From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id 96B77E00CAD; Tue, 6 Oct 2015 18:38:33 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,HTML_MESSAGE, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, * medium trust * [216.31.210.62 listed in list.dnswl.org] * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * 0.0 HTML_MESSAGE BODY: HTML included in message X-Greylist: delayed 64 seconds by postgrey-1.32 at yocto-www; Tue, 06 Oct 2015 18:38:32 PDT Received: from mail-gw1-out.broadcom.com (mail-gw1-out.broadcom.com [216.31.210.62]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 7132DE009BE for ; Tue, 6 Oct 2015 18:38:32 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.17,646,1437462000"; d="scan'208,217";a="77036060" Received: from irvexchcas05.broadcom.com (HELO IRVEXCHCAS05.corp.ad.broadcom.com) ([10.9.208.26]) by mail-gw1-out.broadcom.com with ESMTP; 06 Oct 2015 20:26:46 -0700 Received: from IRVEXCHMB14.corp.ad.broadcom.com ([fe80::6184:5cb6:5350:4823]) by IRVEXCHCAS05.corp.ad.broadcom.com ([::1]) with mapi id 14.03.0235.001; Tue, 6 Oct 2015 18:37:26 -0700 From: "Luke (Lucas) Starrett" To: "yocto@yoctoproject.org" Thread-Topic: [yocto] tmp on NFS Thread-Index: AdEAoI6A3s7vjL/fTxGsJnz4QZJETA== Date: Wed, 7 Oct 2015 01:37:26 +0000 Message-ID: Accept-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.9.208.64] MIME-Version: 1.0 Subject: tmp on NFS X-BeenThere: yocto@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Discussion of all things Yocto Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Oct 2015 01:38:33 -0000 Content-Language: en-US Content-Type: multipart/alternative; boundary="_000_DB59870584238C45879465F0A2E5C3F17E16BBIRVEXCHMB14corpad_" --_000_DB59870584238C45879465F0A2E5C3F17E16BBIRVEXCHMB14corpad_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi, Can anybody give a brief history of time on why using an NFS drive for tmp = is necessarily a bad thing, and why we have a sanity check for it? We're d= oing this without any obvious side effects. I'm aware of the checks added by changes like this: patchwork.openembedded.org/patch/61107/ However, I don't see the reasoning/background documented as to exactly what= is actually broken when putting tmp on NFS. Is it time skew, problems wit= h concurrent file access, something else? Thanks, Luke --_000_DB59870584238C45879465F0A2E5C3F17E16BBIRVEXCHMB14corpad_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi,

 

Can anybody give a brief history of time on why usin= g an NFS drive for tmp is necessarily a bad thing, and why we have a sanity= check for it?  We’re doing this without any obvious side effect= s.

 

I’m aware of the checks added by changes like = this:

 

patchwork.openembedded.or= g/patch/61107/

 

However, I don’t see the reasoning/background = documented as to exactly what is actually broken when putting tmp on NFS.&n= bsp; Is it time skew, problems with concurrent file access, something else?=

 

Thanks,

 

Luke

 

