From: Pekka Enberg <penberg@cs.helsinki.fi>
To: Minchan Kim <minchan.kim@gmail.com>
Cc: Gleb Natapov <gleb@redhat.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
linux-mm@kvack.org, kosaki.motohiro@jp.fujitsu.com,
linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
akpm@linux-foundation.org, andrew.c.morrow@gmail.com,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Rik van Riel <riel@redhat.com>,
Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: [PATCH v6] add MAP_UNLOCKED mmap flag
Date: Tue, 19 Jan 2010 15:18:11 +0200 [thread overview]
Message-ID: <84144f021001190518x450868eax2edfa5e16ff6e4b@mail.gmail.com> (raw)
In-Reply-To: <1263905332.2163.11.camel@barrios-desktop>
On Tue, Jan 19, 2010 at 2:48 PM, Minchan Kim <minchan.kim@gmail.com> wrote:
> Gleb. How about using MADV_SEQUENTIAL on guest memory?
> It makes that pages of guest are moved into inactive reclaim list more
> fast. It means it is likely to swap out faster than other pages if it
> isn't hit during inactive list.
Yeah, something like that but we don't want the readahead. OTOH, it's
not clear what Gleb's real problem is. Are the guest address spaces
anonymous or file backed? Which parts of the emulator are swapped out
that are causing the problem? Maybe it's a VM balancing issue that
mlock papers over?
Pekka
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next prev parent reply other threads:[~2010-01-19 13:18 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-18 13:37 [PATCH v6] add MAP_UNLOCKED mmap flag Gleb Natapov
[not found] ` <20100118133755.GG30698-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-01-18 14:09 ` Pekka Enberg
2010-01-18 14:19 ` Gleb Natapov
2010-01-18 14:32 ` Alan Cox
2010-01-18 14:35 ` Gleb Natapov
2010-01-18 14:49 ` Peter Zijlstra
2010-01-18 15:01 ` Gleb Natapov
2010-01-18 15:06 ` Peter Zijlstra
2010-01-18 15:11 ` Avi Kivity
2010-01-18 15:14 ` Peter Zijlstra
2010-01-18 15:19 ` Avi Kivity
[not found] ` <4B547C09.8010906-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-01-18 15:24 ` Peter Zijlstra
2010-01-18 15:41 ` Alan Cox
2010-01-18 15:44 ` Peter Zijlstra
2010-01-18 17:11 ` Gleb Natapov
2010-01-18 15:14 ` Gleb Natapov
2010-01-19 0:12 ` KOSAKI Motohiro
2010-01-18 16:05 ` Pekka Enberg
2010-01-18 17:08 ` Gleb Natapov
2010-01-18 18:09 ` Pekka Enberg
2010-01-18 18:19 ` Gleb Natapov
2010-01-18 19:10 ` Alan Cox
2010-01-19 7:17 ` Gleb Natapov
2010-01-19 7:37 ` Pekka Enberg
2010-01-19 7:52 ` Gleb Natapov
[not found] ` <20100119075205.GI14345-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-01-19 8:07 ` Pekka Enberg
2010-01-19 8:26 ` Gleb Natapov
[not found] ` <20100119082638.GK14345-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-01-19 8:44 ` Pekka Enberg
2010-01-19 10:40 ` Gleb Natapov
[not found] ` <84144f021001190044s397c6665qb00af48235d2d818-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-19 12:48 ` Minchan Kim
2010-01-19 13:18 ` Pekka Enberg [this message]
2010-01-19 13:26 ` Gleb Natapov
2010-01-20 0:24 ` KOSAKI Motohiro
2010-01-19 11:54 ` Alan Cox
2010-01-19 12:07 ` Gleb Natapov
2010-01-19 13:21 ` Alan Cox
2010-01-19 14:07 ` Minchan Kim
2010-01-19 14:14 ` Gleb Natapov
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