From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: "Martin J. Bligh" <mbligh@mbligh.org>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
Joel Schopp <jschopp@austin.ibm.com>, Mel Gorman <mel@csn.ul.ie>,
Andrew Morton <akpm@osdl.org>,
kravetz@us.ibm.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, lhms-devel@lists.sourceforge.net,
Ingo Molnar <mingo@elte.hu>
Subject: Re: [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19
Date: Wed, 02 Nov 2005 15:23:31 +0900 [thread overview]
Message-ID: <43685B63.7020701@jp.fujitsu.com> (raw)
In-Reply-To: <231260000.1130908490@[10.10.2.4]>
Martin J. Bligh wrote:
>>True, but we don't seem to have huge problems with other things. The
>>main ones that have come up on lkml are e1000 which is getting fixed,
>>and maybe XFS which I think there are also moves to improve.
>
>
> It should be fairly easy to trawl through the list of all allocations
> and pull out all the higher order ones from the whole source tree. I
> suspect there's a lot ... maybe I'll play with it later on.
>
please check kmalloc(32k,64k)
For example, loopback device's default MTU=16436 means order=3 and
maybe there are other high MTU device.
I suspect skb_makewritable()/skb_copy()/skb_linearize() function can be
sufferd from fragmentation when MTU is big. They allocs large skb by
gathering fragmented skbs.When these skb_* funcs failed, the packet
is silently discarded by netfilter. If fragmentation is heavy, packets
(especialy TCP) uses large MTU never reachs its end, even if loopback.
Honestly, I'm not familiar with network code, could anyone comment this ?
-- Kame
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next prev parent reply other threads:[~2005-11-02 6:23 UTC|newest]
Thread overview: 253+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-30 18:33 Mel Gorman
2005-10-30 18:34 ` [PATCH 1/7] Fragmentation Avoidance V19: 001_antidefrag_flags Mel Gorman
2005-10-30 18:34 ` [PATCH 2/7] Fragmentation Avoidance V19: 002_usemap Mel Gorman
2005-10-30 18:34 ` [PATCH 3/7] Fragmentation Avoidance V19: 003_fragcore Mel Gorman
2005-10-30 18:34 ` [PATCH 4/7] Fragmentation Avoidance V19: 004_fallback Mel Gorman
2005-10-30 18:34 ` [PATCH 5/7] Fragmentation Avoidance V19: 005_largealloc_tryharder Mel Gorman
2005-10-30 18:34 ` [PATCH 6/7] Fragmentation Avoidance V19: 006_percpu Mel Gorman
2005-10-30 18:34 ` [PATCH 7/7] Fragmentation Avoidance V19: 007_stats Mel Gorman
2005-10-31 5:57 ` [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19 Mike Kravetz
2005-10-31 6:37 ` Nick Piggin
2005-10-31 7:54 ` Andrew Morton
2005-10-31 7:11 ` Nick Piggin
2005-10-31 16:19 ` Mel Gorman
