From owner-svn-src-all@freebsd.org Fri Nov 18 14:07:08 2016 Return-Path: Delivered-To: svn-src-all@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 AF2B5C4847F; Fri, 18 Nov 2016 14:07:08 +0000 (UTC) (envelope-from cochard@gmail.com) Received: from mail-wm0-x22a.google.com (mail-wm0-x22a.google.com [IPv6:2a00:1450:400c:c09::22a]) (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 57672F93; Fri, 18 Nov 2016 14:07:08 +0000 (UTC) (envelope-from cochard@gmail.com) Received: by mail-wm0-x22a.google.com with SMTP id a197so40557033wmd.0; Fri, 18 Nov 2016 06:07:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=c6jxxQsfC4JnyP5EQNUXbLL5NBsVPL5zYsvmbOk/rq4=; b=OA8oEVsZuZkGDKFnpIp7xsDOBFA2ZNCxN2DGYINXCWVmu8qP9rZzCBAdjN9T22ElyU kj+L5Z8Gs66IGAGaUa2hvYnmHVOxs6hNoBgQrg8aZwxXXzUyqo2v+epS5qQoyLE+yBHj Fwh4bYjSuEjDkXH3J6XMWnperDoqQplI963jBYbkjSk1krInzxvvqgqmEx0ZneA3kmn5 yPE7iiWK4lWWLFPrZj83kmMJBQa3OmOrHVF1neCYP5zm9nbfGFHJAwkJwmeLwNyvH7mH WAGR629pMLMTe0QzuYSd8Z6XnvR0c2lovX02z8B98e2kgEfy9QllIL+6//8dYU7Tl1Eh zOIw== 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:in-reply-to:references:from :date:message-id:subject:to:cc; bh=c6jxxQsfC4JnyP5EQNUXbLL5NBsVPL5zYsvmbOk/rq4=; b=dHoMNBK1m6ikDn5+R9VQvPfH6BUPI/2LINqgrzZ25cxmRYclBBVDCqId3G2aYIGtPJ lAN0wjreUwANQ8Rw6EQMjTiX4K4lWQwoA27S1/zsrATuT6qUTDW6L+lZLzsh7K693YPR jNHOYkKopHBgKiup5xUT2+BP3vo3L95stllLzAYrd4ei41fLYd7j34wX5gqELFeQdtqo esP+ItOf9cyBbg1F9eaqHem9YDvoVjoGP3UseNeRc9kwD74DAfn4Ywps5V958k35dyhL /97HndDflXzSXiNGTGmZGKYE7jDm6dywhDjooAyXQTEqcYW5CCMJeqDAp8KFSCFKjwag VVOA== X-Gm-Message-State: ABUngvcV6QuM2A1jvxa+FJDnS7rN+xqrf8SJMagpLgRmWvresnkiaFPVT6b0bnB0WrFGSvCwC11ZYlopIjWn/w== X-Received: by 10.28.133.144 with SMTP id h138mr24617655wmd.12.1479478026742; Fri, 18 Nov 2016 06:07:06 -0800 (PST) MIME-Version: 1.0 Sender: cochard@gmail.com Received: by 10.194.28.7 with HTTP; Fri, 18 Nov 2016 06:06:46 -0800 (PST) In-Reply-To: <201608012148.u71LmbaA003739@repo.freebsd.org> References: <201608012148.u71LmbaA003739@repo.freebsd.org> From: =?UTF-8?Q?Olivier_Cochard=2DLabb=C3=A9?= Date: Fri, 18 Nov 2016 15:06:46 +0100 X-Google-Sender-Auth: sSHf6obH7bhKXaUFGZvhy8bblYY Message-ID: Subject: Re: svn commit: r303643 - in head/sys: kern sys To: Mateusz Guzik Cc: src-committers , svn-src-all , svn-src-head Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.23 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: Fri, 18 Nov 2016 14:07:08 -0000 On Mon, Aug 1, 2016 at 11:48 PM, Mateusz Guzik wrote: > Author: mjg > Date: Mon Aug 1 21:48:37 2016 > New Revision: 303643 > URL: https://svnweb.freebsd.org/changeset/base/303643 > > Log: > Implement trivial backoff for locking primitives. > > > =E2=80=8BI was checking FreeBSD's forwarding speed evolution of year 2016= =E2=80=8B, when I found a unexpected improvement: http://dev.bsdrp.net/benchs/2016.jan-nov.SM5018A-FTN4-Chelsio.png Something append between r303601 (July 31th) and r303818 (August 6th). ae@ advices me to bench this specific commit: http://dev.bsdrp.net/benchs/r303643.png Thanks ! Olivier