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From: Andi Kleen <ak@suse.de>
To: "David S. Miller" <davem@redhat.com>
Cc: ak@suse.de, niv@us.ibm.com, linux-kernel@vger.kernel.org
Subject: Re: [ANNOUNCE] NF-HIPAC: High Performance Packet Classification
Date: Thu, 26 Sep 2002 02:46:45 +0200	[thread overview]
Message-ID: <20020926024645.A15246@wotan.suse.de> (raw)
In-Reply-To: <20020925.172931.115908839.davem@redhat.com>

On Wed, Sep 25, 2002 at 05:29:31PM -0700, David S. Miller wrote:
>    The current FIBs have a bit heavier locking at least. Fine grain locking
>    btrees is also not easy/nice.
>    
> 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.

-Andi

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.


  reply	other threads:[~2002-09-26  0:42 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 [this message]
2002-09-26  0:44         ` David S. Miller
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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