Messages in this thread | | | Date | Wed, 18 May 2016 10:16:31 +0200 | From | Jesper Dangaard Brouer <> | Subject | Re: [PATCH net-next] tuntap: introduce tx skb ring |
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On Tue, 17 May 2016 09:38:37 +0800 Jason Wang <jasowang@redhat.com> wrote:
> >> And if tx_queue_length is not power of 2, > >> we probably need modulus to calculate the capacity. > > Is that really that important for speed? > > Not sure, I can test.
In my experience, yes, adding a modulus does affect performance.
> > If yes, round it up to next power of two. > > Right, this sounds a good solution.
Good idea.
-- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat Author of http://www.iptv-analyzer.org LinkedIn: http://www.linkedin.com/in/brouer
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