Date: Sat, 2 Dec 2017 13:40:50 +0100 From: Vincenzo Maffione <v.maffione@gmail.com> To: Joe Buehler <aspam@cox.net> Cc: "K. Macy" <kmacy@freebsd.org>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: Re: netmap / LINUX realtime / ixgbevf: huge RX latencies Message-ID: <CA%2B_eA9jvRY4wd3EwPmUemna8NZZksv1LSH7icm6hbyq%2B1tg6sQ@mail.gmail.com> In-Reply-To: <5A229AA8.3070002@cox.net> References: <5A206FB9.3010106@cox.net> <5A229AA8.3070002@cox.net>
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HEAD/11 is the FreeBSD version. Your question is about netmap on Linux, so this is the wrong mailing list. You should open an issue on the official netmap https://github.com/luigirizzo/netmap/issues Cheers Vincenzo 2017-12-02 13:20 GMT+01:00 Joe Buehler <aspam@cox.net>: > K. Macy wrote: > > > HEAD or 11? > > I'm not quite sure what the question means but there is this in the > netmap code: > > ./net/netmap.h:42:#define NETMAP_API 11 /* current > API version */ > > LINUX kernels nowadays can timestamp frames when they arrive from the > NIC. I made a trivial patch to the netmap driver to turn this on and > also pass the timestamp to user space, and will pass on the changes. I > am doing frame latency measurements and this simple change eliminated a > *whole* lot of noise in the measurements. > > Joe Buehler > _______________________________________________ > freebsd-net@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > -- Vincenzo Maffione
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