April 2016
Beginner to intermediate
463 pages
18h 53m
English
Content preview from Big Data
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
Performance Evaluation of Protocols for Big Data Transfers
53
0
10
20
30
40
50
0 100 200 300 400 500
Link uilization (%)
Emulated delay (ms)
HPN-SSH
UDT
Tsunami
FDT
RBUDP
Figure 3.3: Goodput measured for each protocol with delay emulated with dummynet.
compared to FDT. Performance of UDT degrades less compared to the protocols that use TCP,
however it still degrades because the flow window size of UDT is limited by UDP’s socket
buffer size. RBUDP is not affected significantly because it has a minimal congestion-avoidance
algorithm, but it also slightly degrades because it also uses TCP as a signaling transport to
ensure reliability, which degrades with increasing ...