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From: Andrea Arcangeli <aarcange@redhat.com>
To: werner <w.landgraf@ru.ru>
Cc: akpm@linux-foundation.org, hannes@cmpxchg.org,
	idryomov@gmail.com, rostedt@goodmis.org,
	linux-kernel@vger.kernel.org, torvalds@linux-foundation.org,
	Minchan Kim <minchan.kim@gmail.com>,
	Johannes Weiner <jweiner@redhat.com>
Subject: Re: 2.6.38-rc1 problems with khugepaged
Date: Fri, 21 Jan 2011 20:17:57 +0100	[thread overview]
Message-ID: <20110121191757.GO9506@random.random> (raw)
In-Reply-To: <web-444048714@zbackend1.aha.ru>

On Fri, Jan 21, 2011 at 06:43:44AM -0400, werner wrote:
> 2.6.38-rc1-git1 runs normally with khugepaged switched 
> OFF.  Thus, khugepaged  is the problem; as said if 
> switched it on, during boot the computer becomes very slow 
> and sticks almost.    wl

Sorry, looks like x86 32bit THP wasn't tested in all possible .config
(32bit support is upstream-only feature and because of lower userbase
it also got a lot less testing than 64bit support).

Does it make any difference if you both disable CONFIG_PARAVIRT and
enable HIGHMEM64?

For now keep THP off on 32bit, it should be trivial to reproduce so
fix will come soon.

Minchan info shows it's an 32bit arch bug so don't be too worried
about it because it can't affect 64bit builds and it's not common code
bug and we'll fix it ASAP.

Thanks,
Andrea

  reply	other threads:[~2011-01-21 19:18 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-21 10:43 werner
2011-01-21 19:17 ` Andrea Arcangeli [this message]
2011-01-21 21:14   ` Steven Rostedt
2011-01-22  2:12   ` [PATCH] thp: fix PARAVIRT x86 32bit noPAE Andrea Arcangeli
2011-01-22  3:18     ` Minchan Kim
  -- strict thread matches above, loose matches on Subject: below --
2011-01-21  8:36 2.6.38-rc1 problems with khugepaged werner
2011-01-19 13:45 werner
2011-01-19 15:59 ` Borislav Petkov
2011-01-19 19:55   ` Andrea Arcangeli
2011-01-19 21:45   ` Johannes Weiner
2011-01-20  0:01     ` Andrea Arcangeli
2011-01-20  1:10       ` Johannes Weiner
2011-01-20  1:21         ` Andrea Arcangeli
2011-01-19 22:21   ` Andrea Arcangeli
2011-01-20 20:13     ` Steven Rostedt

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