מוחמד מגאדלה, הרצאה סמינריונית למגיסטר
יום רביעי, 2.2.2011, 12:30
CIFS is the underlying protocol in Windows OS's for disk
shares access such as copying files from and to remote
stations in the LAN, exploring disk shares and sending jobs to
a LAN printer. CIFS is also implemented for Linux/Unix OSs in
SAMBA. The CIFS protocol is chatty and suffers from redundancy
in messages even in simple and basic disk shares accesses.
CIFS's ineffectiveness is intensified in satellite networks in
which the round trip delay is large.
This work presents a proxy-based approach to CIFS acceleration
in satellite networks. The acceleration is done at the level
of the application layer without any modification neither to
the TCP layer nor to the server and the client. We studied and
observed CIFS protocol behavior and developed a solution that
is fitted to the protocol.
The solution is light-weight, it requires little memory space,
is transparent to both client machines and servers, and it
fits into existing VSAT technologies aimed at developing
countries. We adapted several techniques and developed
algorithms to lessen the number of round trip interactions
required to perfrom a single user operation.
Performance evaluation shows latency improvements by a factor
of two in many practical settings. In addition, bandwidth
consumption is reduced.
The talk is self-contained.