BSD or Linux:
Short summary:
use of legacy code from Linux FreeBSD BSD/OS Solaris HPUX Digital Unix SCO. IRIX and other systems. Linux in contrast offers such compatibility ...
Long summary:
BSD or Linux:Page 1BSD or Linux: Which Unix is best for embedded applications?A Wasabi Systems White Paper Contents: I. Introduction II. Commercial Features: The GPL License 1. The GPL License 2. The BSD License 3. Consequences in the Embedded Market III. Technical Features 1.Portability/ Hardware Abstraction2. Kernel Design and Development Tools 3. OS Development Models 4. Maturity of Code Base 5. Memory Management System 6. Threading and Scheduling 7.Application SupportIV. Conclusion I. Introduction With Linuxs breakthrough into the server and desktop markets the OS has emerged as an option for embedded OEMs as well. Several vendors have created their own distributions of Linux intended for the embedded market and while these have met with only limited success OEMs are right to look at Unixlike operating systems for their advanced embedded needs. However as this white paper will discuss there are several features which make Linux a less than optimal Unix choice for embedded applications. These features are divided into two general categories: commercial/legal and technical. On the commercial side Linux is severely hampered by its license whichrequires that all modifications to the Linux kernel (and several other modules of the OS as well) be made open source. While this licensing feature is not important in the desktop or server space where kernel modifications are rare it is critical in the embedded space where modifications to the kernel are part and parcel of OEMs OS investment. On the technical side Linux is constrained by its less than robust development tools on the one hand and its lack of an adequate hardware abstraction layer on the other. Were Linux the sole Unixderived OS choice OEMs might still be justified inselecting it over the increasingly obsolete VxWorks operating system or the unwieldy Windows offerings. However concurrent with the expansion of FreeBSD in the server space (the OS was recently chosen by Yahoo! for its Hotjobs site) the 1 P ...
Source: www.wasabisystems.com
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