From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail1.windriver.com (mail1.windriver.com [147.11.146.13]) by mail.openembedded.org (Postfix) with ESMTP id 114B0606D0 for ; Tue, 20 Aug 2019 13:46:55 +0000 (UTC) Received: from ALA-HCA.corp.ad.wrs.com ([147.11.189.40]) by mail1.windriver.com (8.15.2/8.15.1) with ESMTPS id x7KDktfv001278 (version=TLSv1 cipher=AES128-SHA bits=128 verify=FAIL); Tue, 20 Aug 2019 06:46:55 -0700 (PDT) Received: from soho-mhatle-m.local (172.25.36.226) by ALA-HCA.corp.ad.wrs.com (147.11.189.50) with Microsoft SMTP Server id 14.3.468.0; Tue, 20 Aug 2019 06:46:54 -0700 To: , Alexander Kanavin , Hongxu Jia References: <1566221602-123706-1-git-send-email-hongxu.jia@windriver.com> <28dbc362015c3cbae5b8550e8636e74802afbfc3.camel@linuxfoundation.org> From: Mark Hatle Openpgp: preference=signencrypt Autocrypt: addr=mark.hatle@windriver.com; prefer-encrypt=mutual; keydata= mQENBFYKxFgBCACt/pzutBp6p/xVKTFJjHbM3KpQKCblyot/YP+bpTr51Hrc5xDXBQhoG7TC aIRvRIvbhEevEQK9y04gW3JK/5lobq5ORebolcsHlYBUvpNeIPjupLQwGvz/TPtrLRNGLqDC rvsM6OA2XbQ2bwzxWaSQS3ImE2O2iXOZn9HhThMGeDB4Nff3fgUvXOTDIrgWOn9K2DgLL7Yc zkUIlFdj+Nraksd/7BSk8oH6tjeBVhFqSFvKta9QxWgdr58oPaTYaW/xNqUjlLrbJuMw/MSe xzuYfdfDfm6J8kRjMOnwQ0n8svJElzqAk+d83ow38gpGQ+LkjGgnf8ZFJ4rUJFADroX3ABEB AAG0JU1hcmsgSGF0bGUgPG1hcmsuaGF0bGVAd2luZHJpdmVyLmNvbT6JATcEEwEIACEFAlYK xFgCGwMFCwkIBwIGFQgJCgsCBBYCAwECHgECF4AACgkQfv796/r0vvlvZAf9Gs+eN320yhRW V/fZCsngKhmOK4v3HrTwFrkSmoD9QHQiE/5IPdNacHwIPwZx07tNBohB8xOeNqCPRYRBwGhA AnxKOPyd0nnm6ZhPzbA57v4x3IGRQr4QzvcBTASJq91l3Ew4lpAslyx5w1DPPqRD7G8ycDKg peKyDwmdkvCunVisSAQI3XIMq2y230biTO98tDPEezg+lg+yTsz9ZT33F5KNuWrpf8VL5fG/ mt+kAv7wtsx/KTRbqhH3iFXF6eBSwMjAfTXFlkLfbM9riJGXrWEl9n2S2R3cDHNHug0lb8f4 whK370KEO4OwRKIYW/VUBmzk5XZUE9DTlDSV8ycsrrkBDQRWCsRYAQgAwK3FuHCE+HW3YWdH PUjeSn5p//xJ57u8g2rng8zm9zNjmYgpPv5UxozaD9i2jf4mlQLHGGOezhHae8K4Nj70oVcv 8AmwcrJa9i9WL1oy/9R3fHMWf/Ctt9VXTO0qlCuq6PDzaUfvsXR61aJIjTKNQTOjCLjY1vXm VSewUgARysmA8WrjTfwGBihMBxAX0+kIjx8nOlam0WvekMBXZ0AbS56oTLRxYao6DI3GeB/N oWPy/5DfuTKaSdM0Pf8al20x9RuNN5/HLMlyDH/k8bIa1xd9aAqW+Feiw5gC107V2E6ULyIy q6em2UrsmIRxrvpHqbNgQKqvTehJ+V/i4g/uOwARAQABiQEfBBgBCAAJBQJWCsRYAhsMAAoJ EH7+/ev69L755XAH/3ZcNhooqd9OBhFkvXm1iWZ8EoC7motWqVn2oEyxoonsg8AD9kFXiN+T dYp7dH99EZu9q4ptj56AXm4uHzOgywL/5/V2TY6twCGAjUGzDjAB5gzoi+JLIBlDiyOip0eL QswIhRk473xy3j8DA4oVamnSPWgyNJ+qsdt37YWDzoDFFvtDoRU7Eb+znfIMDKzlny0XU/8L cW1bNHJlpv/78GPdfP4tjysEd8MuA5jf5o5w4XqcwTqalffEJtQ/s3pbkstEi7qm5uPui5Kt gq6YYLSqcSNe0GWAF9/T+qwyo7burSTxUWCWtMmlXdAQLW9SynLhB3Jbch0nFAh0fCKi6yY= Organization: Wind River Systems Message-ID: <4cbf8a7b-f0b2-9a16-6a91-bead26ecef50@windriver.com> Date: Tue, 20 Aug 2019 08:46:53 -0500 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <28dbc362015c3cbae5b8550e8636e74802afbfc3.camel@linuxfoundation.org> Cc: OE-core Subject: Re: [PATCH] systemd: decreasing default RLIMIT_NOFILE on qemu bsp X-BeenThere: openembedded-core@lists.openembedded.