From: David Miller <davem@davemloft.net>
To: hannes@stressinduktion.org
Cc: david.lebrun@uclouvain.be, netdev@vger.kernel.org
Subject: Re: [RFC PATCH net-next] ipv6: implement consistent hashing for equal-cost multipath routing
Date: Thu, 01 Dec 2016 15:26:38 -0500 (EST) [thread overview]
Message-ID: <20161201.152638.37238894730380417.davem@davemloft.net> (raw)
In-Reply-To: <1480511568.3649771.803688521.5B47BE8F@webmail.messagingengine.com>
From: Hannes Frederic Sowa <hannes@stressinduktion.org>
Date: Wed, 30 Nov 2016 14:12:48 +0100
> David, one question: do you remember if you measured with linked lists
> at that time or also with arrays. I actually would expect small arrays
> that entirely fit into cachelines to be actually faster than our current
> approach, which also walks a linked list, probably the best algorithm to
> trash cache lines. I ask because I currently prefer this approach more
> than having large allocations in the O(1) case because of easier code
> and easier management.
I did not try this and I do agree with you that for extremely small table
sizes a list or array would perform better because of the cache behavior.
prev parent reply other threads:[~2016-12-01 20:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-24 19:59 [RFC PATCH net-next] ipv6: implement consistent hashing for equal-cost multipath routing David Lebrun
2016-11-28 16:22 ` David Miller
2016-11-28 20:16 ` David Lebrun
2016-11-28 20:32 ` David Miller
2016-11-28 20:58 ` David Lebrun
2016-11-30 13:12 ` Hannes Frederic Sowa
2016-12-01 20:26 ` David Miller [this message]
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