2005-10-31 23:54 ` Nick Piggin
2005-11-01 1:28 ` Mel Gorman
2005-11-01 1:42 ` Nick Piggin
2005-10-31 14:34 ` Martin J. Bligh
2005-10-31 19:24 ` Andrew Morton
2005-10-31 19:40 ` Martin J. Bligh
2005-10-31 23:59 ` Nick Piggin
2005-11-01 1:36 ` Mel Gorman
2005-10-31 23:29 ` Nick Piggin
2005-11-01 0:59 ` Mel Gorman
2005-11-01 1:31 ` Nick Piggin
2005-11-01 2:07 ` Mel Gorman
2005-11-01 2:35 ` Nick Piggin
2005-11-01 11:57 ` Mel Gorman
2005-11-01 13:56 ` Ingo Molnar
2005-11-01 14:10 ` Dave Hansen
2005-11-01 14:29 ` Ingo Molnar
2005-11-01 14:49 ` Dave Hansen
2005-11-01 15:01 ` Ingo Molnar
2005-11-01 15:22 ` Dave Hansen
2005-11-02 8:49 ` Ingo Molnar
2005-11-02 9:02 ` Nick Piggin
2005-11-02 9:17 ` Ingo Molnar
2005-11-02 9:32 ` Dave Hansen
2005-11-02 9:48 ` Nick Piggin
2005-11-02 10:54 ` Dave Hansen
2005-11-02 15:02 ` Martin J. Bligh
2005-11-03 3:21 ` Nick Piggin
2005-11-03 15:36 ` Martin J. Bligh
2005-11-03 15:40 ` Arjan van de Ven
2005-11-03 15:51 ` Linus Torvalds
2005-11-03 15:57 ` Martin J. Bligh
2005-11-03 16:20 ` Arjan van de Ven
2005-11-03 16:27 ` Mel Gorman
2005-11-03 16:46 ` Linus Torvalds
2005-11-03 16:52 ` Martin J. Bligh
2005-11-03 17:19 ` Linus Torvalds
2005-11-03 17:48 ` Dave Hansen
2005-11-03 17:51 ` Martin J. Bligh
2005-11-03 17:59 ` Arjan van de Ven
2005-11-03 18:08 ` Linus Torvalds
2005-11-03 18:17 ` Martin J. Bligh
2005-11-03 18:44 ` Linus Torvalds
2005-11-03 18:51 ` Martin J. Bligh
2005-11-03 19:35 ` Linus Torvalds
2005-11-03 22:40 ` Martin J. Bligh
2005-11-03 22:56 ` Linus Torvalds
2005-11-03 23:01 ` Martin J. Bligh
2005-11-04 0:58 ` Nick Piggin
2005-11-04 1:06 ` Linus Torvalds
2005-11-04 1:20 ` Paul Mackerras
2005-11-04 1:22 ` Nick Piggin
2005-11-04 1:48 ` Mel Gorman
2005-11-04 1:59 ` Nick Piggin
2005-11-04 2:35 ` Mel Gorman
2005-11-04 1:26 ` Mel Gorman
2005-11-03 21:11 ` Mel Gorman
2005-11-03 18:03 ` Linus Torvalds
2005-11-03 20:00 ` Paul Jackson
2005-11-03 20:46 ` Mel Gorman
2005-11-03 18:48 ` Martin J. Bligh
2005-11-03 19:08 ` Linus Torvalds
2005-11-03 22:37 ` Martin J. Bligh
2005-11-03 23:16 ` Linus Torvalds
2005-11-03 23:39 ` Martin J. Bligh
2005-11-04 0:42 ` Nick Piggin
2005-11-04 4:39 ` Andrew Morton
2005-11-04 16:22 ` Mel Gorman
2005-11-03 15:53 ` Martin J. Bligh
2005-11-02 14:57 ` Martin J. Bligh
2005-11-01 16:48 ` Kamezawa Hiroyuki
2005-11-01 16:59 ` Kamezawa Hiroyuki
2005-11-01 17:19 ` Mel Gorman
2005-11-02 0:32 ` KAMEZAWA Hiroyuki
2005-11-02 11:22 ` Mel Gorman
2005-11-01 18:06 ` linux-os (Dick Johnson)
2005-11-02 7:19 ` Ingo Molnar
2005-11-02 7:46 ` Gerrit Huizenga
2005-11-02 8:50 ` Nick Piggin
2005-11-02 9:12 ` Gerrit Huizenga
2005-11-02 9:37 ` Nick Piggin
2005-11-02 10:17 ` Gerrit Huizenga
