From: Eric Dumazet <eric.dumazet@gmail.com>
To: mbizon@freebox.fr
Cc: David Madore <david+ml@madore.org>,
Francois Romieu <romieu@fr.zoreil.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Hugh Dickins <hughd@google.com>
Subject: Re: kernel 3.2.27 on arm: WARNING: at mm/page_alloc.c:2109 __alloc_pages_nodemask+0x1d4/0x68c()
Date: Thu, 04 Oct 2012 19:17:29 +0200 [thread overview]
Message-ID: <1349371049.16011.90.camel@edumazet-glaptop> (raw)
In-Reply-To: <1349370573.2532.25.camel@sakura.staff.proxad.net>
On Thu, 2012-10-04 at 19:09 +0200, Maxime Bizon wrote:
> yes, on ipv6 forward path the default NET_SKB_PAD is too small, so each
> packet forwarded has its headroom expanded, it is then recycled and gets
> its original default headroom back, then it gets forwarded,
> expanded, ...
Hmm, this sounds bad (especially without recycle)
Might I assume NET_SKB_PAD is 32 on this arch ?
We might adjust NET_SKB_PAD to avoid all these memory copies...
next prev parent reply other threads:[~2012-10-04 17:17 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20120829002548.GA7063@aldebaran.gro-tsen.net>
2012-09-01 2:21 ` kernel 3.2.27 on arm: WARNING: at mm/page_alloc.c:2109 __alloc_pages_nodemask+0x1d4/0x68c() Hugh Dickins
2012-09-01 8:20 ` Francois Romieu
2012-09-02 22:51 ` David Madore
2012-10-04 16:02 ` Maxime Bizon
2012-10-04 16:29 ` Eric Dumazet
2012-10-05 7:41 ` Eric Dumazet
2012-10-05 10:49 ` Maxime Bizon
2012-10-05 12:22 ` Eric Dumazet
2012-10-05 12:37 ` Eric Dumazet
2012-10-05 12:39 ` Eric Dumazet
2012-10-05 12:51 ` Maxime Bizon
2012-10-05 13:02 ` Eric Dumazet
2012-10-05 14:50 ` Maxime Bizon
2012-10-05 15:04 ` Eric Dumazet
2012-10-05 15:15 ` Maxime Bizon
2012-10-05 15:37 ` Eric Dumazet
2012-10-05 16:23 ` [PATCH] net: remove skb recycling Eric Dumazet
2012-10-07 4:41 ` David Miller
2012-10-04 16:50 ` kernel 3.2.27 on arm: WARNING: at mm/page_alloc.c:2109 __alloc_pages_nodemask+0x1d4/0x68c() Eric Dumazet
2012-10-04 17:09 ` Maxime Bizon
2012-10-04 17:17 ` Eric Dumazet [this message]
2012-10-04 17:34 ` Maxime Bizon
2012-10-04 21:27 ` Eric Dumazet
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