JNI Fault Tolerance Using Java ProcessBuilder
... Although multi-processing does not seem to require more heap memory than multi-threading, there is a possibility that more memory has been allocated outside of the JVM for running the native code. The profiling utility used does not give information on host memory consumption. Thus, a system tool su ...
... Although multi-processing does not seem to require more heap memory than multi-threading, there is a possibility that more memory has been allocated outside of the JVM for running the native code. The profiling utility used does not give information on host memory consumption. Thus, a system tool su ...
ppt
... – Internally concurrent because have to deal with concurrent requests by multiple users – But no protection needed within kernel ...
... – Internally concurrent because have to deal with concurrent requests by multiple users – But no protection needed within kernel ...
OPERATING SYSTEM 1. What are the advantages of spooling? The
... Major weakness of monitors is the absence of concurrency if a monitor encapsulates the resources, since only one process can be active within a monitor at a time. There is the possibility of deadlocks in the case of nested monitors calls. Monitor concept is its lack of implementation most commonly u ...
... Major weakness of monitors is the absence of concurrency if a monitor encapsulates the resources, since only one process can be active within a monitor at a time. There is the possibility of deadlocks in the case of nested monitors calls. Monitor concept is its lack of implementation most commonly u ...
Slide 1
... To designate a file’s location, you must first specify the device where the file is stored – The main hard disk usually is referred to as Drive C A disk partition is a section of hard disk drive that is treated as a separate storage unit – Partitions can be assigned drive letters – Partitions ar ...
... To designate a file’s location, you must first specify the device where the file is stored – The main hard disk usually is referred to as Drive C A disk partition is a section of hard disk drive that is treated as a separate storage unit – Partitions can be assigned drive letters – Partitions ar ...
Spawn server
... messaging API. • Each process simply needs to know the name of the other processes it wishes to communicate with ...
... messaging API. • Each process simply needs to know the name of the other processes it wishes to communicate with ...
Threads, SMP, and Micro
... Processes and Threads • Resource ownership - process includes a virtual address space to hold the process image • Scheduling/execution- follows an execution path that may be interleaved with other processes ...
... Processes and Threads • Resource ownership - process includes a virtual address space to hold the process image • Scheduling/execution- follows an execution path that may be interleaved with other processes ...
Exam Review Sarah Diesburg Operating Systems CS 3430
... Exam Review Sarah Diesburg Operating Systems CS 3430 ...
... Exam Review Sarah Diesburg Operating Systems CS 3430 ...
lecture1
... written in assembly language. UNIX is nearly the unanimous choice of operating system for computer companies started since 1985. The user benefit which results from this is that UNIX runs on a wide variety of computer systems. Many traditional vendors have made UNIX available on their systems in add ...
... written in assembly language. UNIX is nearly the unanimous choice of operating system for computer companies started since 1985. The user benefit which results from this is that UNIX runs on a wide variety of computer systems. Many traditional vendors have made UNIX available on their systems in add ...
ppt - SERC
... Special OS support for program to specify objects that are to be in shared regions of address space Posix shared memory – shmget, shmat ...
... Special OS support for program to specify objects that are to be in shared regions of address space Posix shared memory – shmget, shmat ...
Threads, SMP, and Microkernels
... • Kernel can execute on any processor • Typically each processor does selfscheduling form the pool of available process or threads ...
... • Kernel can execute on any processor • Typically each processor does selfscheduling form the pool of available process or threads ...
ch18
... 3.0 released in 2011, 20th anniversary of Linux, improved virtualization support, new page write-back facility, improved memory management, new Completely Fair Scheduler ...
... 3.0 released in 2011, 20th anniversary of Linux, improved virtualization support, new page write-back facility, improved memory management, new Completely Fair Scheduler ...
Lecture 3: Concurrency
... – Internally concurrent because have to deal with concurrent requests by multiple users – But no protection needed within kernel ...
... – Internally concurrent because have to deal with concurrent requests by multiple users – But no protection needed within kernel ...
Processes
... ready and waiting to execute – Device queues – set of processes waiting for an I/O device – Waiting queues: The list of PCBs. Each PCB represents a “waiting” process who is waiting for termination of the child process or reception of a signal/message ...
... ready and waiting to execute – Device queues – set of processes waiting for an I/O device – Waiting queues: The list of PCBs. Each PCB represents a “waiting” process who is waiting for termination of the child process or reception of a signal/message ...
Computer Systems
... Multiprogramming organizes jobs (code and data) so CPU always has one to execute. A subset of total jobs in system is kept in memory. One job selected and run via job scheduling. When it has to wait, OS switches to another job. ...
... Multiprogramming organizes jobs (code and data) so CPU always has one to execute. A subset of total jobs in system is kept in memory. One job selected and run via job scheduling. When it has to wait, OS switches to another job. ...
Chapter 1: Introduction
... Many processes can run at once without performance deterioration true parallelism vs pseudo parallelism of a multitasking system on a uniprocessor. Most modern operating systems support SMP ...
