Recent questions tagged Performance

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performance - Non HTTP response message: The target server failed to respond: Is my server failing to handle load

I have a prepared a jmx file using jmeter & ran that test case on blazemeter to test load on my server. ... handle to load. Thanks in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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623 views

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performance - Fastest way to sort vectors by angle without actually computing that angle

Many algorithms (e.g. Graham scan) require points or vectors to be sorted by their angle (perhaps as seen ... called pseudoangle by some. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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performance - Python copy larger file too slow

I am trying to copy a large file (> 1 GB) from hard disk to usb drive using shutil.copy. A simple ... free space even after copying test file. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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750 views

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performance - Benefits of using reserve() in a vector - C++

What is the benefit of using reserve when dealing with vectors. When should I use them? Couldn't find a clear ... say you people smarter than I? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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721 views

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performance - Fastest implementation of a true random number generator in C#

I was reading about Random.Next() that for "cryptographically secure random number suitable for creating a random ... get same results, ok? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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599 views

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performance - What's the quickest way to remove an element from a Map by value in Java?

What's the quickest way to remove an element from a Map by value in Java? Currently I'm using: DomainObj ... { map.remove(removalKey); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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performance - How can I disable Java garbage collector?

We have a PHP webapp that calls a Java binary to produce a PDF report (with JasperReports). The Java binary ... to see which performs faster.. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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725 views

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performance - Android java.lang.OutOfMemoryError?

04-25 08:19:10.111 2431-2603/com.example.francesco.guidedautorewithtabs E/art﹕ Throwing OutOfMemoryError "Failed to allocate ... ex){} } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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586 views

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performance - android - GC_FOR_ALLOC freed 6346K, 7% free , paused 143ms, total 143ms

I'm developing an offline mapView using OSMdroid Library. My tilesource loads the tiles but renders quit steadily. ... have any memory leaks? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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656 views

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performance - Fastest way to sort a python 3.7+ dictionary

Now that the insertion order of Python dictionaries is guaranteed starting in Python 3.7 (and in CPython ... collections.OrderedDict instead). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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733 views

1 answer

performance - If PostgreSQL count(*) is always slow how to paginate complex queries?

If PostgreSQL's count(*) is always slow how to paginate complex queries? Making triggers doesn't seem to be a ... use count(*) with postgresql? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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854 views

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performance - c++ : dynamic number of nested for loops (without recursion)

I'm writing a code segment that iterates through every permutation of n digits. So for example, if n = 3, ... What other alternatives do I have? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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665 views

1 answer

performance - CSS transform vs position

Can some please explain to me the difference in transitioning the positional left or right properties or the -transform ... the other? Thanks, p See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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605 views

1 answer

performance - Fastest way to sort 32bit signed integer arrays in JavaScript?

_radixSort_0 = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0 ... in useful info regarding spawning multiple windows for concurrency. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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550 views

1 answer

performance - Does "Avoid dependency injection frameworks" in the Android Memory Guide apply to Dagger as well?

So I have come across this best practices on Android articles on memory performance. http://developer.android.com/ ... one should I go for? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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677 views

1 answer

performance - Any way to further optimize Java reflective method invocation?

I am wondering if there are any additional optimizations I can implement to improve the speed of reflective invocations ... (but fast). Cheers. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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733 views

1 answer

performance - How to limit speed of internet connection on Android emulator?

I need to test app for work with slow internet connection. How to simulate slow internet connection on Android emulator? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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972 views

1 answer

performance - Speeding up element-wise array multiplication in python

I have been playing around with numba and numexpr trying to speed up a simple element-wise matrix multiplication. ... = numexprmult(a,a) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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711 views

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performance - How to find queries not using indexes or slow in mongodb

is there a way to find queries in mongodb that are not using Indexes or are SLOW? In MySQL that is ... 1 log_slow_queries = /tmp/slowmysql.log See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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969 views

1 answer

performance - How can WPF objects deriving from Freezable be frozen in XAML?

Many types in WPF derive from Freezable. It provides immutability to mutable POCO objects and allows for improved ... different question too). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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583 views

1 answer

performance - How to Reduce the time taken to load a pickle file in python

I have created a dictionary in python and dumped into pickle. Its size went to 300MB. Now, I want to load the ... file still takes a long time. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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672 views

1 answer

performance - Efficient data structure for word lookup with wildcards

I need to match a series of user inputed words against a large dictionary of words (to ensure the entered ... ! Thanks in advance, Matt See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

610 views

1 answer

performance - Fastest way to store easily editable config data in PHP?

What is the fastest way to store config data in PHP so that it is easily changeable (via PHP)? First I thought ... a better way to do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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738 views

1 answer

performance - C# .NET: How to check if we're running on battery?

i want to be a good developer citizen, pay my taxes, and disable things if we're running over ... (SM_REMOTESESSION) (archive.is) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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718 views

1 answer

performance - How to measure FPS on Android during app development

Is there a way (maybe some apps, hacks, libs) to measure frames per second (FPS) during app development for Android? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

602 views

1 answer

performance - Why is PHP apt for high-traffic websites?

I was surprised to learn today that PHP is used widely in high-traffic websites. I always thought that PHP is ... how come it performs so well? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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530 views

1 answer

performance - Is it better to use an exception or a return code in Python?

You may know this recommendation from Microsoft about the use of exceptions in .NET: Performance Considerations ... ... same for Python code? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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712 views

1 answer

performance - PHP: Fastest way to handle undefined array key

in a very tight loop I need to access tens of thousands of values in an array containing millions of ... higher script-languages like PHP. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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