From: Rik van Riel <riel@redhat.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: David Rientjes <rientjes@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mel@csn.ul.ie>,
stable@kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, Frans Pop <elendil@planet.nl>,
Jiri Kosina <jkosina@suse.cz>,
Sven Geggus <lists@fuchsschwanzdomain.de>,
Karol Lewandowski <karol.k.lewandowski@gmail.com>,
Tobias Oetiker <tobi@oetiker.ch>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Pekka Enberg <penberg@cs.helsinki.fi>,
Christoph Lameter <cl@linux-foundation.org>,
Stephan von Krawczynski <skraw@ithnet.com>,
kernel-testers@vger.kernel.org
Subject: Re: [PATCH 2/3] page allocator: Do not allow interrupts to use ALLOC_HARDER
Date: Sat, 31 Oct 2009 18:55:07 -0400 [thread overview]
Message-ID: <4AECC04B.9060808@redhat.com> (raw)
In-Reply-To: <20091031222905.GA32720@elf.ucw.cz>
On 10/31/2009 06:29 PM, Pavel Machek wrote:
> Well, you are trying to make rt heuristic more precise.
No he's not. He is trying to make it only apply to real time
tasks, not to interrupts that happen to interrupt the realtime
tasks.
> I believe it would be better to simply remove it.
You are against trying to give the realtime tasks a best effort
advantage at memory allocation?
Realtime apps often *have* to allocate memory on the kernel side,
because they use network system calls, etc...
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next prev parent reply other threads:[~2009-10-31 22:55 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-27 13:40 [PATCH 0/3] Reduce GFP_ATOMIC allocation failures, partial fix V3 Mel Gorman
2009-10-27 13:40 ` [PATCH 2/3] page allocator: Do not allow interrupts to use ALLOC_HARDER Mel Gorman
[not found] ` <1256650833-15516-3-git-send-email-mel-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-10-27 20:09 ` Andrew Morton
[not found] ` <20091027130924.fa903f5a.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2009-10-27 21:12 ` David Rientjes
[not found] ` <alpine.DEB.2.00.0910271411530.9183-X6Q0R45D7oAcqpCFd4KODRPsWskHk0ljAL8bYrjMMd8@public.gmane.org>
2009-10-31 18:40 ` Pavel Machek
2009-10-31 19:51 ` David Rientjes
2009-10-31 20:11 ` Pavel Machek
[not found] ` <20091031201158.GB29536-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2009-10-31 21:19 ` David Rientjes
2009-10-31 22:29 ` Pavel Machek
2009-10-31 22:55 ` Rik van Riel [this message]
[not found] ` <4AECC04B.9060808-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-11-01 7:35 ` Pavel Machek
[not found] ` <20091101073527.GB32720-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2009-11-01 12:37 ` KOSAKI Motohiro
2009-11-01 14:44 ` Rik van Riel
[not found] ` <4AED9EB4.5080601-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-11-01 19:32 ` Pavel Machek
2009-11-02 16:38 ` Christoph Lameter
2009-10-31 23:59 ` Rik van Riel
2009-11-02 16:42 ` Christoph Lameter
2009-11-02 20:53 ` David Rientjes
2009-11-03 17:10 ` Christoph Lameter
2009-11-04 1:46 ` David Rientjes
[not found] ` <alpine.DEB.2.00.0911031739380.1187-X6Q0R45D7oAcqpCFd4KODRPsWskHk0ljAL8bYrjMMd8@public.gmane.org>
2009-11-04 9:01 ` Pavel Machek
[not found] ` <20091104090140.GA14694-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2009-11-09 10:11 ` Mel Gorman
2009-10-27 13:40 ` [PATCH 3/3] vmscan: Force kswapd to take notice faster when high-order watermarks are being hit Mel Gorman
[not found] ` <1256650833-15516-4-git-send-email-mel-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-10-27 18:18 ` Rik van Riel
2009-10-27 20:19 ` Andrew Morton
[not found] ` <20091027131905.410ec04a.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2009-10-28 3:54 ` KOSAKI Motohiro
2009-10-28 10:29 ` Mel Gorman
2009-10-28 19:47 ` Andrew Morton
[not found] ` <20091028124756.7af44b6b.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2009-11-02 16:05 ` Mel Gorman
2009-11-02 17:32 ` Frans Pop
[not found] ` <200911021832.59035.elendil-EIBgga6/0yRmR6Xm/wNWPw@public.gmane.org>
2009-11-02 17:38 ` Mel Gorman
2009-11-02 20:36 ` Mel Gorman
2009-11-03 22:01 ` Frans Pop
[not found] ` <200911032301.59662.elendil-EIBgga6/0yRmR6Xm/wNWPw@public.gmane.org>
2009-11-03 22:08 ` Mel Gorman
2009-11-04 0:01 ` Frans Pop
2009-11-04 1:18 ` Mel Gorman
[not found] ` <20091104011811.GG22046-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-04 2:05 ` Frans Pop
2009-11-04 2:08 ` Frans Pop
[not found] ` <200911040305.59352.elendil-EIBgga6/0yRmR6Xm/wNWPw@public.gmane.org>
2009-11-04 15:48 ` Mel Gorman
[not found] ` <20091104154853.GM22046-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-04 20:57 ` Frans Pop
[not found] ` <200911042157.25020.elendil-EIBgga6/0yRmR6Xm/wNWPw@public.gmane.org>
2009-11-05 16:48 ` [PATCH 3/3] vmscan: Force kswapd to take notice faster when high-order watermarks are being hit (data on latencies available) Mel Gorman
[not found] ` <20091105164832.GB25926-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-11-12 11:36 ` Frans Pop
2009-11-04 2:08 ` [PATCH 3/3] vmscan: Force kswapd to take notice faster when high-order watermarks are being hit Mel Gorman
[not found] ` <1256650833-15516-1-git-send-email-mel-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>
2009-10-27 13:40 ` [PATCH 1/3] page allocator: Always wake kswapd when restarting an allocation attempt after direct reclaim failed Mel Gorman
2009-10-28 13:02 ` [PATCH 0/3] Reduce GFP_ATOMIC allocation failures, partial fix V3 Karol Lewandowski
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