Performance Measurements of the Multimedia Testbed on Real-Time Mach.

reportActive / Technical Report | Accession Number: ADA282658 | Need Help?

Abstract:

Multimedia has generated widespread interest in real-time support within general purpose operating systems. Multimedia also places new demands on operating systems for interprocess communication. The Multimedia Testbed is a set of applications that stress consistent low-latency response and efficient interprocess communication for large blocks of data. The Multimedia Testbed was ported to Real-Time Mach in the hopes of providing predictable low-latency response and, consequently, good synchronization and low jitter as required for multimedia applications. Our work compares the performance of Real-Time Mach with that of Mach 3.0. Although the fixed-priority scheduling, of Real-Time Mach is a substantial improvement, user threads are still preempted by device drivers, and the overall real-time performance is not suitable for multimedia applications. We discuss areas where Real-Time Mach needs improvement.

Author(s):
Dannenberg, Roger B. ; Anderson, David B. ; Neuendorffer, Tom ; Rubine, Dean
Author Organization(s):
CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF COMPUTER SCIENCE
Pagination:
0020

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
CMU-CS-94-141
Monitor Series:
XD
 Subject Terms
Joint Capability Areas:
JCA_8.1.1_Inform Domestic and Foreign Audiences; JCA_8.1_Communicate; JCA_8_Building Partnerships
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*REAL TIME, *COMPUTER COMMUNICATIONS, *OPERATING SYSTEMS(COMPUTERS), *TEST BEDS, JITTER, RESPONSE, SCHEDULING, TIME, WORK
Field(s)/Group(s):
Computer Programming and Software
Keyword(s):
*Multimedia, *Interprocessing
Report Date:
1994 Apr 01