From owner-freebsd-questions@freebsd.org Thu Apr 7 15:25:48 2016 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id DCCEBB072BA for ; Thu, 7 Apr 2016 15:25:48 +0000 (UTC) (envelope-from vrwmiller@gmail.com) Received: from mail-oi0-x230.google.com (mail-oi0-x230.google.com [IPv6:2607:f8b0:4003:c06::230]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id A411A1E25 for ; Thu, 7 Apr 2016 15:25:48 +0000 (UTC) (envelope-from vrwmiller@gmail.com) Received: by mail-oi0-x230.google.com with SMTP id p188so102855063oih.2 for ; Thu, 07 Apr 2016 08:25:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:date:message-id:subject:from:to; bh=je8i+2s6K8JPvIBvG5UiUI5gJiYRnRW+T71zTJi/XmI=; b=m4hGGotD0cCRub2W1a89ST9PDzLFhc+lSNGABVuatqbfyNIC+4eO70iv0KQpy8Wy40 2iRAXbaHZ5u9UR17qlm1TfOfRg+uRNjL7fX+u0yFW4mlU9E4umAsSNo7B2C4wa7TSO2X U6AvdUHCleGRWeIL1BixKRSjxFlql+6BFczUF2GBKoUBvuzyxBYZpaIrDb7FItmVW5kF RTc12NCdj9oTZNy7x6tSULBhgNxDUyh7S+zwnRrsYTDp9goykvZe6FmoIeP7C7sevfz3 fCNsayfDXzDkSiRkVRkHe72W6t/eKBgQ2gpmXH/m/ZQ+PrC0dHeXTHYi60YpWtomm94A KELg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:date:message-id:subject:from :to; bh=je8i+2s6K8JPvIBvG5UiUI5gJiYRnRW+T71zTJi/XmI=; b=HcVySRy5ioifeNV6m5zA6XV5WexibLV5I0dH4zt6soJ1a8zFy6VXlOoL/U0hb9E4mA 7OIRDJHVaZcAhBD88bui/zxrkqVcs/cDXP+dfofWk4hl67oDa10CFN8udr3wL+QP1ylW FoUfgt5IepYnw+rwMfVE1KOLjdDUN4F3IZfoFMgZ2ubtwW1Yjb3lECwHIAJlqg0hUyb3 IccBjWagStRFQ6bzYPwNqyDe+u7bGlRFyiciN4hTiUSFjvFRQ0/avzwvD/EnAPztUFZ+ KuJ2xp2THRywoT2tF6BP6Nd9CQlpGcPSJhMLqOx9ml84hIPcSbYTcNEDwZFYZSlwyLZv xPrg== X-Gm-Message-State: AD7BkJJvj0vEOIdb+gzORg46Ai+wYIeFFrYeZIo5P4Qd818CvlsuW3XM0ZdQLFnrD1Tom7S9jq37JZKYF/Yq5w== MIME-Version: 1.0 X-Received: by 10.202.239.7 with SMTP id n7mr1738732oih.15.1460042747961; Thu, 07 Apr 2016 08:25:47 -0700 (PDT) Sender: vrwmiller@gmail.com Received: by 10.202.198.18 with HTTP; Thu, 7 Apr 2016 08:25:47 -0700 (PDT) Date: Thu, 7 Apr 2016 11:25:47 -0400 X-Google-Sender-Auth: mnyDGnvg1qiRYoCdGctHnJMzVEo Message-ID: Subject: AIO in 10.0-RELEASE From: Rick Miller To: FreeBSD Questions Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.21 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Apr 2016 15:25:49 -0000 Hi all, A user has been implementing AIO features in an application. They assert that, despite aio(4) stating that it is enabled either statically (with VFS_AIO in the kernel config) or dynamically (kldload), in their development environment there was no requirement for either of these methods of enabling AIO. My google-foo is failing me when it comes to FreeBSD's AIO. This question defies logic, but is it possible that AIO works by default in earlier versions of 10.0 and not in more recent version of 10.0 without any local system changes? -- Take care Rick Miller