Logging-Informationen von Systemen und Diensten nehmen in ihrem Umfang durch den Detaillierungsgrad komplexer Anwendungen, aber auch durch die zunehmende Anzahl von verwendeten Systemen (etwa aufgrund der vermehrten schnellen Bereitstellung von virtuellen Maschinen z.B. in Cloud Umgebungen) immer weiter zu. Um die zeitnahe Auswertung und Reaktion auf relevante Logging-Informationen zu gewährlei...

Among a lot of rollback-recovery protocols developed for providing fault-tolerance for long-running distributed applications, sender-based message logging with checkpointing is one of the most lightweight fault-tolerance techniques to be capable of being applied in this field, significantly decreasing high failure-free overhead of synchronous logging by using message sender's volatile memory as...

Over the last few years, there have been several efforts to use logging to improve performance, reliability, and recovery times of file systems. The two major techniques are metadata logging, where the log records metadata changes and is a supplement to the on-disk file system, and log-structured file systems, whose log is their only on-disk representation. When the file system is mainly or who...

Continuous logging of a person's geographical position is required for various " life-log " applications, such as memory aids, automatic blog generation, and life pattern analysis. GPS is one way of logging, but it is unable to track movements indoors, and hence cannot track people !G s ordinary activities. We propose a WiFi-based location detection technology for location logging. It detects a...

This paper presents an efficient scheme to implement the optimistic message logging and the asynchronous recovery for the mobile computing environment. Most of the coordinated checkpointing schemes may not be suitable for the mobile environment, since the unreliable mobile hosts and the fragile network connection may hinder any kind of coordination for checkpointing and recovery. In this paper,...

The Peruvian Amazon is an important arena in global efforts to promote sustainable logging in the tropics. Despite recent efforts to achieve sustainability, such as provisions in the US-Peru Trade Promotion Agreement, illegal logging continues to plague the region. We present evidence that Peru's legal logging concession system is enabling the widespread illegal logging via the regulatory docum...

-This paper based on crossplot and core data,analysis the Pu Xi oilfield ,Putao Hua oil layer ‘s conventional logging response characteristic.Based on the describe of the three cored wells, Putao Hua oil layer is mainly made up with siltstone, muddy siltstone, silty mudstone,. First normalized the well logging curves, elimination the influence of the nongeological factors to the well logging cu...

Rollback techniques that use message logging and deterministic replay can be used in parallel systems to recover a failed node without involving other nodes. Distributed shared memory (DSM) systems cannot directly apply message-passing logging techniques because they use inherently nondeterministic asynchronous communication. This paper presents new logging schemes that reduce the typically hig...

In main memory databases, fuzzy checkpointing gives less transaction overhead due to its asynchronous backup feature. However, till now, fuzzy checkpointing has considered only physical logging schemes. The size of the physical log records is very large, and hence it incurs space and recovery processing overhead. In this paper, we propose a recovery method based on a hybrid logging scheme, whic...

The distributed shared memory(DSM) system transforms an existing network of workstations to a powerful shared-memory parallel computer which could deliver superior price/performance. To provide fault tolerance to DSM system , checkpointing and logging is widely used. In this paper, we propose a novel logging scheme which greatly reduces the amount of logging by tracking the dependency informati...