT) In-Reply-To: <51EDA37A.9040200@mail.ru> References: <51E0E2AF.7090404@mail.ru> <51E44E2F.8060700@mail.ru> <51E455D5.2090403@mail.ru> <20130722200205.GO26412@funkthat.com> <51EDA37A.9040200@mail.ru> Date: Mon, 22 Jul 2013 21:05:55 -0700 X-Google-Sender-Auth: C8yt9vWBVQBYb5LDgfaKkbR5cgU Message-ID: Subject: Re: SO_REUSEPORT: strange kernel balancer behaviour From: Adrian Chadd To: trafdev Content-Type: text/plain; charset=ISO-8859-1 Cc: Sepherosa Ziehau , freebsd-net@freebsd.org, John-Mark Gurney X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 Jul 2013 04:05:57 -0000 On 22 July 2013 14:26, trafdev wrote: > Actually overhead is almost zero, the real problem is in non-equivalent load > distribution between processes. > As https://lwn.net/Articles/542629/ mentions - > "At Google, they have seen a factor-of-three difference between the thread > accepting the most connections and the thread accepting the fewest > connections;" > I'm getting almost same results On FreeBSD? -adrian