performance

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 6 years ago . Improve this question I have basically two vectors one for a large number of elements and a second for a small number of probes used to sample data of the elements. I stumbled upon the question in which order to implement the two loops. Naturally I thought having the outer loop over the larger

问题 As per the documentation of docker. We can get CPU usage of docker container with docker stats command. The column CPU % will give the percentage of the host’s CPU the container is using. Let say I limit the container to use 50% of hosts single CPU. I can specify 50% single CPU core limit by --cpus=0.5 option as per https://docs.docker.com/config/containers/resource_constraints/ How can we get the CPU% usage of container out of allowed CPU core by any docker command? E.g. Out of 50% Single

问题 I need to make Tasks run faster, I tried to use semaphore, parallel library and threads(tried to open one for every work, I know its the most dumb thing to do), but none of them show the performance I need. I'm not familiar to work with thread stuff and I need some help to find the right way and understand how Task and Threads work. Here is the function: public class Test { public void openThreads() { int maxConcurrency = 500; var someWork = get_data_from_database(); using (SemaphoreSlim

问题 Assuming I have n = 3 lists of same length for example: R1 = [7,5,8,6,0,6,7] R2 = [8,0,2,2,0,2,2] R3 = [1,7,5,9,0,9,9] I need to find the first index t that verifies the n = 3 following conditions for a period p = 2 . Edit: the meaning of period p is the number of consecutive "boxes". R1[t] >= 5, R1[t+1] >= 5 . Here t +p -1 = t+1 , we need to only verify for two boxes t and t+1 . If p was equal to 3 we will need to verify for t , t+1 and t+2 . Note that It's always the same number for which

问题 Assuming I have n = 3 lists of same length for example: R1 = [7,5,8,6,0,6,7] R2 = [8,0,2,2,0,2,2] R3 = [1,7,5,9,0,9,9] I need to find the first index t that verifies the n = 3 following conditions for a period p = 2 . Edit: the meaning of period p is the number of consecutive "boxes". R1[t] >= 5, R1[t+1] >= 5 . Here t +p -1 = t+1 , we need to only verify for two boxes t and t+1 . If p was equal to 3 we will need to verify for t , t+1 and t+2 . Note that It's always the same number for which

问题 I have a javascript function which contains another javascript function inside (closure) function function1() { $("button").bind("click", function () { function2(); }); function function2() { // code }; }; My question: When i call function1() for many times, does the function2() gets created each time (and saved in memory)? or it is shared? function1 is not used as a constructor, so i don't think i should use prototype 回答1: Yes, function2 would be created each time function1 is executed,

问题 I have two large .csv files that I've imported using the import-csv cmdlet. I've done a lot of searching and trying and am finally posting to ask for some help to make this easier. I need to move through the first array that will have anywhere from 80k rows to 500k rows. Each object in these arrays has multiple properties, and I then need to find the corresponding entry in a second array of the same size matching on a property from there. I'm importing them as [systems.collection.arrayList]

问题 I have two large .csv files that I've imported using the import-csv cmdlet. I've done a lot of searching and trying and am finally posting to ask for some help to make this easier. I need to move through the first array that will have anywhere from 80k rows to 500k rows. Each object in these arrays has multiple properties, and I then need to find the corresponding entry in a second array of the same size matching on a property from there. I'm importing them as [systems.collection.arrayList]

问题 In JavaScript, it is possible to declare multiple variables like this: var variable1 = "Hello, World!"; var variable2 = "Testing..."; var variable3 = 42; ...or like this: var variable1 = "Hello, World!", variable2 = "Testing...", variable3 = 42; Is one method better/faster than the other? 回答1: The first way is easier to maintain. Each declaration is a single statement on a single line, so you can easily add, remove, and reorder the declarations. With the second way, it is annoying to remove

问题 I need the element.clientHeight and element.offsetHeight of an HTMLElement, but calculating it is very slow, and especially, it takes for about 3 seconds my long element that we can scroll on! Is there a fast alternative to these two? getBoundingClientRect() does not work and it has the same performance. Similar question: text editor in textarea SLOW - javascript It seems for the elements doesn't automatically grow, this calculation is very slow. 来源： https://stackoverflow.com/questions