From: Eric Dumazet <eric.dumazet@gmail.com>
To: Jan Engelhardt <jengelh@medozas.de>
Cc: Jesper Dangaard Brouer <hawk@diku.dk>,
Patrick McHardy <kaber@trash.net>,
hawk@comx.dk,
Linux Kernel Network Hackers <netdev@vger.kernel.org>,
Netfilter Developers <netfilter-devel@vger.kernel.org>
Subject: Re: DDoS attack causing bad effect on conntrack searches
Date: Fri, 23 Apr 2010 09:46:20 +0200 [thread overview]
Message-ID: <1272008780.7895.7746.camel@edumazet-laptop> (raw)
In-Reply-To: <alpine.LSU.2.01.1004230922120.24961@obet.zrqbmnf.qr>
Le vendredi 23 avril 2010 à 09:23 +0200, Jan Engelhardt a écrit :
> On Thursday 2010-04-22 23:28, Jesper Dangaard Brouer wrote:
>
> > On Thu, 22 Apr 2010, Eric Dumazet wrote:
> >
> >> What exact version of kernel are you running ?
> >
> > 2.6.31.7-pvlan2G #3 SMP PREEMPT
> > 32-bit kernel with 2G kernel mem (you showed me that trick).
>
> Since when is enabling 2G a trick? :)
> There's CONFIG_VMSPLIT_2G (and 2G_OPT) for quite some time now.
>
Yes, when you know it, its not a trick anymore :)
Years ago, we had to manually change PAGE_OFFSET, and I remember some
machines with PAGE_OFFSET 0xA0000000 (1.5 GB LOWMEM),
or 0xB0000000 (1.25 GB), (PAE off)
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next prev parent reply other threads:[~2010-04-23 7:46 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-22 12:58 DDoS attack causing bad effect on conntrack searches Jesper Dangaard Brouer
2010-04-22 13:13 ` Changli Gao
2010-04-22 13:17 ` Patrick McHardy
2010-04-22 14:36 ` Eric Dumazet
2010-04-22 14:53 ` Eric Dumazet
2010-04-22 15:51 ` Paul E. McKenney
2010-04-22 16:02 ` Eric Dumazet
2010-04-22 16:34 ` Paul E. McKenney
2010-04-22 20:38 ` Jesper Dangaard Brouer
2010-04-22 21:03 ` Eric Dumazet
2010-04-22 21:14 ` Eric Dumazet
2010-04-22 23:44 ` David Miller
2010-04-23 5:44 ` Eric Dumazet
2010-04-23 8:13 ` David Miller
2010-04-23 8:18 ` David Miller
2010-04-23 8:40 ` Jesper Dangaard Brouer
2010-04-23 10:36 ` Patrick McHardy
2010-04-23 11:06 ` Eric Dumazet
2010-04-22 21:28 ` Jesper Dangaard Brouer
2010-04-23 7:23 ` Jan Engelhardt
2010-04-23 7:46 ` Eric Dumazet [this message]
2010-04-23 7:55 ` Jan Engelhardt
2010-04-23 9:23 ` Eric Dumazet
2010-04-23 10:55 ` Patrick McHardy
2010-04-23 11:05 ` Eric Dumazet
2010-04-23 11:06 ` Patrick McHardy
2010-04-23 20:57 ` Eric Dumazet
2010-04-24 11:11 ` Jesper Dangaard Brouer
2010-04-24 20:11 ` Eric Dumazet
2010-04-26 14:36 ` Jesper Dangaard Brouer
2010-05-31 21:21 ` Eric Dumazet
2010-06-01 0:28 ` Changli Gao
2010-06-01 5:05 ` Eric Dumazet
2010-06-01 5:48 ` Changli Gao
2010-06-01 10:18 ` Patrick McHardy
2010-06-01 10:31 ` Eric Dumazet
2010-06-01 10:41 ` Patrick McHardy
2010-06-01 16:20 ` [RFC nf-next-2.6] conntrack: per cpu nf_conntrack_untracked Eric Dumazet
2010-06-04 11:40 ` Patrick McHardy
2010-06-04 12:10 ` Changli Gao
2010-06-04 12:29 ` Patrick McHardy
2010-06-04 12:36 ` Eric Dumazet
2010-06-04 16:25 ` [PATCH nf-next-2.6] conntrack: IPS_UNTRACKED bit Eric Dumazet
2010-06-04 20:15 ` [PATCH nf-next-2.6 2/2] conntrack: per_cpu untracking Eric Dumazet
2010-06-08 14:29 ` Patrick McHardy
2010-06-08 14:52 ` Eric Dumazet
2010-06-08 15:12 ` Eric Dumazet
2010-06-09 12:45 ` Patrick McHardy
2010-06-08 14:12 ` [PATCH nf-next-2.6] conntrack: IPS_UNTRACKED bit Patrick McHardy
2010-04-23 10:56 ` DDoS attack causing bad effect on conntrack searches Patrick McHardy
2010-04-23 12:45 ` Jesper Dangaard Brouer
2010-04-23 13:57 ` Patrick McHardy
2010-04-22 13:31 ` Jesper Dangaard Brouer
2010-04-23 10:35 ` Patrick McHardy
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