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Speaker
Name/Affiliation: Praveen Yalagandula HP Labs

Date/Time: Thursda

y February 22 2007 1:00 p.m. - 2:30 p.m.

Location: TAY 3.128

Host: Mike Dahlin

Talk Title: S%5E3: A Scalable Sensing Service
for Monitoring Large Networked Systems

Talk Abstract:
Efficien

t operation of large-scale distributed systems such as
enterprise networ

ks grid systems and sensor networks is a
grand challenge. One of the c

rucial reasons is the lack of
current and accurate knowledge of the glob

al state of the
individual components in the system including both netwo

rk and
individual machine attributes. Most commercial network
managem

ent systems monitor only a subset of system metrics and
also at a relati

vely coarse grain timescales to be able to
collect and process the measu

rements at a central location.
This impedes decision making at very fine
timescales which is
important for several emerging applications like i

nteractive
multi-media services and early-anomaly detection systems. We<

br>provide a Scalable Sensing Service (S%5E3) that the network
managemen

t subsystem as well as individual
applications/services can subscribe to
and securely get
customized information at very fine timescales suitabl

e for
their purposes. For scalable operation S%5E3 provides the
sens

ing service in a decentralized manner eliminates
unnecessary duplicate

measurements by consolidating sensing
requirements of different applicat

ions and provides inference
engines to estimate network metrics with hi

gh accuracy while
avoiding quadratic all-pair measurements load. S%5E3 c

an be used
for a number of management tasks such as failure or anomalous

behavior detection resource location and placement and
network rou

te setup for optimal performance.

Speaker Bio:
Praveen Yalagandul

a is a Research Scientist with the Networking
Research Group at HP Labs
Palo Alto CA. He joined HP Labs in
August 2005 after finishing his Ph.

D. at the University of
Texas at Austin. He received his Masters degree

from UT Austin
in August 2000 and a Bachelors degree in Computer Science
and
Engineering from Indian Institute of Technology Kharagpur in
Ma

y 1998.

His research interests are wide-area distributed systems
peer-to-peer systems web prefetching and networking