--_000_DB59870584238C45879465F0A2E5C3F17E16BBIRVEXCHMB14corpad_-- From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id B30A7E00F32; Wed, 7 Oct 2015 05:28:11 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low * trust * [95.211.2.226 listed in list.dnswl.org] * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] X-Greylist: delayed 19550 seconds by postgrey-1.32 at yocto-www; Wed, 07 Oct 2015 05:28:08 PDT Received: from mx6-14.smtp.antispamcloud.com (mx6-14.smtp.antispamcloud.com [95.211.2.226]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id AC9B8E00B6F for ; Wed, 7 Oct 2015 05:28:08 -0700 (PDT) Received: from 100-208.ftth.onsbrabantnet.nl ([88.159.208.100] helo=TOP-EX01.TOPIC.LOCAL) by mx6.antispamcloud.com with esmtps (TLSv1:AES128-SHA:128) (Exim 4.85) (envelope-from ) id 1Zjijq-0005dp-HS for yocto@yoctoproject.org; Wed, 07 Oct 2015 09:02:16 +0200 Received: from [192.168.80.121] (192.168.80.121) by TOP-EX01.TOPIC.LOCAL (192.168.10.102) with Microsoft SMTP Server (TLS) id 14.3.224.2; Wed, 7 Oct 2015 09:00:31 +0200 To: References: From: Mike Looijmans Organization: TOPIC Message-ID: <5614C341.2090104@topic.nl> Date: Wed, 7 Oct 2015 09:01:21 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: X-Originating-IP: [192.168.80.121] X-EXCLAIMER-MD-CONFIG: 9833cda7-5b21-4d34-9a38-8d025ddc3664 X-EXCLAIMER-MD-BIFURCATION-INSTANCE: 0 X-Filter-ID: s0sct1PQhAABKnZB5plbIbbvfIHzQjPVmPLZeVYSu3xU9luQrU+8/8qthi+0Jd/W6KAUC/fjyuDn NXFr4uarw8AABa0l71MJhTGCVSA9t5V02KbWfB+BvCLafvmmGbn9dUv6vb7lzwh4VvH3mLi3t0di 2A4r9us+Fq8MBvFDhJgZTSkrk1vENBCFqpj7Mq3eVx+pICt/gViUP6xZbFTtUGbjO41FyBEqIaDu dcVplPEV5fdZbBgAYjRktFsnBOu68dy9p6gE/g99Plm2mIQhBQ00JYCpdDQoJU79BjIi5W2Z3JKV mi72ocgY5kMQSjs70ALn042Wb7mIcbVJi7pqphHamFlRvlxL+MzCKMvMkk78ZQ0AiyqMiTY+IYva kPBr0z6bhalFEM/pjPCQA+BAlkniC5++pOyFfhmFBNq2PYR7Zn6OGQcTLcl+10S2CCSFSbZLiIzq 6RHISf0BeR/9lxlAbFwXFyuSr4goiWKeWbtWBb39uS1TjWG2Inx+Ts2Q85bpu8v0MLjfVaUXUvFy TEwEAmRywCEMPg5NNGTMxTzARyhSs4e+Ytun4y6JKMrt8M2oUrr42YKjVVGTpbenSXSOjCd5tjJG tAG9qTyK2srKWI8N0qcImQqSeb6nSlZ9mG5re5knRAISeKQWbUCrROjb5NA413zESMJef949r2h3 KLwbXHjHpxz8VOWtxaqRRTlHFazPXt/x3tAgKOX3Wg== X-Report-Abuse-To: spam@mx99.antispamcloud.com X-Filter-Fingerprint: IFrWXGses7OKB5S5G8/dJXhXyDRoOQM5J3kcUr0HrMvJUWjZ8+qhjyB23tbDuyLOYL8Ff78gYsez 4Rl08xudmXi4esCQ0R1MchVjt7wblGlvhFgW0MjUMRkF5sMCDfftTXNFDzN17hnrWeZYOJvLq0Ic WjZ+XcEjj/7Pkld0zkmvziDInX9WdMov2kn2yXjdwv61T+KDYyYtREgszdyFwv8IxCB3p/oCKvxr eyISh3JGb7OS5oVgiO+kDxZrVPLz3MmEGC2PrUKqLq5WmHK+Nw== X-Originating-IP: 88.159.208.100 X-Spampanel-Domain: topic.nl X-Spampanel-Username: 88.159.208.100 Authentication-Results: antispamcloud.com; auth=pass smtp.auth=88.159.208.100@topic.nl X-Spampanel-Outgoing-Class: ham X-Spampanel-Outgoing-Evidence: Combined (0.00) X-Recommended-Action: accept Subject: Re: tmp on NFS X-BeenThere: yocto@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Discussion of all things Yocto Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Oct 2015 12:28:11 -0000 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: quoted-printable =EF=BB=BFI can think of various things that would go wrong with tmp on NFS.