From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id A7B7B138330 for ; Tue, 9 Jan 2018 02:44:12 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 5FF69E0AD6; Tue, 9 Jan 2018 02:44:06 +0000 (UTC) Received: from mail-yw0-x22b.google.com (mail-yw0-x22b.google.com [IPv6:2607:f8b0:4002:c05::22b]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id E89CAE0AD0 for ; Tue, 9 Jan 2018 02:44:05 +0000 (UTC) Received: by mail-yw0-x22b.google.com with SMTP id r205so5115808ywb.3 for ; Mon, 08 Jan 2018 18:44:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=eaeiYqmo8KcmXDUhM9y0KV5cZTZ523SD3h+X4PXuhVk=; b=UR3P0SBBfZW9mWzteuxm0bzA4uokWiEy/gwE8hBlmJNH4RBc7iGHDRAWta5AA6uaZj yAB71aCMd6p8nupxdiEHsGikbOqa26X00L/iGWMjDAhxlQPMw+xLwrAeO8Jj2F+P7bnY 4Ly3MtY/F9pkYiXDWN0KO5zKzhviYygDcVB4yHQW45sA87NDCsAJzzREk1lYhJ9LGc4/ mH2JHMMpNbTaTSsSsmKRUlfpPpxsC6ACYnWN1tnkgcQWkD1QSryjn0xtA9hzKE5xsvVj EUeM1mTMyhwBRR79Up21vhm/76dFoviE45z4FoRseb/JuARfMRgu2MWMsb56bGwIxBDg YMng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=eaeiYqmo8KcmXDUhM9y0KV5cZTZ523SD3h+X4PXuhVk=; b=ZFzvItcfkKjnd6rOdKMQDRkze65xSWzODQ2JeQSUUtReX1EjTNkQ3tIAeeSXq/9tju XeSbkzFMaHk+0Tj2ibTD32IqK28PptDABTBSr1FNZ2lwVEa+22X7DfIv5BRxHspNab5U 49PFJZ60SOn5Wrb2Sq2HPhC2U8HWlWUKHw6cwJ+FlZRG/QSCfQcNu08/ePhOXlMRPcRN whIC5IxiQfCIbLAlmsO5zTybLP19UeHJdgnvmGh90/ZxlDW8DsYAI4pCSor09TL6xT3Z SSs/YGH5E4W3IbxMAT52pu1xpdzpBvHscccOSWJau15QUFdETZMz771+beWQN2Pcp419 p1vQ== X-Gm-Message-State: AKGB3mLaCNHvfvPIxE10mOKoEPfec5JHMuHW3dC02OgDl/dPxdAslJUE CZhddcKF3ADydlaxIaGQ5L4DQkJZmBDuq42tKe0= X-Google-Smtp-Source: ACJfBos3Zk9Y67ftBgiN3sEuHXHNrXuZtNV75sqcM3ulXguaao2oJc0renUJGzxmEPmBsiJ5OGrnH1+rdCamBQpR9z4= X-Received: by 10.129.80.85 with SMTP id e82mr12595431ywb.429.1515465844731; Mon, 08 Jan 2018 18:44:04 -0800 (PST) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Received: by 10.129.157.2 with HTTP; Mon, 8 Jan 2018 18:44:04 -0800 (PST) In-Reply-To: <20180108224343.GA12653@waltdnes.org> References: <20180108224343.GA12653@waltdnes.org> From: R0b0t1 Date: Mon, 8 Jan 2018 20:44:04 -0600 Message-ID: Subject: Re: [gentoo-user] single core athlon? To: gentoo-user@lists.gentoo.org Content-Type: text/plain; charset="UTF-8" X-Archives-Salt: b0326f08-7b63-433e-b86e-001fc503d0f2 X-Archives-Hash: a2cfaa8ded3839b8f0365e7ad349e1b5 On Mon, Jan 8, 2018 at 4:43 PM, Walter Dnes wrote: > There are "athlons" and then there are "athlons". Check the gcc page > https://gcc.gnu.org/onlinedocs/gcc-6.4.0/gcc/x86-Options.html#x86-Options > for an idea of what's what. You need at least the "k8" version. The > ultimate way to find out is to download the amd64 minimal install ISO > https://wiki.gentoo.org/wiki/Handbook:AMD64/Full/Installation#Obtain_the_media > and try to boot off it. > I was under the impression that disabling SMP on single core systems could lead to a performance increase, but wasn't necessary. Is the deciding factor actually processor family? And - there are GCC versions or distributions that have already dropped support for x86_64 processors? I'd only read about 32 bit families being dropped.