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From: "David S. Miller" <davem@redhat.com>
To: ak@suse.de
Cc: niv@us.ibm.com, linux-kernel@vger.kernel.org
Subject: Re: [ANNOUNCE] NF-HIPAC: High Performance Packet Classification
Date: Wed, 25 Sep 2002 17:44:05 -0700 (PDT)	[thread overview]
Message-ID: <20020925.174405.102576685.davem@redhat.com> (raw)
In-Reply-To: <20020926024645.A15246@wotan.suse.de>

   From: Andi Kleen <ak@suse.de>
   Date: Thu, 26 Sep 2002 02:46:45 +0200

   > Also not necessary, only the top level cache really needs to be
   > top performance.
   
   Sure, but if they were unified (that is what I understood what the original
   poster wanted to do) then they would be suddenly much more performance
   critical and need fine grained locking.
   
This can be made, if necessary.  If the toplevel flow cache lookup
table is sized appropriately, I doubt anything will be needed.
   
   P.S.: One big performance problem currently is ip_conntrack. It has a bad
   hash function and tends to have a too big working set (beyond cache size)
   Some tuning in this regard would help a lot of workloads.
   
This is well understood problem and a fix is in the works.
See the netfilter lists.

  reply	other threads:[~2002-09-26  0:45 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <3D924F9D.C2DCF56A@us.ibm.com.suse.lists.linux.kernel>
     [not found] ` <20020925.170336.77023245.davem@redhat.com.suse.lists.linux.kernel>
2002-09-26  0:31   ` Andi Kleen
2002-09-26  0:29     ` David S. Miller
2002-09-26  0:46       ` Andi Kleen
2002-09-26  0:44         ` David S. Miller [this message]
2002-09-26  9:00       ` Roberto Nibali
2002-09-26  9:06         ` David S. Miller
2002-09-26  9:24           ` Roberto Nibali
2002-09-26  9:21             ` David S. Miller
2002-09-26 15:13             ` James Morris
2002-09-26 20:51               ` Roberto Nibali
2002-09-26 10:25           ` Roberto Nibali
2002-09-26 10:20             ` David S. Miller
2002-09-26 10:49               ` Roberto Nibali
2002-09-26 12:03           ` jamal
2002-09-26 20:23             ` Roberto Nibali
2002-09-27 13:57               ` jamal
2002-09-26 12:04         ` Andi Kleen
2002-09-26 20:49           ` Roberto Nibali
2002-09-30 17:36         ` Bill Davidsen
2002-10-02 17:37           ` Roberto Nibali
2002-09-26  1:17     ` Nivedita Singhvi
2002-09-26  1:15       ` Andi Kleen
2002-09-26  0:06 Nivedita Singhvi
2002-09-26  0:03 ` David S. Miller
2002-09-26  0:50   ` Nivedita Singhvi
2002-09-26  0:40     ` David S. Miller
2002-09-26  1:09       ` Nivedita Singhvi

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