processor

问题 I have been looking for a way to log all memory accesses of a process/execution in Linux. I know there have been questions asked on this topic previously here like this Logging memory access footprint of whole system in Linux But I wanted to know if there is any non-instrumentation tool that performs this activity. I am not looking for QEMU/ VALGRIND for this purpose since it would be a bit slow and I want as little overhead as possible. I looked at perf mem and PEBS events like cpu/mem-loads

问题 Is there a way to get the following information by using c# script. PC Name Service Tag CPU type CPU speed size of the c:\ drive, Installed RAM, OS name, OS Product Key, Office Version, and Office Product Key. Thanks. 回答1: WMI is what you're looking for. http://www.codeproject.com/KB/cs/EverythingInWmi02.aspx Let me add the link to Part 3 too, which concentrates on hardware via WMI http://www.codeproject.com/KB/cs/EverythingInWmi03.aspx MSDN is also a great resource for WMI scopes... http:/

问题 I understand that the processor brings data into the cache via cache lines, which - for instance, on my Atom processor - brings in about 64 bytes at a time, whatever the size of the actual data being read. My question is: Imagine that you need to read one byte from memory, which 64 bytes will be brought into the cache? The two possibilities I can see is that, either the 64 bytes start at the closest 64 bytes boundary below the byte of interest, or the 64 bytes are spread around the byte in

问题 Using Python is there any way to find out the processor information... (I need the name) I need the name of the processor that the interpreter is running on. I checked the sys module but it has no such function. I can use an external library also if required. 回答1: The platform.processor() function returns the processor name as a string. >>> import platform >>> platform.processor() 'Intel64 Family 6 Model 23 Stepping 6, GenuineIntel' 回答2: Here's a hackish bit of code that should consistently

问题 Using Python is there any way to find out the processor information... (I need the name) I need the name of the processor that the interpreter is running on. I checked the sys module but it has no such function. I can use an external library also if required. 回答1: The platform.processor() function returns the processor name as a string. >>> import platform >>> platform.processor() 'Intel64 Family 6 Model 23 Stepping 6, GenuineIntel' 回答2: Here's a hackish bit of code that should consistently

问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 7 years ago . I have to represent a binary number in floating point number. I have a hexadecimal number as FFFF, when I am converting this hexadecimal number into

问题 This question already has answers here : Closed 9 years ago . Possible Duplicate: CPU Usage using WMI & C# How to retrieve CPU usage % in C# (.NET) using WMI? Yes, without any stupid PerformanceCounter. 回答1: PerformanceCounter is a very low cost way of retrieving this info. As opposed to WMI which will give you the exact same info but with lots of overhead because it runs on top of COM. And it has the exact same problem as PC, which is why I'd guess you think it is 'stupid'. CPU usage percent

问题 I am trying to learn the usage of cache. From what I see by doing some sample experiment program, the time taken for execution of a program iterating through an array and doing some operations on the elements suddenly increases very much if I increase the array size beyond a particular value.Can anyone explain in simple terms how the cache size and array size affect the performance of mathematical operations on an array? 回答1: If the cache is not able to accumulate the array, any reference to

问题 I am using Visual Studio Community 15.7.5 and I have checked in my complete solution to github. It contains 3 projects, where one of them is using the google test framework. Additionally I am using the VS-extension "Google Test Adapter" from Christian Soltenborn. Now I want to be able to clone my solution from github to an arbitrarily place in my filesystem and be instant ready to compile and running all stuff inclusive the google tests WITHOUT modifying something at the solution-/project

问题 In a multi-processor architecture, how are registers organized? For example, in a 4 cores processor, a minimum of 4 processes can run at a time. How are stack pointer, program status registers and program counter organized? What about other general purpose registers? My guess is, each core will have a separate set of registers. 回答1: Imagine 4 completely separate computers, each with a single-core CPU. A 4-core computer is like that; except: All CPUs share the same physical address space (and