Feeds

Belgian boffins boast after boosting TCP to 50 Gbps

Multipath demo could ship a Blu-Ray disk in five seconds

Internet Security Threat Report 2014

Belgian researchers at ICTEAM have announced a Multipath TCP (MPTCP) demonstration that's routed 50 Gbps of traffic across multiple different paths.

While there wouldn't be much to crow about doing this at the physical layer, the ICTEAM researchers have squeezed this performance out of a system that needs to make various kinds of upper-layer decisions about congestion windows and route paths fast enough to keep up with the underlying Ethernet links.

The experimental setup was straightforward enough: two HP DL 380p G7 machines configured with three dual-port 10 Gbps Intel NICs. The test machines were running Linux and hosting a Multipath TCP implementation created by ICTEAM. Netperf opened a single TCP connection between the two servers, and in the video below, the researchers demonstrate the scaling-up of performance, starting with a single NIC and enabling the multipath stack on the additional interfaces.

Of course, if all you needed was a fast LAN connection and nothing else, then Ethernet-level link aggregation would suffice. The point of multipath TCP is to make better use of routed links.

Watch Video

For background, this paper from the Internet Society explains that unmodified, TCP's routing protocols decide on the best path at the beginning of a session, and after that, they “aren't very good” at selecting alternative paths. The multipath modification creates a congestion window for each path available for a session, while trying to avoid problems like link oscillations and packets arriving out of order.

As the ICTEAM researchers explain, MPTCP also presents a standard TCP socket API to the application.

What's impressive in the Belgian demonstration is that the researchers have been able to get the higher-layer operations happening fast enough to realise most of the capacity provided by the six Ethernet ports available.

While the Belgian demonstration is looking at how MPTCP could be used in data centres, the researchers note other applications of the protocol could include helping 3G-WiFi handover happen without upsetting the applications, or even for assisting Ipv4/v6 coexistence. ®

Beginner's guide to SSL certificates

More from The Register

next story
HBO shocks US pay TV world: We're down with OTT. Netflix says, 'Gee'
This affects every broadcaster, every cable guy
Same old iPad? NO. The new 'soft SIMs' are BIG NEWS
AppleSIM 'ware to allow quick switch of carriers
Arab States make play for greater government control of the internet
Nerds told to get lost in last-minute power grab bid at UN meeting
Brits: Google, can you scrape 60k pages from web, pleeease
Hey, c'mon Choc Factory, it's our 'right to be forgotten'
Of COURSE Stephen Elop's to blame for Nokia woes, says author
'Google did have some unique propositions for Nokia'
It's even GRIMMER up North after MEGA SKY BROADBAND OUTAGE
By 'eck! Eccles cake production thrown into jeopardy
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Win a year’s supply of chocolate
There is no techie angle to this competition so we're not going to pretend there is, but everyone loves chocolate so who cares.
Why cloud backup?
Combining the latest advancements in disk-based backup with secure, integrated, cloud technologies offer organizations fast and assured recovery of their critical enterprise data.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.