From: Andreas Schwab <schwab@suse.de>
To: Minchan Kim <minchan@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, mbrugger@suse.de,
linux-mm@kvack.org, Jason Evans <je@fb.com>
Subject: Re: jemalloc testsuite stalls in memset
Date: Thu, 15 Dec 2016 10:24:47 +0100 [thread overview]
Message-ID: <mvm4m2535pc.fsf@hawking.suse.de> (raw)
In-Reply-To: <20161214235031.GA2912@bbox> (Minchan Kim's message of "Thu, 15 Dec 2016 08:50:31 +0900")
On Dez 15 2016, Minchan Kim <minchan@kernel.org> wrote:
> You mean program itself access the address(ie, 0xffffb7400000) is hang
> while access the address from the debugger is OK?
Yes.
> Can you reproduce it easily?
100%
> Did you test it in real machine or qemu on x86?
Both real and kvm.
> Could you show me how I can reproduce it?
Just run make check.
> I want to test it in x86 machine, first of all.
> Unfortunately, I don't have any aarch64 platform now so maybe I have to
> run it on qemu on x86 until I can set up aarch64 platform if it is reproducible
> on real machine only.
>
>>
>> The kernel has been configured with transparent hugepages.
>>
>> CONFIG_TRANSPARENT_HUGEPAGE=y
>> CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
>> # CONFIG_TRANSPARENT_HUGEPAGE_MADVISE is not set
>> CONFIG_TRANSPARENT_HUGE_PAGECACHE=y
>
> What's the exact kernel version?
Anything >= your commit.
> I don't think it's HUGE_PAGECACHE problem but to narrow down the scope,
> could you test it without CONFIG_TRANSPARENT_HUGE_PAGECACHE?
That cannot be deselected.
Andreas.
--
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next prev parent reply other threads:[~2016-12-15 9:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mvmmvfy37g1.fsf@hawking.suse.de>
2016-12-14 23:50 ` Minchan Kim
2016-12-15 9:24 ` Andreas Schwab [this message]
2016-12-16 6:39 ` Minchan Kim
2016-12-16 14:16 ` Andreas Schwab
2016-12-21 23:54 ` Minchan Kim
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