processor

问题 How can I know in a C program, on which physical processor and core my code is running? I'm using Linux and gcc 4.4.3. 回答1: You may check /proc//stat file system, according to http://www.kernel.org/doc/Documentation/filesystems/proc.txt, you should just check task_cpu flag. As example without correct types and error checking: struct pstat { int pid; //process id char tcomm[256];//filename of the executable char state[2]; //state (R is running, S is sleeping, D is sleeping in an /

问题 How can I know in a C program, on which physical processor and core my code is running? I'm using Linux and gcc 4.4.3. 回答1: You may check /proc//stat file system, according to http://www.kernel.org/doc/Documentation/filesystems/proc.txt, you should just check task_cpu flag. As example without correct types and error checking: struct pstat { int pid; //process id char tcomm[256];//filename of the executable char state[2]; //state (R is running, S is sleeping, D is sleeping in an /

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I have a very large XML file which I need to transform into another XML file, and I would like to do this with XSLT. I am more interested in optimisation for memory, rather than optimisation for speed (though, speed would be good too!). Which Java-based XSLT processor would you recommmend for this task? Would

问题 I'd like to specify the cpu-affinity of a particular pthread. All the references I've found so far deal with setting the cpu-affinity of a process (pid_t) not a thread (pthread_t). I tried some experiments passing pthread_t's around and as expected they fail. Am I trying to do something impossible? If not, can you send a pointer please? Thanks a million. 回答1: This is a wrapper I've made to make my life easier. Its effect is that the calling thread gets "stuck" to the core with id core_id : //

问题 I have a computer with an 8-core processor, and I have a doubt about what's the max number of threads (software, don't thread of processor.) that my computer needs to use the max potencial of your 8-core. I'm creating 160 threads simultaneous, so each core of my processor will process about ~20 threads, is it correct? My questions are: 20 threads by core of processor is a good number? Independent the number of threads running, its will be divided equality by the number of cores? How to know

问题 When I change the value of max.delivery.attempts parameter in the WSO2 message processor and save changes. It always return to its default value of 4. I can change the value of other parameters without problem. My configuration is: Ubuntu 16.04 wso2 6.1.1 mysql 5 jdk 1.8.0_131 Does it happen to you? Thanks 回答1: Kindly Himasha notice me that it will be solved in next version https://github.com/wso2/product-ei/issues/1609 来源： https://stackoverflow.com/questions/47990476/wso2-esb-message

问题 Processing times for 5 processes were given. how will I find out the minimum average waiting time the processes have to wait in order to get executed if TWO PROCESSORS are given. 回答1: On any given processor, the total waiting time for an ordered set of processes taking time P 1 ..P N to complete is the total of individual elapsed times multiplied by the number of waiting processes remaining: (N - 1)P 1 + (N - 2)P 2 + ... + P N-1 . This reveals that waiting time is hit by a multiple of the

问题 I'm finishing up a project and a requirement is two-way handshaking between functional units inside our processor. I know what it is but is there any 'standard' or a good simple example of it? Only thing I can think of between two units, when there's a data-line between them and when X sends to Y, a separate 'sent' signal is given. When Y receives a 'received' signal is sent to X on another wire. Once X reads that received signal it stops sending data on the data-line and sets sent wire to 0

问题 How do I find out if my processor is 32 bit or 64 bit (in your language of choice)? I want to know this for both Intel and AMD processors. 回答1: Windows, C/C++: #include <windows.h> SYSTEM_INFO sysInfo, *lpInfo; lpInfo = &sysInfo; ::GetSystemInfo(lpInfo); switch (lpInfo->wProcessorArchitecture) { case PROCESSOR_ARCHITECTURE_AMD64: case PROCESSOR_ARCHITECTURE_IA64: // 64 bit break; case PROCESSOR_ARCHITECTURE_INTEL: // 32 bit break; case PROCESSOR_ARCHITECTURE_UNKNOWN: default: // something

问题 I have a number of questions about Intel PT (have been trying to decode the manual but is very difficult). My questions are: I am trying to find out if Intel PT can be disabled or reconfigured from within an OS, or, more generally, from within the system it is providing a trace of. Does Intel PT generate events on writes to specific registers - such as CR3, IDTR, etc Can Intel PT write values back to the system - i.e. can an external debugging machine actively perform writes to register,