performance

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago . Improve this question I want to run something like below code so that i would be able to find a divisor for numbers of ~30-40 length without having to check millions of possibilities even up to their square root. What is the fastest possible solution to find a legitimate non

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago . Improve this question I want to run something like below code so that i would be able to find a divisor for numbers of ~30-40 length without having to check millions of possibilities even up to their square root. What is the fastest possible solution to find a legitimate non

问题 After several searches, I cannot find a lock-free vector implementation. There is a document that speaks about it but nothing concrete (in any case I have not found it). http://pirkelbauer.com/papers/opodis06.pdf There are currently 2 threads dealing with arrays, there may be more in a while. One thread that updates different vectors and another thread that accesses the vector to do calculations, etc. Each thread accesses the different array a large number of times per second. I implemented a

问题 How to check which of the two DAX queries has a better performance using Daxstudio. In the example the queries return exactly the same results. However the stats differ showing not clear hints. What usuful information can we grasp from the comparison of the two queries? Comparison query stats summary: +-------------------------+------------+---------+---------+ | | | Query 1 | Query 2 | +-------------------------+------------+---------+---------+ | Server timings | Total | 7 | 5 | | | SE CPU

问题 I'm new to Google script. Anyone can give some advice how to improve the coding performance? If the numOfEmail variable is quite a huge number then the performance will slow down. for (var i = 0; i < numOfEmail; i++) { var messages=threads[i].getMessages(); for (var j = 0; j < messages.length; j++) { sheet.getRange("A"+(lastEntry+i)).setValue(messages[j].getId()); sheet.getRange("B"+(lastEntry+i)).setValue(messages[j].getDate()); sheet.getRange("C"+(lastEntry+i)).setValue(messages[j].getFrom(

问题 Does anyone know why is important to fix FOUT? Would fixing FOUT help with website performance? 回答1: Short Answer FOUT has no impact (a tiny rendering time impact) on performance in terms of load speed, it does affect user experience. Longer Answer A Flash of Unstyled Text (FOUT) itself doesn't affected performance, it is a consequence of Web Font performance. The browser loads it's default font and then when the webfont loads it swaps the new font in. As Web Fonts are normally relatively

问题 Greetings Overflowers, I need to query against objects with many/complex spacial conditions. In relational databases that is translated to many joins (possibly 10+). I'm new to this business and wondering whether to go with MS SQL Server 2008 R2 or Oracle 11g or document-based solutions such as RavenDB or simply go with some spacial database (GIS)... Any thoughts ? Regards UPDATE: Thank you all for your answers. Would anybody opt for document/spatial databases ? My database would consist of

问题 I'm containerizing a PHP application and would like to modify the Apache configuration based on environment variables. This is done in a script overriding the default ENTRYPOINT : FROM php:7.2-apache # ... COPY prepare-docker-configs.sh . RUN chmod +x prepare-docker-configs.sh ENTRYPOINT ./prepare-docker-configs.sh After those modifications, Apache doesn't start. apache2-foreground seems to be the missing command, so I run it at the end of prepare-docker-configs.sh #!/bin/bash # ... Some

问题 I'm containerizing a PHP application and would like to modify the Apache configuration based on environment variables. This is done in a script overriding the default ENTRYPOINT : FROM php:7.2-apache # ... COPY prepare-docker-configs.sh . RUN chmod +x prepare-docker-configs.sh ENTRYPOINT ./prepare-docker-configs.sh After those modifications, Apache doesn't start. apache2-foreground seems to be the missing command, so I run it at the end of prepare-docker-configs.sh #!/bin/bash # ... Some

问题 I want to understand the time information on the dumpsys gfxinfo log. It looks like this: Applications Graphics Acceleration Info: Uptime: 16264702 Realtime: 28169900 Can anyone tell me how to associate these figures with System.currentTimeMillis()? 回答1: From ActivityManagerService.java: long uptime = SystemClock.uptimeMillis(); long realtime = SystemClock.elapsedRealtime(); pw.println("Applications Graphics Acceleration Info:"); pw.println("Uptime: " + uptime + " Realtime: " + realtime);