... Why would DateTime.Now be made less precise than what most CPU clocks could handle? A good clock should be both precise and accurate; those are different. As the old joke goes, a stopped clock is exactly accurate twice a day, a clock a minute slow is never accurate at any time. Bu...

...lace a few static math functions with alternative implementations based on CPU intrinsics. One of those functions is Integer.numberOfLeadingZeros(). So with a 1.7 or newer server VM, a implementation like the one in the question is actually slightly faster than the binlog above. Unfortunatly the cli...

... sub, mul, div. e.g. add m[7] m[8] An Executing Agent: a core in a modern CPU. An "agent" is something that can execute instructions. An Agent can also be a person following the algorithm on paper. Order of steps: a sequence of instructions: i.e.: do this first, do this after, etc. An imperative se...

...than the main thread pool. If one has a lot of tasks to perform which are CPU intensive but won't block, it may be helpful to dispatch them using a pool of application threads (one per CPU core) which is separate from the "main" threadpool, since using more threads than cores will be counterprod

做 App 的时候，你一定会遇到这样一个问题：数据太多了，变量根本管不过来。 比如一个购物清单有 20 样商品，难道要建 20 个变量？一个用户通讯录有 100 条记录，难道要写 100 个变量？当然不用。列表（Lists） 就是帮你批量管...

... VM's, with no notion of "registers" like we're used to seeing in a modern CPU like the x86 or PowerPC. The evaluation of all expressions ((1 + 1) / 2) is performed by pushing operands onto the "stack" and then popping those operands off the stack whenever an instruction (add, divide, etc) needs to ...

...htop to see that with plain old sequential pandas dataframe.read_csv, 100% cpu on just one core is the actual bottleneck in pd.read_csv, not the disk at all. I should add I'm using an SSD on fast video card bus, not a spinning HD on SATA6 bus, plus 16 CPU cores. Also, another technique that I disc...

... responsiveness or server loading? should it use lots of memory or lots of CPU? C/c++ is used in just too many different circumstances. I suspect something like boost smart pointers will be enough for most users Edit - Automatic garbage collectors aren't so much a problem of performance (you can a...

... To be clear cores and threads are not the same thing. Depending on the CPU, there are a different number of threads per core, usually 2 per core. For example, if you have a 4 core CPU with 2 threads per core, then you have a max of 8 threads. To adjust @jKlaus comment var opts = new ParallelO...

... This code consumes a lot of CPU because the loop does not have a thread.sleep call in it. Without adding a small amount of delay this code tends to keep the CPU very busy. – ChaitanyaBhatt May 11 '17 at 22:31 ...