DragonFlyBSD Multimedia Resources List
Links on this page refer to multimedia resources (podcast, vodcast,
audio recordings, video recordings, photos) related to DragonFlyBSD or
of interest for DragonFlyBSD users.
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Tag: multicast
EuroBSDCon 2008 - George Neville-Neil - Multicast Performance in FreeBSD
Source: EuroBSDCon
Added: 22 October 2008
Tags: eurobsdcon, eurobsdcon2008, multicast, freebsd, george neville-neil
MP3 (1 byte, 39 minutes), OGG (1 byte, 39 minutes), PDF (1 byte, n pages)
In the past ten years most of the research in network
protocols has gone into TCP, leaving UDP to languish
as a local configuration protocol. While the majority
of Internet traffic is TCP, UDP remains the only
IP protocol that works over multicast and as such
has some specific, and interesting uses in some
areas of computing. In 2008 we undertook a study
of the performance of UDP multicast on both 1Gbps
and 10Gbps Ethernet networks in order to see if
changing the physical layer of the network would
give a linear decrease in packet latency. To measure
the possible gains we developed a new network
protocol test program, mctest, which is capable of
recording packet round trip times from many hosts
simultaneously and which we believe accurately
represents how many environments use multicast. The
mctest program has been integrated into FreeBSD and
is now being used to verify the proper operation
of multicast on various pieces of 10Gbps hardware.
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