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 TitleDate AddedCompany
whitepaper Linux for Low Cost Eddy Current Detectors Finds Nails in Your Walls and Cracks in Your Aircraft0000-00-00 Institute of Electrical and Electronics Engineers
  This handy little unit attaches to the notebook or PDA computer. Placed against a wall, it detects nails and other structures inside. Requires linux running on a device with duplex stereo sound, a few electronic parts and a bit of soldering assembly. In addition to being a fun toy and occasionally useful tool, it demonstrates why Linux intrinsically accelerates prototyping and development of new products. The talk will discuss the acquisition software, review the performance data it achieved under laboratory testing and demonstrate the unit.

Tags: Linux Server OS		   
whitepaper Experiences Supporting Linux at DESY Hamburg0000-00-00 DESY
  In the commercial market Linux running on commodity PC hardware is reaching critical mass. But compared to the already supported UNIX flavors at DESY it introduces more than the difficulty of a new UNIX operating system: The challenge was and still is to satisfy the support requests with a minimum effort of human resources so that the low cost for the hardware should not be compensated by high cost for the support. This could be achieved using a hands-off network-based installation mechanism which takes less than one hour. The resulting system has the same functionality as other supported UNIX flavors at DESY.

Tags: UNIX, Linux Server OS		   
whitepaper Scalability of Linux Event-Dispatch Mechanisms0000-00-00 University of Massachusetts
  Many Internet servers these days have to handle not just heavy request loads, but also increasingly face large numbers of concurrent connections. In this paper, the authors discuss some of the event-dispatch mechanisms used by Internet servers to handle the network I/O generated by these request loads. The authors focus on the mechanisms supported by the Linux kernel, and measure their performance in terms of their dispatch overhead and dispatch throughput. The comparative studies show that POSIX.4 Real Time signals (RT signals) are a highly efficient mechanism in terms of the overhead and also provide good throughput compared to mechanisms like select() and /dev/poll.

Tags: Linux Server OS		   
whitepaper Scalable Cluster Computing With MOSIX for LINUX0000-00-00 Hebrew University of Jerusalem
  Mosix is a software tool for supporting cluster computing. It consists of kernel-level, adaptive resource sharing algorithms that are geared for high performance, overhead-free scalability and ease-of-use of a scalable computing cluster. The core of the Mosix technology is the capability of multiple workstations and servers (nodes) to work cooperatively as if part of a single system. The algorithms of Mosix are designed to respond to variations in the resource usage among the nodes by migrating processes from one node to another, preemptively and transparently, for load-balancing and to prevent memory depletion at any node. So far Mosix was developed 7 times, for different version of Unix, BSD and most recently for Linux. This paper describes the 7-th version of Mosix, for Linux.

Tags: Linux Server OS, High Performance Computing		   
whitepaper Model Checking an Entire Linux Distribution for Security Violations0000-00-00 University of California
  Software model checking has become a popular tool for verifying programs' behavior. Recent results suggest that it is viable for finding and eradicating security bugs quickly. However, even state-of-the-art model checkers are limited in use when they report an overwhelming number of false positives, or when their lengthy running time dwarfs other software development processes. In this paper, the authors report the experiences with software model checking for security properties on an extremely large scale - an entire Linux distribution consisting of 839 packages and 60 million lines of code.

Tags: Security Management, Linux Server OS		   
whitepaper A Performance Comparison of Linux and a Lightweight Kernel0000-00-00 University of New Mexico
  This paper compares running the Linux operating system on the compute nodes of ASCI Red hardware to running a specialized, highly-optimized LightWeight Kernel (LWK) operating system. The authors have ported Linux to the compute and service nodes of the ASCI Red supercomputer, and have run several benchmarks. The paper presents performance and scalability results for Linux compared with the LWK environment. To the knowledge, this is the first direct comparison on identical hardware of Linux and an operating system designed specifically for large-scale supercomputers. In addition to presenting these results, it will discuss the limitations of both operating systems, in terms of the empirical evidence as well as other important factors.

Tags: Linux Server OS		   
whitepaper The Virtual Processor Interface: Linux Kernel Support for User-Level Thread Systems0000-00-00 University of San Francisco
  Despite an increasing need for thread support in language run-time systems and parallel libraries such as in Java and OpenMP, there is limited support for custom, multiprocessor capable, user-level thread systems in the Linux kernel. To address this lack of support the authors have developed the Virtual Processor Interface (VPI) for Linux. The VPI implementation consists of a small set of kernel modifications and new system calls combined with a small user-level library that provide an interface that can be used to build thread systems. This paper describes VPI and the implementation. The authors have implemented a complete thread system using VPI, called VPIthreads, and compare its performance to that of current user-level and kernel-level thread systems.

Tags: Linux Server OS		   
whitepaper Using HP Insight Control Linux Edition in the Same Environment as HP Systems Insight Manager and HP Rapid Deployment Pack2007-04-01 Hewlett-Packard (HP)
  This white paper also describes some considerations involved in using these products, particularly from a management network standpoint. These products might contend for the same network services if one does not configure the network properly. Presently, Insight Control Linux Edition supports only HP BladeSystem c-Class and p-Class server blades, so the server resources most relevant to the discussion in this white paper are HP server blades.

Tags: Blades, Linux Server OS		   
whitepaper Bridging the Technology Gap With HP Integrity Solutions for Radiology: Winning With HP Integrity Running Linux and Siemens Syngo Workflow2007-04-01 Hewlett-Packard (HP)
  When choosing the best technology to support the requirements of a 21st century RIS, HP Integrity servers running Linux deliver the outstanding performance and economics needed to supercharge critical radiology applications while reducing total cost of ownership. HP offers unparalleled depth knowledge and experience in Linux and the 64-bit HP Integrity servers. Radiology information systems, solutions for paperless and film-less workflow, optimize workflow with all relevant patient data at a glance. Siemens syngo Workflow not only integrates with healthcare information systems, but also has the unique ability to combine its clinical information with Siemens Medical Imaging solutions.

Tags: Linux Server OS, Application Development		   
whitepaper MetaTM/TxLinux: Transactional Memory for an Operating System2007-03-30 Association for Computing Machinery
  This paper quantifies the effect of architectural design decisions on the performance of TxLinux. TxLinux is a Linux kernel modified to use transactions in place of locking primitives in several key subsystems. The authors run TxLinux on MetaTM, which is a new Hardware Transaction Memory (HTM) model. MetaTM contains features that enable efficient and correct interrupt handling for an x86-like architecture. Live stack overwrites can corrupt non-transactional stack memory and requires a small change to the transaction register checkpoint hardware to ensure correct operation of the operating system. The paper also proposes stack-based early release to reduce spurious conflicts on stack memory between kernel code and interrupt handlers.

Tags: Linux Server OS