By IBM Redbooks
The thing of this redbook is to illustrate the AIX 5L and home windows 2000 structures to teach the reader similarities and variations among each one working process. even if you're a home windows specialist seeking to study extra in regards to the most modern model of AIX, AIX 5L, or are an AIX professional and want to tell your self of the newest home windows platform, home windows 2000, you will discover every one bankruptcy during this redbook covers the elemental applied sciences that make each one working process what it is.In resulting chapters, we are going to speak about basic working process strategies, architectures, open criteria compliances, and product packaging for either AIX 5L and home windows 2000. Then, we will move into the consumer interfaces for either, garage administration, safety criteria compliance and operations, and entire structures administration. ultimately, we are going to supply a detailed dialogue of networking ideas on either systems and display the complete volume of scalability and excessive availability on either AIX 5L and home windows 2000.Furthermore, whereas no longer a lot has replaced in home windows 2000, AIX is comparatively new on the time of penning this redbook, and we will make a unique element of declaring the variations among AIX 5L and the former model, AIX model 4.3.3.
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Extra info for AIX 5L and Windows 2000: Side by Side
While tailored primarily for the high throughput and Chapter 2. Operating system architecture 11 reliability requirements of servers, JFS2 is also applicable to client configurations where performance and reliability are desired. Both JFS (the default) and JFS2 are available on POWER systems. Only JFS2 is supported on Itanium-based systems. NFS statd multithreading In AIX 5L, the NFS statd daemon is multi-threaded. 3, when the statd daemon is detecting whether the clients are up or not, it hangs and waits for a time out when a client can not be found.
The mapping of user threads to kernel threads is done using virtual processors. A virtual processor (VP) is a library entity that is usually implicit. The virtual processor looks like a real processor to the user thread; the vp behaves just as a CPU does for a kernel thread. In the library, the virtual processor is a kernel thread or a structure bound to a kernel thread. In the M:1 model, all user threads are mapped to one kernel thread; all user threads run on one VP. The mapping is handled by a library scheduler.
Figure 7 on page 27 illustrates this model. 26 AIX 5L and Windows 2000: Side by Side User Threads VP VP VP Threads Library Kernel Threads Figure 7. 1:1 threads model in AIX 5L In the M:N model, all user threads are mapped to a pool of kernel threads and run on a pool of virtual processors. A user thread may be bound to a specific VP, as in the 1:1 model. All unbound user threads share the remaining VPs. This is the most efficient and complex thread model; the user threads’ programming facilities are shared between the threads’ library and the kernel threads.
AIX 5L and Windows 2000: Side by Side by IBM Redbooks