... Many processes can run at once without performance deterioration true parallelism vs pseudo parallelism of a multitasking system on a uniprocessor. Most modern operating systems support SMP ...
NP11_IM_Chapter04
... A(n) ________ is a section of a hard disk drive that is treated as a separate storage unit. (Answer: disk partition.) True/False: The main directory is called the base directory. (Answer: False.) ___________ is usually measured in bytes, kilobytes, or megabytes. (Answer: File size.) ...
... A(n) ________ is a section of a hard disk drive that is treated as a separate storage unit. (Answer: disk partition.) True/False: The main directory is called the base directory. (Answer: False.) ___________ is usually measured in bytes, kilobytes, or megabytes. (Answer: File size.) ...
Real Time Operating Systems for IEC 61508 Mike Medoff
... and on-chip I/O devices via direct memory access (DMA), then these transactions are not protected by the MMU. If any of the I/O devices are safety critical, then the non safety critical applications either must not access these devices or additional protection measures will have to be added to the c ...
... and on-chip I/O devices via direct memory access (DMA), then these transactions are not protected by the MMU. If any of the I/O devices are safety critical, then the non safety critical applications either must not access these devices or additional protection measures will have to be added to the c ...
Processes and Process Control Blocks
... instance, a shared file), we must provide an environment to allow concurrent access to these types of resources. Computation speedup: If we want a particular task to run faster, we must break it into subtasks, each of which will be executing in parallel with the others. Such a speedup can be achie ...
... instance, a shared file), we must provide an environment to allow concurrent access to these types of resources. Computation speedup: If we want a particular task to run faster, we must break it into subtasks, each of which will be executing in parallel with the others. Such a speedup can be achie ...
Operating Systems 2230 Lecture 7: Uniprocessor scheduling
... Medium-term scheduling is really part of the swapping function of an operating system. The success of the medium-term scheduler is based on the degree of multiprogramming that it can maintain, by keeping as many processes “runnable” as possible. As we have seen, more processes can remain executable ...
... Medium-term scheduling is really part of the swapping function of an operating system. The success of the medium-term scheduler is based on the degree of multiprogramming that it can maintain, by keeping as many processes “runnable” as possible. As we have seen, more processes can remain executable ...
Operating Systems (Notes to prepare in 1 night before Exam)
... File System:5. File System is a method for storing and organizing computer files and the data they contain, to make it easy to find and access the. 6. It may use a data storage device such as hard disk or CD-ROM and involve maintaining the physical location of the files. 7. Mostly File System make u ...
... File System:5. File System is a method for storing and organizing computer files and the data they contain, to make it easy to find and access the. 6. It may use a data storage device such as hard disk or CD-ROM and involve maintaining the physical location of the files. 7. Mostly File System make u ...
Porting existing software - International Union of Crystallography
... are probably missing vital libraries, shared objects, and other bits and pieces necessary to run your code which you (a) didn't think were necessary (b) assumed were ubiquitous (c) hadn't even thought about They might be there, but are from an older/newer version of the operating system and are ther ...
... are probably missing vital libraries, shared objects, and other bits and pieces necessary to run your code which you (a) didn't think were necessary (b) assumed were ubiquitous (c) hadn't even thought about They might be there, but are from an older/newer version of the operating system and are ther ...
Communicating Sequential Processes
... declares an array of processes all with the same code but with different names (e.g., X(1), X(2),…, X(100)) Communication among processes in the array is facilitated by the use of input/output commands as illustrated in this code fragment: *[ (i:1..100)X(i)?(params) --> …; X(i)!(result) ] where the ...
... declares an array of processes all with the same code but with different names (e.g., X(1), X(2),…, X(100)) Communication among processes in the array is facilitated by the use of input/output commands as illustrated in this code fragment: *[ (i:1..100)X(i)?(params) --> …; X(i)!(result) ] where the ...
I/O Systems
... • Error detecting/correcting codes – e.g., Hamming code (separate lecture) • Retry operation, e.g. disk seek/read/write – Persistent HW errors: • Redundancy in storage media ...
... • Error detecting/correcting codes – e.g., Hamming code (separate lecture) • Retry operation, e.g. disk seek/read/write – Persistent HW errors: • Redundancy in storage media ...
PPT
... declares an array of processes all with the same code but with different names (e.g., X(1), X(2),…, X(100)) Communication among processes in the array is facilitated by the use of input/output commands as illustrated in this code fragment: *[ (i:1..100)X(i)?(params) --> …; X(i)!(result) ] where the ...
... declares an array of processes all with the same code but with different names (e.g., X(1), X(2),…, X(100)) Communication among processes in the array is facilitated by the use of input/output commands as illustrated in this code fragment: *[ (i:1..100)X(i)?(params) --> …; X(i)!(result) ] where the ...
ppt
... – Internally concurrent because have to deal with concurrent requests by multiple users – But no protection needed within kernel ...
... – Internally concurrent because have to deal with concurrent requests by multiple users – But no protection needed within kernel ...