= One of the=20 most obvious example would be to try and change the network configuration=20 while running, and needing some temporary file to manage that.\ I think the expectation is that /tmp should be accessible at all times, and= =20 that it's local and (at least somewhat) volatile. I tend to mount /tmp/ in RAM on all systems. Even my desktop. Not having to= do=20 wait for a device IO queue when performing actions in /tmp/ can greatly=20 improve the responsiveness of the system. If your application's /tmp/ storage requirements are such that they don't f= it=20 in RAM, I don't think /tmp/ is the place where they should be stored. On 07-10-15 03:37, Luke (Lucas) Starrett wrote: > Hi, > > Can anybody give a brief history of time on why using an NFS drive for tm= p is > necessarily a bad thing, and why we have a sanity check for it? We=E2=80= =99re doing > this without any obvious side effects. > > I=E2=80=99m aware of the checks added by changes like this: > > patchwork.openembedded.org/patch/61107/ > > However, I don=E2=80=99t see the reasoning/background documented as to ex= actly what is > actually broken when putting tmp on NFS. Is it time skew, problems with > concurrent file access, something else? > > Thanks, > > Luke > > > Kind regards, Mike Looijmans System Expert TOPIC Embedded Products Eindhovenseweg 32-C, NL-5683 KH Best Postbus 440, NL-5680 AK Best Telefoon: +31 (0) 499 33 69 79 Telefax: +31 (0) 499 33 69 70 E-mail: mike.looijmans@topicproducts.com Website: www.topicproducts.com Please consider the environment before printing this e-mail From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id C555EE00DEA; Wed, 7 Oct 2015 05:59:12 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, * medium trust * [216.31.210.62 listed in list.dnswl.org] Received: from mail-gw1-out.broadcom.com (mail-gw1-out.broadcom.com [216.31.210.62]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 3673AE009B8 for ; Wed, 7 Oct 2015 05:59:09 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.17,649,1437462000"; d="scan'208";a="77071292" Received: from irvexchcas07.broadcom.com (HELO IRVEXCHCAS07.corp.ad.broadcom.com) ([10.9.208.55]) by mail-gw1-out.broadcom.com with ESMTP; 07 Oct 2015 07:48:39 -0700 Received: from IRVEXCHMB14.corp.ad.broadcom.com ([fe80::6184:5cb6:5350:4823]) by IRVEXCHCAS07.corp.ad.broadcom.com ([::1]) with mapi id 14.03.0235.001; Wed, 7 Oct 2015 05:59:05 -0700 From: "Luke (Lucas) Starrett" To: Mike Looijmans , "yocto@yoctoproject.org" Thread-Topic: [yocto] tmp on NFS Thread-Index: AdEAoI6A3s7vjL/fTxGsJnz4QZJETAAaBZ+AAAJEGXA= Date: Wed, 7 Oct 2015 12:59:04 +0000 Message-ID: References: <5614C341.2090104@topic.nl> In-Reply-To: <5614C341.2090104@topic.nl> Accept-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.9.208.64] MIME-Version: 1.0 Subject: Re: tmp on NFS X-BeenThere: yocto@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Discussion