From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ig0-f169.google.com (mail-ig0-f169.google.com [209.85.213.169]) by kanga.kvack.org (Postfix) with ESMTP id 9EEDC6B0005 for ; Sun, 6 Mar 2016 22:00:34 -0500 (EST) Received: by mail-ig0-f169.google.com with SMTP id ig19so9685667igb.1 for ; Sun, 06 Mar 2016 19:00:34 -0800 (PST) Received: from ozlabs.org (ozlabs.org. [103.22.144.67]) by mx.google.com with ESMTPS id u23si3293406ioi.14.2016.03.06.19.00.32 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 06 Mar 2016 19:00:33 -0800 (PST) Message-ID: <1457319627.19197.1.camel@ellerman.id.au> Subject: Re: Problems with swapping in v4.5-rc on POWER From: Michael Ellerman Date: Mon, 07 Mar 2016 14:00:27 +1100 In-Reply-To: References: <877fhttmr1.fsf@linux.vnet.ibm.com> <1456984266.28236.1.camel@ellerman.id.au> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Hugh Dickins Cc: "Aneesh Kumar K.V" , Paul Mackerras , linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org On Fri, 2016-03-04 at 09:58 -0800, Hugh Dickins wrote: > > The alternative bisection was as unsatisfactory as the first: > again it fingered an irrelevant merge (rather than any commit > pulled in by that merge) as the bad commit. > > It seems this issue is too intermittent for bisection to be useful, > on my load anyway. Darn. Thanks for trying. > The best I can do now is try v4.4 for a couple of days, to verify that > still comes out good (rather than the machine going bad coincident with > v4.5-rc), then try v4.5-rc7 to verify that that still comes out bad. Thanks, that would still be helpful. > I'll report back on those; but beyond that, I'll have to leave it to you. I haven't had any luck here :/ Can you give us a more verbose description of your test setup? - G5, which exact model? - 4k pages, no THP. - how much ram & swap? - building linus' tree, make -j ? - source and output on tmpfs? (how big?) - what device is the swap device? (you said SSD I think?) - anything else I've forgotten? Oh and can you send us your bisect logs, we can at least trust the bad results I think. cheers -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org