Red Hat APPLICATION STACK 1.1 RELEASE Manuale Utente Scaricare il pdf (Pagina 10)

Chapter 1: Software Overview

Feature Overview

The SGI Linux Environment is a full featured UNIX-like operating system. It adds

functionalitytotheRedHatLinuxdistributionthatisspeciﬁctoSGIhardwareplatforms.

The 1.1 release of the SGI Linux Environment is based on the 6.0 release of the Red Hat

Linux distribution.

Some of the most signiﬁcant features that Linux provides are listed below:

• An extensible UNIX-like kernel, supporting symmetric multiprocessing

• Typical commands you would expect to see on a UNIX-like system

• Typical conﬁguration ﬁles you would expect to see on a UNIX-like system, along

with an optional graphical frontend

• Development tools such as compilers, debuggers, and libraries

• Internet applications such as web servers and browsers, news servers, network

utilities, e-mail servers, and clients

• Everything needed for network ﬁle sharing with a wide variety of clients

• Desktop environments and graphical applications

The SGI LinuxEnvironment1.1 release runs onthe SiliconGraphics 1400L Server. Other

hardware platforms also may be supported by the 1.1 release, depending on the timing

of their releases.

The SGI Linux Environment has been optimized to provide enhanced performance on

database workloads. SGI has added a numberof features to the operating system kernel

and certain packages to provide increased performance and manageability for database

workloads (such as Oracle 8i).

The performance enhancements include a kernel-level implementation of POSIX

1003.1-1996 asynchronous I/O, a low-overhead interprocess synchronization

mechanism, low overhead and high-volume raw disk I/O, a fast gettimeofday(3) library

function, and support for large amounts of physical memory.

The manageability and supportability improvements include kernel spinlock metering

(for performance bottleneck analysis), kernel proﬁling enhancements, kernel memory

dump capability with analysis tools, kernel gdb hooks, and a built-in kernel debugger

(kdb).

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Red Hat APPLICATION STACK 1.1 RELEASE Manuale Utente Pagina 10