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Message-Id: <20140901.180718.1517902146681973349.davem@davemloft.net> Date: Mon, 01 Sep 2014 18:07:18 -0700 (PDT) From: David Miller <davem@...emloft.net> To: brouer@...hat.com Cc: netdev@...r.kernel.org, greearb@...delatech.com, robert@...julf.se Subject: Re: [net-next PATCH] pktgen: add flag NO_TIMESTAMP to disable timestamping From: Jesper Dangaard Brouer <brouer@...hat.com> Date: Thu, 28 Aug 2014 18:14:47 +0200 > Then testing the TX limits of the stack, then it is useful to > be-able to disable the do_gettimeofday() timetamping on every packet. > > This implements a pktgen flag NO_TIMESTAMP which will disable this > call to do_gettimeofday(). > > The performance change on (my system E5-2695) with skb_clone=0, goes > from TX 2,423,751 pps to 2,567,165 pps with flag NO_TIMESTAMP. Thus, > the cost of do_gettimeofday() or saving is approx 23 nanosec. > > Signed-off-by: Jesper Dangaard Brouer <brouer@...hat.com> This is fine, applied, thanks! -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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