of all things Yocto Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Oct 2015 12:59:12 -0000 Content-Language: en-US Content-Type: text/plain; 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Wed, 7 Oct 2015 06:00:13 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,HTML_MESSAGE, RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low * trust * [209.85.192.43 listed in list.dnswl.org] * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * 0.0 HTML_MESSAGE BODY: HTML included in message Received: from mail-qg0-f43.google.com (mail-qg0-f43.google.com [209.85.192.43]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id A6214E00BDE for ; Wed, 7 Oct 2015 06:00:07 -0700 (PDT) Received: by qgx61 with SMTP id 61so14144989qgx.3 for ; Wed, 07 Oct 2015 06:00:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc:content-type; bh=+0oEbQjqTrjchLXvPqsvUbm1Ln9fn5pr/MysFwrH8Ys=; b=lxg2v+ARxz+wWysl3FPgEfVcFHCt34XZmRanBT57WrvFnQRRGn0xe3+jyoI+qk6Sa5 Hz2GT3CnMQnvGcfact7Jx6pqjXBIJr7jYgTWR1aTLO+U8BOKOt4s99QdzXMgByy9r3Wl JLwTdBXDoFKOuxBW7Sbd73iUVgfc7lTjoTibo9EbjbcrjPX4arfGxf4nDX+JxEcIFLDz +dc5/NPSLRfhE1qCTLp3Evd+FqNAzKdnsyQFwffsF0DwjX49tPJko7R9UvAw954TyPAP 4fUb2EpyKJ1MKxaYKPILOOKazymL6mkaSoGoSXWosr68BBBQlUc4QPtVAroQceQoybCi g59Q== X-Gm-Message-State: ALoCoQmAuyXnanRzRDodUlVhAMI8Dz2X8aLJoVFyqw7nR6XM19vI0NAr7qyfrfVdaomuZ8kadAko X-Received: by 10.140.44.11 with SMTP id f11mr1188658qga.80.1444222805197; Wed, 07 Oct 2015 06:00:05 -0700 (PDT) MIME-Version: 1.0 Received: by 10.140.94.86 with HTTP; Wed, 7 Oct 2015 05:59:45 -0700 (PDT) In-Reply-To: References: From: "Burton, Ross" Date: Wed, 7 Oct 2015 13:59:45 +0100 Message-ID: To: "Luke (Lucas) Starrett" Cc: "yocto@yoctoproject.org" Subject: Re: tmp on NFS X-BeenThere: yocto@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Discussion of all things Yocto Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Oct 2015 13:00:13 -0000 Content-Type: multipart/alternative; boundary=001a113b41bc47f502052183538a --001a113b41bc47f502052183538a Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 7 October 2015 at 02:37, Luke (Lucas) Starrett wrote: > I=E2=80=99m aware of the checks added by changes like this: > > > > patchwork.openembedded.org/patch/61107/ > > > > However, I don=E2=80=99t see the reasoning/background documented as to ex= actly > what is actually broken when putting tmp on NFS. Is it time skew, proble= ms > with concurrent file access, something else? > Follow the link in the patch to the referenced bug, and comment #8 by Mark Hatle explains the problems that Wind River were seeing in testing: https://bugzilla.yoctoproject.org/show_bug.cgi?id=3D5442#c8 (background: a lot of the sanity tests are from Wind River who appear to have a pathological need to break software: what happens if I do a build nested 20 directories deep, what happens if I've a space in the build directory name, and so on) Ross --001a113b41bc47f502052183538a Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

= On 7 October 2015 at 02:37, Luke (Lucas) Starrett <lstarret@broadcom.c= om> wrote:

I=E2=80= =99m aware of the checks added by changes like this:

=C2=A0

patchwork.openembedded= .org/patch/61107/

=C2=A0

However, I don=E2=80=99t see the reasoning/backgroun= d documented as to exactly what is actually broken when putting tmp on NFS.= =C2=A0 Is it time skew, problems with concurrent file access, something els= e?


Follow the link in the patch to the referenced= bug, and comment #8 by Mark Hatle explains the problems that Wind River we= re seeing in testing:

https://bugzilla.yoctoproject.org/show_bug.cgi?id=3D5442#c8

(background: a lot of the sanity tests are from Wind River who appear to h= ave a pathological need to break software: what happens if I do a build nes= ted 20 directories deep, what happens if I've a space in the build dire= ctory name, and so on)

Ross
--001a113b41bc47f502052183538a-- From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id A0033E00CFE; Wed, 7 Oct 2015 06:04:31 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,HTML_MESSAGE, RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low * trust * [209.85.220.173 listed in list.dnswl.org] * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * 0.0 HTML_MESSAGE BODY: HTML included in message Received: from mail-qk0-f173.google.com (mail-qk0-f173.google.com [209.85.220.173]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id C3AA3E0071C for ; Wed, 7 Oct 2015 06:04:29 -0700 (PDT) Received: by qkas79 with SMTP id s79so5282275qka.0 for ; Wed, 07 Oct 2015 06:04:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc:content-type; bh=9j6sirz1od3SPbWhIBPoCl3QzQ/UFY/dUc8jlaHhr7U=; b=SY6ipKHPavXTrG2WTm+hkxjN1m3QaARVgGx3y4neUKIiRQifrJWW7ebSe+EpoApnQh LWToOihJUVdU1ZhHoStx5M7lO5Bi3cPKauFIvVlSPTkEndshW50zVl/OnvLpNcYhVi6B qeETo/bv6H2sNUSRjt1nC2wG3v++Sf+e+2w+pbec7a1gwAgo8cn3TWK8lD+tDzfbLiwo lfmHd1e19en8QwuAsDPshOVHR3ph79JSQpVj9CidVWtoN7X6njpooxoeI3o8y+uI9+Z4 h+pHCXHgloAOz8udTMPn5Oq2qrF2Yom+KXBskqxM5U9ubkxcfSySd/kThm/t46PosUyH ZqBw== X-Gm-Message-State: ALoCoQnKxyJ3dbw3wUoiWPFV3HUaeh9UekfMOZJRjjMPGkS1mtjLliOHip/x3GDptPYVjQzu4Kkr X-Received: by 10.55.43.129 with SMTP id r1mr1238357qkr.104.1444223068675; Wed, 07 Oct 2015 06:04:28 -0700 (PDT) MIME-Version: 1.0 Received: by 10.140.94.86 with HTTP; Wed, 7 Oct 2015 06:04:09 -0700 (PDT) In-Reply-To: References: From: "Burton, Ross" Date: Wed, 7 Oct 2015 14:04:09 +0100 Message-ID: To: "Luke (Lucas) Starrett" Cc: "yocto@yoctoproject.org" Subject: Re: tmp on NFS X-BeenThere: yocto@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Discussion of all things Yocto Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Oct 2015 13:04:31 -0000 Content-Type: multipart/alternative; boundary=001a1147ba9efc5e2b05218362a4 --001a1147ba9efc5e2b05218362a4 Content-Type: text/plain; charset=UTF-8 On 7 October 2015 at 13:59, Burton, Ross wrote: > Follow the link in the patch to the referenced bug, and comment #8 by Mark > Hatle explains the problems that Wind River were seeing in testing: > I should also add that many people buy lots of RAM and do builds with build/tmp in a tmpfs as it gives you a noticeable performance increase, so I dread to think how much it will hurt to do a build with build/tmp on a network mount. Ross --001a1147ba9efc5e2b05218362a4 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

= On 7 October 2015 at 13:59, Burton, Ross <ross.burton@intel.com>= ; wrote:
Follow the link in the patch to the referenced bug, and comment #8 by Mar= k Hatle explains the problems that Wind River were seeing in testing:
=

I should also add t= hat many people buy lots of RAM and do builds with build/tmp in a tmpfs as = it gives you a noticeable performance increase, so I dread to think how muc= h it will hurt to do a build with build/tmp on a network mount.

Ross
--001a1147ba9efc5e2b05218362a4-- From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id 8C875E007A5; Wed, 7 Oct 2015 06:39:34 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low * trust * [46.165.232.184 listed in list.dnswl.org] * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] Received: from mx12-14.smtp.antispamcloud.com (mx12-14.smtp.antispamcloud.com [46.165.232.184]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 447C4E007A5 for ; Wed, 7 Oct 2015 06:39:27 -0700 (PDT) Received: from 100-208.ftth.onsbrabantnet.nl ([88.159.208.100] helo=TOP-EX01.TOPIC.LOCAL) by mx12.antispamcloud.com with esmtps (TLSv1:AES128-SHA:128) (Exim 4.85) (envelope-from ) id 1ZjowA-0007JJ-AK for yocto@yoctoproject.org; Wed, 07 Oct 2015 15:39:24 +0200 Received: from [192.168.80.121] (192.168.80.121) by TOP-EX01.TOPIC.LOCAL (192.168.10.102) with Microsoft SMTP Server (TLS) id 14.3.224.2; Wed, 7 Oct 2015 15:38:27 +0200 To: References: From: Mike Looijmans Organization: TOPIC Message-ID: <56152085.30203@topic.nl> Date: Wed, 7 Oct 2015 15:39:17 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: X-Originating-IP: [192.168.80.121] X-EXCLAIMER-MD-CONFIG: 9833cda7-5b21-4d34-9a38-8d025ddc3664 X-EXCLAIMER-MD-BIFURCATION-INSTANCE: 0 X-Filter-ID: s0sct1PQhAABKnZB5plbIbbvfIHzQjPVmPLZeVYSu3xU9luQrU+8/8qthi+0Jd/W6KAUC/fjyuDn NXFr4uarw8AABa0l71MJhTGCVSA9t5V02KbWfB+BvCLafvmmGbn9dUv6vb7lzwh4VvH3mLi3t0di 2A4r9us+Fq8MBvFDhJgZtdZugFCOMdVKbChWa+6FszGU6C3ak3gyMZOJ91WM6mbjO41FyBEqIaDu dcVplPEV5fdZbBgAYjRktFsnBOu68dy9p6gE/g99Plm2mIQhBQ00JYCpdDQoJU79BjIi5W2Z3JKV mi72ocgY5kMQSjs70ALn042Wb7mIcbVJi7pqphHamFlRvlxL+MzCKMvMkk78ZQ0AiyqMiTY+IYva kPBr0z6bhalFEM/pjPCQA+BAlkniC5++pOyFfhmFBNq2PYR7Zn6OGQcTLcl+10S2CCSFSbZLiIzq 6RHISf0BeR/9lxlAbFwXFyuSr4goiWKeWbtWBb39uS1TjWG2Inx+Ts2Q85bpu8v0MLjfVaUXUvFy TEwEAmRywCEMPg5NNGTMxTwq5H2HisnUiFGNBznFCJKEejk40iyx8hQPmbkJabHvUAAjMhPl4Vhd NvMNOfYY5VjTiEw2ui8TVPldBCj8jBAT9EIYxHyidUrHJfz9kNKga+jb5NA413zESMJef949r2h3 KLwbXHjHpxz8VOWtxaqRRTlHFazPXt/x3tAgKOX3Wg== X-Report-Abuse-To: spam@mx99.antispamcloud.com X-Filter-Fingerprint: IFrWXGses7OKB5S5G8/dJUb3OPwsHaH0Fvg5oXltHd/JUWjZ8+qhjyB23tbDuyLOYL8Ff78gYsez 4Rl08xudmXi4esCQ0R1MchVjt7wblGlvhFgW0MjUMRkF5sMCDfftTXNFDzN17hnrWeZYOJvLq0Ic WjZ+XcEjj/7Pkld0zkmvziDInX9WdMov2kn2yXjdwv61T+KDYyYtREgszdyFwv8IxCB3p/oCKvxr eyISh3JGb7OS5oVgiO+kDxZrVPLz3MmEGC2PrUKqLq5WmHK+Nw== X-Originating-IP: 88.159.208.100 X-Spampanel-Domain: topic.nl X-Spampanel-Username: 88.159.208.100 Authentication-Results: antispamcloud.com; auth=pass smtp.auth=88.159.208.100@topic.nl X-Spampanel-Outgoing-Class: ham X-Spampanel-Outgoing-Evidence: Combined (0.00) X-Recommended-Action: accept Subject: Re: tmp on NFS X-BeenThere: yocto@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Discussion of all things Yocto Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Oct 2015 13:39:34 -0000 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: quoted-printable =EF=BB=BFOn 07-10-15 15:04, Burton, Ross wrote: > > On 7 October 2015 at 13:59, Burton, Ross > wrote: > > Follow the link in the patch to the referenced bug, and comment #8 by= Mark > Hatle explains the problems that Wind River were seeing in testing: > > > I should also add that many people buy lots of RAM and do builds with > build/tmp in a tmpfs as it gives you a noticeable performance increase, s= o I > dread to think how much it will hurt to do a build with build/tmp on a ne= twork > mount. Telling Ubuntu to actually use all that RAM for some serious caching (e.g.= =20 allow 50% dirty pages, and extend the timeout to several minutes), and (if = you=20 have >14) putting cfq back into its rightful place as io scheduler made a h= uge=20 difference for me. Kind regards, Mike Looijmans System Expert TOPIC Embedded Products Eindhovenseweg 32-C, NL-5683 KH Best Postbus 440, NL-5680 AK Best Telefoon: +31 (0) 499 33 69 79 Telefax: +31 (0) 499 33 69 70 E-mail: mike.looijmans@topicproducts.com Website: www.topicproducts.com Please consider the environment before printing this e-mail