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 TitleDate AddedCompany
whitepaper Sound Systems on Linux: From the Past to the Future0000-00-00 Novell
  The development of audio and sound support on the Linux system has a long history. It has been implemented since the early version of Linux system. In general, there are two basic components which build the sound system: the sound device driver and the sound server. The former is the hardware abstraction in the lower level, while the latter gives more high-end capabilities like multiplex access and mixing. In other OS like Windows, the boundary between these two components is not clear. The driver does some heavy jobs like mixing in the kernel, too. On the Linux system, however, these are regarded still separately. This paper briefly explains the sound drivers and the typical sound servers in the past.

Tags: Linux - Open Source, Linux Server OS		   
whitepaper A Lightweight Linux Architecture for Resource-Limited Media Systems0000-00-00 University of Paderborn
  Integrating multimedia processing into resource-limited computer systems (either stand-alone or part of a network environment) is more challenging than integrating it into traditional systems. With regards to multimedia applications, conventional systems have essentially limitless memory, non-volatile storage and computing power. Embedded devices are usually limited by at least one of those resources, if not all. This paper describes how the authors approached multimedia processing on limited platforms by introducing a Linux-based approach that focuses specially on the interaction of an enhanced kernel scheduling behavior and a down-scaled operating system. The experimental results clearly show the benefit of the prototype for MPEG processing, as compared to a full-version Linux system.

Tags: Linux Server OS, Application Development		   
whitepaper Utilizing Linux Kernel Components in K420000-00-00 IBM
  This paper discusses how K42 uses Linux-kernel components to support a wide range of hardware, a full-featured TCP/IP stack and Linux le-systems. An examination of the run-time environment within the Linux-kernel is the starting point for a presentation of the strategy taken to incorporate Linux-kernel code in K42. There are four basic aspects of this strategy; presenting K42 as an architecture target for Linux-kernel code, developing interfaces allowing K42 code to call Linux-kernel code, implementing some Linux-kernel internal interfaces using K42 facilities and selectively building Linux-kernel code to include only the desired components. Of these four aspects the first is the most technically interesting and is the focus of most of this paper.

Tags: Linux Server OS		   
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 Congestion Control in Linux TCP0000-00-00 University of Helsinki
  The TCP protocol is used by the majority of the network applications on the Internet. TCP performance is strongly influenced by its congestion control algorithms that limit the amount of transmitted traffic based on the estimated network capacity and utilization. Because the freely available Linux operating system has gained popularity especially in the network servers, its TCP implementation affects many of the network interactions carried out nowadays. The authors describe the fundamentals of the Linux TCP design, concentrating on the congestion control algorithms. The Linux TCP implementation supports SACK, TCP timestamps, Explicit Congestion Notification, and techniques to undo congestion window adjustments after incorrect congestion notifications. In addition to features specified by IETF, Linux has implementation details beyond the specifications aimed to further improve its performance.

Tags: Linux - Open Source, Linux Server OS		   
whitepaper Using Linux VMware and SMART to Create a Virtual Computer to Recreate a Suspect's Computer0000-00-00 Infosecwriters .com
  VMware for Linux is a software package that enables to create a virtual computer within the Linux operating system. SMART is a graphical computer forensic tool written for the Linux operating system. Why SMART? The answer is provided later in this paper when the author discusses the imaging capabilities of SMART. These capabilities make it probably the best imaging tool the author has seen to date, not to mention the computer forensic tools built in to SMART.

Tags: Linux - Open Source, Linux Server OS		   
whitepaper A Formal Event Model of Linux USB Block Device Identities0000-00-00 University of Teesside
  When a USB mass storage device is attached to a Linux box, is appears to the system as a SCSI block device with a logical identity such as sda, sdb etc. A user who is going to mount a file system held on such a device needs to know what this logical identity will be, but from the available documentation this is not easy to predict. The paper presents a formal "Event model" with the necessary and sufficient abstract state for such predictions to be made. The paper shows how such a model contributes to the formulation of pertinent informal documentation, and it illustrates the value of proof analysis in detecting a conceptual error.

Tags: Linux - Open Source, 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		   


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