From owner-svn-src-all@freebsd.org Mon Dec 30 21:00:00 2019 Return-Path: Delivered-To: svn-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 728B11E9AAA for ; Mon, 30 Dec 2019 21:00:00 +0000 (UTC) (envelope-from 0100016f589bb7ad-b6389405-4433-4559-a9e0-9ce31a192a00-000000@amazonses.com) Received: from a8-52.smtp-out.amazonses.com (a8-52.smtp-out.amazonses.com [54.240.8.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 47mqZ674rGz4SxC for ; Mon, 30 Dec 2019 20:59:58 +0000 (UTC) (envelope-from 0100016f589bb7ad-b6389405-4433-4559-a9e0-9ce31a192a00-000000@amazonses.com) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple; s=vnqrkfnvu6csdl6mwgk5t6ix3nnepx57; d=tarsnap.com; t=1577739598; h=Subject:To:References:From:Message-ID:Date:MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; 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FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; R_SPF_ALLOW(-0.20)[+ip4:54.240.0.0/18:c]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[tarsnap.com]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[tarsnap.com:+,amazonses.com:+]; RCVD_IN_DNSWL_NONE(0.00)[52.8.240.54.list.dnswl.org : 127.0.15.0]; FORGED_SENDER(0.30)[cperciva@tarsnap.com,0100016f589bb7ad-b6389405-4433-4559-a9e0-9ce31a192a00-000000@amazonses.com]; RCVD_COUNT_ZERO(0.00)[0]; MIME_TRACE(0.00)[0:+]; IP_SCORE(-1.86)[ip: (-1.51), ipnet: 54.240.8.0/21(-4.61), asn: 14618(-3.11), country: US(-0.05)]; ASN(0.00)[asn:14618, ipnet:54.240.8.0/21, country:US]; FORGED_MUA_THUNDERBIRD_MSGID_UNKNOWN(2.50)[]; FROM_NEQ_ENVFROM(0.00)[cperciva@tarsnap.com, 0100016f589bb7ad-b6389405-4433-4559-a9e0-9ce31a192a00-000000@amazonses.com] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 30 Dec 2019 21:00:00 -0000 On 2019-12-30 12:30, Alan Cox wrote: > Author: alc > Date: Mon Dec 30 20:30:31 2019 > New Revision: 356207 > URL: https://svnweb.freebsd.org/changeset/base/356207 > > Log: > Determine whether the MMU hardware is capable of updating a page table > entry's access flag and dirty state, and enable this feature when it's > available. Am I right in thinking that this should result in improved performance under load? (I'm wondering if it's time to redo my amd64 vs arm64 EC2 benchmarks.) -- Colin Percival Security Officer Emeritus, FreeBSD | The power to serve Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid