From owner-freebsd-hackers@freebsd.org Mon Dec 31 18:05:14 2018 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 6DCA7143B785 for ; Mon, 31 Dec 2018 18:05:14 +0000 (UTC) (envelope-from eric@metricspace.net) Received: from mail.metricspace.net (mail.metricspace.net [IPv6:2001:470:1f11:617::107]) by mx1.freebsd.org (Postfix) with ESMTP id E63167602C for ; Mon, 31 Dec 2018 18:05:13 +0000 (UTC) (envelope-from eric@metricspace.net) Received: from [172.16.0.55] (unknown [172.16.0.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) (Authenticated sender: eric) by mail.metricspace.net (Postfix) with ESMTPSA id 654FC2769 for ; Mon, 31 Dec 2018 18:05:13 +0000 (UTC) Subject: Re: Speculative: Rust for base system components To: freebsd-hackers@freebsd.org References: From: Eric McCorkle Openpgp: preference=signencrypt Autocrypt: addr=eric@metricspace.net; prefer-encrypt=mutual; keydata= mDMEWue2FBYJKwYBBAHaRw8BAQdAP/qVPlXodV6pYO5b1Jw0eFyMhyDD7B5y5eFsciutEfS0 JEVyaWMgTWNDb3JrbGUgPGVyaWNAbWV0cmljc3BhY2UubmV0PoiWBBMWCAA+FiEEDxi/0rkj zd6Uc6cFCN/CKRbBwmwFAlrnthQCGwMFCQHhM4AFCwkIBwIGFQoJCAsCBBYCAwECHgECF4AA CgkQCN/CKRbBwmyGKAD/XTSBOItCKcYCPTlsaS1aQYVEwWXXFgdjWE+WsNdZUS8A/AhYAbQZ kNZNimE2rQLoklkfTA74qF/V257NuQi4QDcLuDgEWue2FBIKKwYBBAGXVQEFAQEHQKpZVyCG ync/xqejm2C1HKGXLJTUu38RvnrR3UYECz9nAwEIB4h+BBgWCAAmFiEEDxi/0rkjzd6Uc6cF CN/CKRbBwmwFAlrnthQCGwwFCQHhM4AACgkQCN/CKRbBwmyi2wEAmvaGt8QMjGELzm27gP4c jJGUi7oigsLmTiFPkpJqPz0A+QFBSCvxJaxCMyoVru/xB6bunpJ+Wtsj8HD1EuJOn4EJ Message-ID: <3aa1875d-3490-dad6-bf6c-fe880fe2717a@metricspace.net> Date: Mon, 31 Dec 2018 13:05:09 -0500 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="qEZBkn1c2KyOkYOtfwcvTAsPb2d3hXE9Y" X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 31 Dec 2018 18:05:14 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --qEZBkn1c2KyOkYOtfwcvTAsPb2d3hXE9Y Content-Type: multipart/mixed; boundary="DyrKJGvmhc3x1O6ZqhUWQ4WYap6eFUVki"; protected-headers="v1" From: Eric McCorkle To: freebsd-hackers@freebsd.org Message-ID: <3aa1875d-3490-dad6-bf6c-fe880fe2717a@metricspace.net> Subject: Re: Speculative: Rust for base system components References: In-Reply-To: --DyrKJGvmhc3x1O6ZqhUWQ4WYap6eFUVki Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 12/31/18 9:21 AM, Igor Mozolevsky wrote: > Does the generated code size increase or decrease and does the > data-path get longer or shorter with switch from C to Rust with all > the "great features" of Rust? Are there any metrics for these? If a > CPU cache gets trashed repeatedly or data takes massive d-tours that > would be a significant downside, wouldn't it? Since most of the deltas of Rust over C are accomplished through type-checking, I don't imagine this would be an issue. --DyrKJGvmhc3x1O6ZqhUWQ4WYap6eFUVki-- --qEZBkn1c2KyOkYOtfwcvTAsPb2d3hXE9Y Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEARYIAB0WIQQPGL/SuSPN3pRzpwUI38IpFsHCbAUCXCpaVQAKCRAI38IpFsHC bJxTAP9y5Ps3AEBy7SwMs3jxyb7nCyiK9Q4F9HsVIZPidYILiwEAuenrD0i+cgVA gP28lIoMRHBBzEAKBNhnSllK9XMVegY= =Qj5K -----END PGP SIGNATURE----- --qEZBkn1c2KyOkYOtfwcvTAsPb2d3hXE9Y--