From mboxrd@z Thu Jan  1 00:00:00 1970
From: "David S. Miller" <davem@redhat.com>
Subject: Re: Route cache performance under stress
Date: Mon, 09 Jun 2003 05:32:18 -0700 (PDT)
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   From: Jamal Hadi <hadi@shell.cyberus.ca>
   Date: Mon, 9 Jun 2003 08:18:50 -0400 (EDT)
   
   I found in my tests with a ethernet driver that prefetching the
   _next_ dma descriptor gave better numbers than prefetching the
   current one but i didnt spend too much time.

Two issues:

1) We have some cycles to borrow for head entry, we can make
   prefetch right before rcu_read_lock()

2) Ideally, hash chains will not exceed 1 (2 at the max)
   entries.

Just some thinking...