NounSingular microkernel Plural microkernels microkernel (plural microkernels)
From Wiktionary under the GNU Free Documentation License. In computer science, a microkernel is the near-minimum amount of software that can provide the mechanisms needed to implement an operating system. These mechanisms include low-level address space management, thread management, and inter-process communication(I.P.C). As an operating system design approach, microkernels permit typical operating system services, such as device drivers, protocol stacks, file systems and user interface code, to run in user space. If the hardware provides multiple rings or CPU modes, the microkernel is the only software executing at the most privileged level (generally referred to as supervisor or kernel mode). Microkernels are closely related to exokernels. They also have much in common with hypervisors, but the latter make no claim to minimality, and are specialized to supporting virtual machines; indeed, the L4 microkernel frequently finds use in a hypervisor capacity. The historical term nanokernel has been used to distinguish modern, high-performance microkernels from earlier implementations which still contained many system services. However, nanokernels have all but replaced their microkernel progenitors, and the term has fallen into disuse. From Wikipedia under the
GNU Free Documentation License Under what license is the microkernel Coyotos? Q. My searching has pointed out that the project is "open-source," but that can mean many things. Does anyone know exactly which license the project is under? GPL seems to stand for "guarded pay-load" in the project, which makes searching difficult. Help me, Yahoo! Answers, you're my only hope. Asked by LinkTiger - Mon Sep 24 00:14:05 2007 - - 1 Answers - 0 Comments A. As far as the www.coyotos.org goes, there is little mention of license terms. But wikipedia pages about coyotos strongsly suggests that if Coyotos is under any other license now, it will soon be changed to GPL. Otherwise, making it work with the GNU Hurd which is under GPL will be a legal maze. I bet Yahoo! answers is not your only hope in finding this out. Ask the developers on their mailing list ;) Answered by katnev - Mon Sep 24 05:31:53 2007 Explain the difference between microkernel and macro kernel.? Q. Give an example of microkernel. Asked by BLAZER...! - Mon Jul 23 10:09:21 2007 - - 2 Answers - 0 Comments A. Microkernel - a kernel that tries to run most services - like networking, filesystem, etc. - as daemons / servers in user space. All that's left to do for the kernel are basic services, like memory allocation, scheduling, and messaging (Inter Process Communication). Macrokernel is called Hybrid-kernel by Microsoft. Its a combination between a Microkernel and Monolithic Kernel. Answered by knight1357 - Mon Jul 23 10:17:44 2007 About Unix?
Q. I would like to know the following details about Unix:- Structure: design of the operating system oSystem structure simple, layered, microkernel etc oKernel type monolithic, microkernel, etc oUser Interface CLI, GUI, etc Process: type and management of supported process oProcess Management Single task, multitasks etc oType of process process, thread, etc oProcess scheduling round robin, FIFO, multiple queue, etc oAPI Posix, Win32, etc Memory: information about main and virtual memory oAllocation: fixed, segmentation, paging etc oPage replacement: FIFO, LRU, etc oAddressing Make it as simple as possible please. I just want the technical terms and uses and such. The commands and such are not necessary. Thank you… [cont.] Asked by Nicholas G - Sun Jul 23 18:34:42 2006 - - 1 Answers - 0 Comments A. Structure: design of the operating system oSystem structure simple, layered, microkernel etc YES oKernel type monolithic, microkernel, etc YES oUser Interface CLI, GUI, etc YES Process: type and management of supported process oProcess Management Single task, multitasks etc YES oType of process process, thread, etc YES oProcess scheduling round robin, FIFO, multiple queue, etc YES oAPI Posix, Win32, etc POSIX, UNIX, C, many others Memory: information about main and virtual memory oAllocation: fixed, segmentation, paging etc YES oPage replacement: FIFO, LRU, etc YES oAddressing VIRTUAL or DIRECT, BIG-ENDIAN or LITTLE-ENDIAN, 8-bit or 16-bit or 24-bit (I kid you not: Cray X-MP running UNICOS) or 32-bit or 64-bit or 128- [cont.] Answered by BalRog - Thu Jul 27 14:37:05 2006 From Yahoo Answer Search: "microkernel"  news.google.com Java World ... to say the least, as Glassfish and JBoss played catch-up to delivering a micro-kernel architecture, right at the moment that they finally caught up, ... news.google.com AsiaOne The unique PAY1 system is built on an operating system named QNX which is a specialised microkernel -based OS that is used because it is very stable and able ... and more » news.google.com Pro-Linux Mach ist doch noch einer der alten 1G- Microkernel und schneckenlahm mit schlechter IPC-Performanz. Von andi am Do, 14. Januar 2010 um 17:40. Re[2]: Hurd-Entwicklung noch vorhanden? Pro-Linux all 2 news articles » From Google News Search: "microkernel"  qnx.com 900px x 900px | 325.40kB [source page] Secure microkernel by design QNX Software Systems offers one of the most comprehensive networking solutions for connected and distributed industrial systems A microkernel RTOS provides protective barriers between  e1os.org 350px x 480px | 3.60kB [source page] In figure an optimized crossdomain call path is shown with red dashed line Cache consistency is maintained by the Object Registry through the IAccessCache interface Communication between microkernel and Object Registry during crossdomain call The dashed line shows normal and optimized red crossdomain call path Other important From Yahoo Image Search: "microkernel"  vishy-ranganath.blogspot.com Vishy Ranganath Fri, 08 Jan 2010 01:48:00 GM But Minix has a . microkernel. design in which the operating system is composed of a set of processes (the kernel being just one of them) that work together by passing messages to each other. In this case it becomes necessary to ... From Google Blog Search: "microkernel" |
