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Published Articles >> Table of Contents >> Abstract
11th Pacific Rim International Symposium on Dependable Computing (PRDC'05)
pp. 49-56
Availability Assessment of SunOS/Solaris Unix Systems based on Syslogd and wtmpx log files: A case study
Cristina Simache, LAAS-CNRS, 31077 Toulouse Cedex 4 - France
Mohamed Kaaniche, LAAS-CNRS, 31077 Toulouse Cedex 4 - France
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DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/PRDC.2005.20
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| Abstract |
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This paper presents a measurement-based availability
assessment study using field data collected during a 4-
year period from 373 SunOS/Solaris Unix workstations
and servers interconnected through a local area
network. We focus on the estimation of machine
uptimes, downtimes and availability based on the
identification of failures that caused total service loss.
Data corresponds to syslogd event logs that contain a
large amount of information about the normal activity
of the studied systems as well as their behavior in the
presence of failures. It is widely recognized that the
information contained in such event logs might be
incomplete or imperfect. The solution investigated in
this paper to address this problem is based on the use
of auxiliary sources of data obtained from wtmpx files
maintained by the SunOS/Solaris Unix operating
system. The results obtained suggest that the combined
use of wtmpx and syslogd log files provides more
complete information on the state of the target systems
that is useful to provide availability estimations that
better reflect reality.
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 Additional Information
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Citation:
Cristina Simache, Mohamed Kaaniche,
"Availability Assessment of SunOS/Solaris Unix Systems based on Syslogd and wtmpx log files: A case study,"
prdc,
pp. 49-56,
11th Pacific Rim International Symposium on Dependable Computing (PRDC'05),
2005
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