From: Eric Dumazet <eric.dumazet@gmail.com>
To: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: "David S. Miller" <davem@davemloft.net>,
Hannes Frederic Sowa <hannes@stressinduktion.org>,
netdev@vger.kernel.org
Subject: Re: [net-next PATCH 4/4] net: frag LRU list per CPU
Date: Thu, 25 Apr 2013 12:22:35 -0700 [thread overview]
Message-ID: <1366917755.8964.179.camel@edumazet-glaptop> (raw)
In-Reply-To: <1366917347.26911.624.camel@localhost>
On Thu, 2013-04-25 at 21:15 +0200, Jesper Dangaard Brouer wrote:
> > Q) You want performance and big number of frags to cope with attacks
> > A) resize the hash table when the admin sets a bigger limit
>
> Q) How do we solve the per netns limit vs hash size? (Make limit
> global?)
global limit would be needed anyway.
If we want a per netns limit, that would be a second (per netns)
percpu_counter, but I feel this can be added later.
Thanks !
next prev parent reply other threads:[~2013-04-25 19:22 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-24 15:47 [net-next PATCH 0/4] net: frag patchset for fixing LRU scalability issue Jesper Dangaard Brouer
2013-04-24 15:48 ` [net-next PATCH 1/4] Revert "inet: limit length of fragment queue hash table bucket lists" Jesper Dangaard Brouer
2013-04-25 0:00 ` Eric Dumazet
2013-04-25 13:10 ` Jesper Dangaard Brouer
2013-04-25 13:58 ` David Laight
2013-05-02 7:59 ` Jesper Dangaard Brouer
2013-05-02 15:16 ` Eric Dumazet
2013-05-03 9:15 ` Jesper Dangaard Brouer
2013-04-24 15:48 ` [net-next PATCH 2/4] net: increase frag hash size Jesper Dangaard Brouer
2013-04-24 22:09 ` Sergei Shtylyov
2013-04-25 10:13 ` Jesper Dangaard Brouer
2013-04-25 12:13 ` Sergei Shtylyov
2013-04-25 19:11 ` David Miller
2013-04-24 23:48 ` Eric Dumazet
2013-04-25 3:26 ` Hannes Frederic Sowa
2013-04-25 19:52 ` [net-next PATCH V2] " Jesper Dangaard Brouer
2013-04-29 17:44 ` David Miller
2013-04-24 15:48 ` [net-next PATCH 3/4] net: avoid false perf interpretations in frag code Jesper Dangaard Brouer
2013-04-24 23:48 ` Eric Dumazet
2013-04-24 23:54 ` David Miller
2013-04-25 10:57 ` Jesper Dangaard Brouer
2013-04-25 19:13 ` David Miller
2013-04-24 15:48 ` [net-next PATCH 4/4] net: frag LRU list per CPU Jesper Dangaard Brouer
2013-04-25 0:25 ` Eric Dumazet
2013-04-25 2:05 ` Eric Dumazet
2013-04-25 14:06 ` Jesper Dangaard Brouer
2013-04-25 14:37 ` Eric Dumazet
2013-04-25 13:59 ` Jesper Dangaard Brouer
2013-04-25 14:10 ` Eric Dumazet
2013-04-25 14:18 ` Eric Dumazet
2013-04-25 19:15 ` Jesper Dangaard Brouer
2013-04-25 19:22 ` Eric Dumazet [this message]
2013-04-24 16:21 ` [net-next PATCH 0/4] net: frag patchset for fixing LRU scalabilityissue David Laight
2013-04-25 11:39 ` Jesper Dangaard Brouer
2013-04-25 12:57 ` David Laight
2013-04-24 17:27 ` [net-next PATCH 0/4] net: frag patchset for fixing LRU scalability issue Hannes Frederic Sowa
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