2005-11-02 23:47 ` Rob Landley
2005-11-03 4:43 ` Nick Piggin
2005-11-03 6:07 ` Rob Landley
2005-11-03 7:34 ` Nick Piggin
2005-11-03 17:54 ` Rob Landley
2005-11-03 20:13 ` Jeff Dike
2005-11-03 16:35 ` Jeff Dike
2005-11-03 16:23 ` Badari Pulavarty
2005-11-03 18:27 ` Jeff Dike
2005-11-03 18:49 ` Rob Landley
2005-11-04 4:52 ` Andrew Morton
2005-11-04 5:35 ` Paul Jackson
2005-11-04 5:48 ` Andrew Morton
2005-11-04 6:42 ` Paul Jackson
2005-11-04 7:10 ` Andrew Morton
2005-11-04 7:45 ` Paul Jackson
2005-11-04 8:02 ` Andrew Morton
2005-11-04 9:52 ` Paul Jackson
2005-11-04 15:27 ` Martin J. Bligh
2005-11-04 15:19 ` Martin J. Bligh
2005-11-04 17:38 ` Andrew Morton
2005-11-04 6:16 ` Bron Nelson
2005-11-04 7:26 ` [patch] swapin rlimit Ingo Molnar
2005-11-04 7:36 ` Andrew Morton
2005-11-04 8:07 ` Ingo Molnar
2005-11-04 10:06 ` Paul Jackson
2005-11-04 15:24 ` Martin J. Bligh
2005-11-04 8:18 ` Arjan van de Ven
2005-11-04 10:04 ` Paul Jackson
2005-11-04 15:14 ` Rob Landley
2005-11-04 10:14 ` Bernd Petrovitsch
2005-11-04 10:21 ` Ingo Molnar
2005-11-04 11:17 ` Bernd Petrovitsch
2005-11-02 10:41 ` [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19 Ingo Molnar
2005-11-02 11:04 ` Gerrit Huizenga
2005-11-02 12:00 ` Ingo Molnar
2005-11-02 12:42 ` Dave Hansen
2005-11-02 15:02 ` Gerrit Huizenga
2005-11-03 0:10 ` Rob Landley
2005-11-02 7:57 ` Nick Piggin
2005-11-02 0:51 ` Nick Piggin
2005-11-02 7:42 ` Dave Hansen
2005-11-02 8:24 ` Nick Piggin
2005-11-02 8:33 ` Yasunori Goto
2005-11-02 8:43 ` Nick Piggin
2005-11-02 14:51 ` Martin J. Bligh
2005-11-02 23:28 ` Rob Landley
2005-11-03 5:26 ` Jeff Dike
2005-11-03 5:41 ` Rob Landley
2005-11-04 3:26 ` [uml-devel] " Blaisorblade
2005-11-04 15:50 ` Rob Landley
2005-11-04 17:18 ` Blaisorblade
2005-11-04 17:44 ` Rob Landley
2005-11-02 12:38 ` [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19 - Summary Mel Gorman
2005-11-03 3:14 ` Nick Piggin
2005-11-03 12:19 ` Mel Gorman
2005-11-10 18:47 ` Steve Lord
2005-11-03 15:34 ` Martin J. Bligh
2005-11-01 14:41 ` [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19 Mel Gorman
2005-11-01 14:46 ` Ingo Molnar
2005-11-01 15:23 ` Mel Gorman
2005-11-01 18:33 ` Rob Landley
2005-11-01 19:02 ` Ingo Molnar
2005-11-01 14:50 ` Dave Hansen
2005-11-01 15:24 ` Mel Gorman
2005-11-02 5:11 ` Andrew Morton
2005-11-01 18:23 ` Rob Landley
2005-11-01 20:31 ` Joel Schopp
2005-11-01 20:59 ` Joel Schopp
2005-11-02 1:06 ` Nick Piggin
2005-11-02 1:41 ` Martin J. Bligh
2005-11-02 2:03 ` Nick Piggin
2005-11-02 2:24 ` Martin J. Bligh
2005-11-02 2:49 ` Nick Piggin
2005-11-02 4:39 ` Martin J. Bligh
2005-11-02 5:09 ` Nick Piggin
2005-11-02 5:14 ` Martin J. Bligh
