An Analysis of Transmission and Storage Gains from Sliding Checksum Methods

reportActive / Technical Report | Accession Number: ADA361069 | Open PDF

Abstract:

In a previous report we described, modelled and analyzed a protocol rsync for synchronizing related files at different ends of a communications channel with a minimum of transmitted data. This report identifies the extent of the gains that this method may provide by performing experiments on large repositories of data. The outcome is a new method of compressing large directories of data that together with conventional methods provides major gains in compression factors. As is explained in the report these gains in compression are also indicative of the data transmission gains available when mirroring a collection of files at a remote site using rsync.

Author(s):
Taylor, Richard ; Jana, Rittwik
Author Organization(s):
ELECTRONICS RESEARCH LAB SALISBURY (AUSTRALIA)
Descriptive Note:
Technical rept.
Pagination:
0018

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
DSTO-TR-0743, DODA-AR-01-672
Monitor Series:
AR-01-672, X5
 Subject Terms
Joint Capability Areas:
JCA_6_Net Centric; JCA_5_Command and Control; JCA_6.1_Information Transport; JCA_5.2.3_Share Knowledge and Situational Awareness; JCA_5.2_Understand; JCA_1_Force Support; JCA_1.2_Force Preparation; JCA_1.2.3_Educating; JCA_6.4.1_Secure Information Exchange; JCA_5.3_Planning; JCA_6.2.1_Information Sharing; JCA_6.2.2_Computing Services; JCA_6.4_Information Assurance
Modernization Areas:
Fully Networked C3
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*DATA BASES, *DATA MANAGEMENT, *COMPUTER COMMUNICATIONS, DISTRIBUTED DATA PROCESSING, DATA COMPRESSION, AUSTRALIA, CLIENT SERVER SYSTEMS
Field(s)/Group(s):
Computer Systems
Keyword(s):
FOREIGN REPORTS, DATA SYNCHRONIZATION, RSYNC PROTOCOL, AQ F99 06 1191
Report Date:
1998 Nov 01
Creation Date:
1999 Mar 31