Recent questions tagged performance

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814 views

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performance - Checking response Time of API in iOS using Swift 3?

I know to test the response time of API is basically done by Server or Backend side, but as i am working for one ... ("Exception is there "} } } See Question&Answers more detail:os...

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

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782 views

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performance - Are write-combining buffers used for normal writes to WB memory regions on Intel?

Write-combining buffers have been a feature of Intel CPUs going back to at least the Pentium 4 and probably ... normal stores to WB memory? See Question&Answers more detail:os...

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

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749 views

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performance - Should I copy all my JavaScript sources into one single file?

In a current web project, I'm using several jQuery plugins and initializing them just before the closing body tag ... ? thanks for any feedback. See Question&Answers more detail:os...

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

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912 views

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performance - Any Faster RMS Value Calculation in C?

I am writing a software for a small 8-bit microcontroller in C. Part of the code is to read the ADC value ... any code that could run 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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864 views

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performance - javascript 'let' and 'var' in for-loops

On my search for concrete numbers to back usage of the const keyword in Javascript, I stumbled upon a performance ... case, I changed the test. See Question&Answers more detail:os...

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

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823 views

1 answer

performance - python bit array (performant)

I'm designing a bloom filter and I'm wondering what the most performant bit array implementation is in Python. The ... and | and << operations. See Question&Answers more detail:os...

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

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705 views

1 answer

performance - Do foreign key constraints influence query transformations in Oracle?

I have a situation like this: create table a( a_id number(38) not null, constraint pk_a primary key (id) ); create ... Oracle 11g (11.2.0.2.0) See Question&Answers more detail:os...

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

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1.3k views

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performance - Split a 3D numpy array into 3D blocks

I would like to split a 3D numpy array into 3D blocks in a 'pythonic' way. I am working with image sequences ... d)])) return np.vstack(rows) See Question&Answers more detail:os...

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

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771 views

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performance - rake assets:precompile taking extremely long to complete

In my dev sandbox RAILS_ENV=production rake assets:precompile is taking over 4 minutes to complete. Is this normal. On ... } #{context}" end end See Question&Answers more detail:os...

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

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727 views

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performance - What's the most efficient way to determine whether an untrimmed string is empty in C#?

I have a string that may have whitespace characters around it and I want to check to see whether it ... eleventy-billion reputation already. See Question&Answers more detail:os...

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

0 votes

762 views

1 answer

performance - Should I declare a java field 'final' when if it's not modified in code?

My question is mainly about performance. The compiler knows better that, for example, some variable is NOT modified ... Does it matter? Thanks, See Question&Answers more detail:os...

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

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776 views

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performance - Which is better: letting Java do autoboxing or using valueOf()

I am just wondering is there any difference in letting java autobox say an integer: Integer myInteger = 3; / ... any difference besides 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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891 views

1 answer

performance - Does this mean that Java Math.floor is extremely slow?

I don't Java much. I am writing some optimized math code and I was shocked by my profiler results. My code collects ... (15+ minutes so I quit). See Question&Answers more detail:os...

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

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806 views

1 answer

performance - PHP output buffering - sounds like a bad idea, is it?

Just want to pick the experts' brains on php output buffering. There are times when I've wanted to implement it for ... it. Am I way off here? See Question&Answers more detail:os...

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

0 votes

858 views

1 answer

performance - Why is this scala prime generation so slow/memory intensive?

I run out of memory while finding the 10,001th prime number. object Euler0007 { def from(n: Int): Stream[Int] = ... do you know of a better way? See Question&Answers more detail:os...

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

0 votes

993 views

1 answer

performance - Fast sqrt in Java at the expense of accuracy

I am looking for a fast square root implementation in Java for double values in the input range of [0, 2*10^12 ... .sqrt(). Any ideas? Thanks! See Question&Answers more detail:os...

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

0 votes

685 views

1 answer

performance - Swift Dictionary slow even with optimizations: doing uncessary retain/release?

The following code, which maps simple value holders to booleans, runs over 20x faster in Java than Swift 2 - XCode 7 beta3 ... = " + rate ); } See Question&Answers more detail:os...

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

0 votes

782 views

1 answer

performance - fast python numpy where functionality?

I am using numpy's where function many times inside several for loops, but it becomes way too slow. Are there any ... )]) for i in UNIQ_IDS)] See Question&Answers more detail:os...

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

0 votes

800 views

1 answer

performance - Is it better to poll or wait?

I have seen a question on why "polling is bad". In terms of minimizing the amount of processor time used ... is not necessarily 100% accurate. See Question&Answers more detail:os...

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

0 votes

748 views

1 answer

performance - fast python numpy where functionality?

I am using numpy's where function many times inside several for loops, but it becomes way too slow. Are there any ... )]) for i in UNIQ_IDS)] See Question&Answers more detail:os...

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

0 votes

802 views

1 answer

performance - Is it better to poll or wait?

I have seen a question on why "polling is bad". In terms of minimizing the amount of processor time used ... is not necessarily 100% accurate. See Question&Answers more detail:os...

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

0 votes

676 views

1 answer

performance - Swift Dictionary slow even with optimizations: doing uncessary retain/release?

The following code, which maps simple value holders to booleans, runs over 20x faster in Java than Swift 2 - XCode 7 beta3 ... = " + rate ); } See Question&Answers more detail:os...

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

0 votes

703 views

1 answer

performance - fast python numpy where functionality?

I am using numpy's where function many times inside several for loops, but it becomes way too slow. Are there any ... )]) for i in UNIQ_IDS)] See Question&Answers more detail:os...

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

0 votes

851 views

1 answer

performance - Is it better to poll or wait?

I have seen a question on why "polling is bad". In terms of minimizing the amount of processor time used ... is not necessarily 100% accurate. See Question&Answers more detail:os...

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

0 votes

652 views

1 answer

performance - Swift Dictionary slow even with optimizations: doing uncessary retain/release?

The following code, which maps simple value holders to booleans, runs over 20x faster in Java than Swift 2 - XCode 7 beta3 ... = " + rate ); } See Question&Answers more detail:os...

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

0 votes

775 views

1 answer

performance - fast python numpy where functionality?

I am using numpy's where function many times inside several for loops, but it becomes way too slow. Are there any ... )]) for i in UNIQ_IDS)] See Question&Answers more detail:os...

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

0 votes

742 views

1 answer

performance - Is it better to poll or wait?

I have seen a question on why "polling is bad". In terms of minimizing the amount of processor time used ... is not necessarily 100% accurate. See Question&Answers more detail:os...

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

0 votes

817 views

1 answer

performance - Why is this scala prime generation so slow/memory intensive?

I run out of memory while finding the 10,001th prime number. object Euler0007 { def from(n: Int): Stream[Int] = ... do you know of a better way? See Question&Answers more detail:os...

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

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