2005-11-02 6:23 ` KAMEZAWA Hiroyuki [this message]
2005-11-02 10:15 ` Nick Piggin
2005-11-02 7:19 ` Yasunori Goto
2005-11-02 11:48 ` Mel Gorman
2005-11-02 11:41 ` Mel Gorman
2005-11-02 11:37 ` Mel Gorman
2005-11-02 15:11 ` Mel Gorman
2005-11-01 15:25 ` Martin J. Bligh
2005-11-01 15:33 ` Dave Hansen
2005-11-01 16:57 ` Mel Gorman
2005-11-01 17:00 ` Mel Gorman
2005-11-01 18:58 ` Rob Landley
2005-11-01 14:40 ` Avi Kivity
2005-11-04 1:00 Andy Nelson
2005-11-04 1:16 ` Martin J. Bligh
2005-11-04 1:27 ` Nick Piggin
2005-11-04 5:14 ` Linus Torvalds
2005-11-04 6:10 ` Paul Jackson
2005-11-04 6:38 ` Ingo Molnar
2005-11-04 7:26 ` Paul Jackson
2005-11-04 7:37 ` Ingo Molnar
2005-11-04 15:31 ` Linus Torvalds
2005-11-04 15:39 ` Martin J. Bligh
2005-11-04 15:53 ` Ingo Molnar
2005-11-06 7:34 ` Paul Jackson
2005-11-06 15:55 ` Linus Torvalds
2005-11-06 18:18 ` Paul Jackson
2005-11-06 8:44 ` Kyle Moffett
2005-11-06 16:12 ` Linus Torvalds
2005-11-06 17:00 ` Linus Torvalds
2005-11-07 8:00 ` Ingo Molnar
2005-11-07 11:00 ` Dave Hansen
2005-11-07 12:20 ` Ingo Molnar
2005-11-07 19:34 ` Steven Rostedt
2005-11-07 23:38 ` Joel Schopp
2005-11-04 7:44 ` Eric Dumazet
2005-11-07 16:42 ` Adam Litke
2005-11-04 14:56 ` Andy Nelson
2005-11-04 15:18 ` Ingo Molnar
2005-11-04 15:39 ` Andy Nelson
2005-11-04 16:05 ` Ingo Molnar
2005-11-04 16:07 ` Linus Torvalds
2005-11-04 16:40 ` Ingo Molnar
2005-11-04 17:22 ` Linus Torvalds
2005-11-04 17:43 ` Andy Nelson
2005-11-04 16:00 ` Linus Torvalds
2005-11-04 16:13 ` Martin J. Bligh
2005-11-04 16:40 ` Linus Torvalds
2005-11-04 17:10 ` Martin J. Bligh
2005-11-04 16:14 ` Andy Nelson
2005-11-04 16:49 ` Linus Torvalds
2005-11-04 15:19 Andy Nelson
2005-11-04 17:03 Andy Nelson
2005-11-04 17:49 ` Linus Torvalds
2005-11-04 17:51 ` Andy Nelson
2005-11-04 20:12 ` Ingo Molnar
2005-11-04 21:04 ` Andy Nelson
2005-11-04 21:14 ` Ingo Molnar
2005-11-04 21:22 ` Linus Torvalds
2005-11-04 21:39 ` Linus Torvalds
2005-11-05 2:48 ` Rob Landley
2005-11-06 10:59 ` Paul Jackson
2005-11-04 21:31 ` Gregory Maxwell
2005-11-04 22:43 ` Andi Kleen
2005-11-05 0:07 ` Nick Piggin
2005-11-06 1:30 ` Zan Lynx
2005-11-06 2:25 ` Rob Landley
2005-11-04 17:56 Andy Nelson
2005-11-04 21:51 Andy Nelson
2005-11-05 1:37 Seth, Rohit, Nick
2005-11-07 0:34 ` Andy Nelson
2005-11-07 18:58 ` Adam Litke
2005-11-07 20:51 ` Rohit Seth
2005-11-07 20:55 ` Andy Nelson
2005-11-07 20:58 ` Martin J. Bligh
2005-11-07 21:20 ` Rohit Seth
2005-11-07 21:33 ` Adam Litke
2005-11-08 2:12 ` David Gibson
2005-11-07 21:11 ` Adam Litke
2005-11-07 21:31 ` Rohit Seth
2005-11-05 1:52 Seth, Rohit, Friday, November
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