Enhancing the Impregnability of Linux Servers

Enhancing Linux Scheduler Scalability

This paper examines the scalability of the Linux 2.4.x scheduler as the load and number of CPUs increases. We show that the current scheduler design involving a single runqueue and lock can suffer from lock contention problems which limits its scalability. We present alternate designs using multiple runqueues and priority levels that can reduce lock contention while maintaining the same functio...

Mandatory Access Control for Linux Clustered Servers

In today’s world, the use of computers and networks is growing and the vision of a single infrastructure for voice and data is becoming a reality. However, with different technologies and services using the same networking infrastructure, the realization of this vision requires higher levels of security to be implemented in computer systems. Current security solutions do not address all of the ...

Enhancing Application Servers with Semantics

We report on using semantic technology to enhance application servers. In particular, the conclusion of our analysis is that OWL-S, an emerging effort for semantic webservice descriptions, is a good starting point for supporting many frequent tasks within a concrete application server which facilitates reusing and combining Semantic Web software modules (e.g. ontology stores, reasoners, etc.). ...

Enhancing Security of Linux-based Android Devices

Migrating from UNIX SMP Servers to Linux Clusters

The increasingly compelling price/performance and absolute performance advantage of Intel Architecture-based servers, coupled with the huge upswing in the popularity of Linux, is leading major data centers to migrate mission-critical applications from traditional large UNIX systems to Intel Architecture-based servers running Linux. Linux is very similar to UNIX – very little retraining of staff...