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| The OpenOnload User-level Network Stack |
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Google Tech Talks
February, 7 2008
ABSTRACT
The architecture of conventional networked
systems has remained largely
constant for many years now. However, some
specialised application domains
have adopted alternative architectures. For
example, the HPC community
uses message passing libraries which perform
network processing in
user-space in conjunction with the features
of user-accessible network
interfaces. Such user-level networking
reduces networking overheads
considerably without sacrificing the security
and resource management
functionality that the operating system
normally provides.
Supporting user-level TCP/UDP/IP networking
for a more general set of
applications poses considerable challenges,
including: intercepting system
calls, binary compatability with existing
applications, maintaining
security, supporting fork() and exec(),
passing sockets through Unix domain
sockets and advancing the protocol when the
application is not scheduled.
This talk presents the OpenOnload
architecture for user-level networking.
We describe our solutions to the challenges
outlined above, and novel
techniques to reduce CPU overhead, avoid lock
contention, minimise
interrupt overheads and improve cache
efficiency. Finally we present
performance results of the OpenOnload stack
including protocol compliance,
and plans for further work within the open
source community.
Speaker: Steven Pope
Steven Pope is a CTO at Solarflare
Communications. Previously he
co-founded Level 5 Networks and prior to that
was a post-doctorate
researcher in the field of high-speed
networks and operating systems
at Olivetti Research Labs, which later became
AT&T Laboratories
Cambridge. He holds a PhD in Computer Science
from the University of
Cambridge.
Speaker: David Riddoch
David Riddoch is Chief Software Architect at
Solarflare
Communications. David joined Solarflare with
the merger of Solarflare
with Level 5 Networks in April 2006. David
co-founded Level 5
Networks in July 2002. Previously, David was
the architect and lead
developer of the software for the CLAN high
performance network
project at AT&T Laboratories Cambridge.
David holds a first class
degree in computer science and a Ph.D. in
high performance networking
from the University of Cambridge.
Tags : google techtalks techtalk engedu talk talks googletechtalks education |
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Affichage : 3404
Durée : 5669 s |
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