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Patches and discussions about the oe-core layer List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Aug 2019 13:46:56 -0000 Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit On 8/19/19 9:55 AM, richard.purdie@linuxfoundation.org wrote: > On Mon, 2019-08-19 at 16:01 +0200, Alexander Kanavin wrote: >> Should the limit be simply raised? The 256M setup is crumbling on >> several fronts (runtime tests, modernisation of X, various non-x86 >> qemu targets). Adding per-image/target exceptions, custom non- >> upstreamable patches, or sticking to deprecated configurations isn't >> the right thing to do, I think. > > What kind of devices/uses are we meant to be targeting? > > I believe OE is suited to optimised used cases where constraints on > size and performance are quite likely and supported. > > This is *exactly* the kind of thing we should be exploring and > supporting. systemd is not designed for some of the systems we target. > Changing some of its configuration shouldn't be a surprise. > > Having NFS taking up half the available memory doesn't make sense, > particularly when the sysvinit limits have worked for us for years. I > therefore appreciate Hongxu figuring out what the difference was and I > believe we should change this to something more suited for our target > audience, unless someone can explain why this is a bad idea. > > Similarly, forcing everyone to full GL stacks under qemu simply is not > acceptable. For example I might have a single container type image > which I want to load/test under qemu. Forcing such usage to require > 512MB memory for what could be a headless system also isn't right and > will just frustrate users. Users need to be able to access headless or > 2D configurations of it. Looking at what my customers are doing, I completely agree. I look at the design criteria for my customer's devices and I'm seeing 256MB as -very- common. More happens, but it's rare still. (But I have some customers with GB of ram, but that is usually to support their application, but the base system!) (Note, I do have customers -with- graphics requirements [X11] that are in the 128/256 MB ram ranges. In most cases OpenGL is something they would like, but I don't believe it's a hard requirement for them.) I do still have many customers with 128 MB of ram requirements. So it's important for us to set a reasonable baseline (256MB). So going under this requires 'work', but I think that is acceptable. --Mark > I'm sorry I haven't been as active with general patch review recently > as I'd like. I did say that trying to change runqueue would distract me > from the usual day to day running of the project. We need to sort this > problem out but not the way you keep trying to. > > Where images have specific memory needs, we should increase the > headroom for those images. Images with SDK tools, or stap make sense to > have more memory. > > I'd even possibly accept a case for higher memory defaults for graphics > images when GL is enabled. Pushing the default qemu memory size to > 512MB everywhere is wrong though and sends out the wrong message for > the project. > > Cheers, > > Richard > >