[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20190624093507.6m2quduiacuot3ne@willie-the-truck>
Date: Mon, 24 Jun 2019 10:35:07 +0100
From: Will Deacon <will@...nel.org>
To: Qian Cai <cai@....pw>
Cc: Anshuman Khandual <anshuman.khandual@....com>,
Will Deacon <will.deacon@....com>,
Catalin Marinas <catalin.marinas@....com>,
"linux-mm@...ck.org" <linux-mm@...ck.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
linux-arm-kernel@...ts.infradead.org
Subject: Re: LTP hugemmap05 test case failure on arm64 with linux-next
(next-20190613)
Hi Qian Cai,
On Sun, Jun 16, 2019 at 09:41:09PM -0400, Qian Cai wrote:
> > On Jun 16, 2019, at 9:32 PM, Anshuman Khandual <anshuman.khandual@....com> wrote:
> > On 06/14/2019 05:45 PM, Qian Cai wrote:
> >> On Fri, 2019-06-14 at 11:20 +0100, Will Deacon wrote:
> >>> On Thu, Jun 13, 2019 at 05:34:01PM -0400, Qian Cai wrote:
> >>>> LTP hugemmap05 test case [1] could not exit itself properly and then degrade
> >>>> the
> >>>> system performance on arm64 with linux-next (next-20190613). The bisection
> >>>> so
> >>>> far indicates,
> >>>>
> >>>> BAD: 30bafbc357f1 Merge remote-tracking branch 'arm64/for-next/core'
> >>>> GOOD: 0c3d124a3043 Merge remote-tracking branch 'arm64-fixes/for-next/fixes'
> >>>
> >>> Did you finish the bisection in the end? Also, what config are you using
> >>> (you usually have something fairly esoteric ;)?
> >>
> >> No, it is still running.
> >>
> >> https://raw.githubusercontent.com/cailca/linux-mm/master/arm64.config
> >>
> >
> > Were you able to bisect the problem till a particular commit ?
>
> Not yet, it turned out the test case needs to run a few times (usually
> within 5) to reproduce, so the previous bisection was totally wrong where
> it assume the bad commit will fail every time. Once reproduced, the test
> case becomes unkillable stuck in the D state.
>
> I am still in the middle of running a new round of bisection. The current
> progress is,
>
> 35c99ffa20ed GOOD (survived 20 times)
> def0fdae813d BAD
Just wondering if you got anywhere with this? We've failed to reproduce the
problem locally.
Will
Powered by blists - more mailing lists