The tag has no wiki summary.

learn more… | top users | synonyms

0
votes
1answer
168 views

Dual pivot quicksort in face of expensive swaps

I was told this is better place to ask this TLDR Has anyone tested dual pivot quicksort performance with expensive-to-swap elements? It seems that in this case, it should massively underperform ...
-1
votes
1answer
67 views

Huge long addition overhead compared to Native call?

A run a simple test JDK 1.7.0_45 (Windows 7, 64bit): Test 1: long start = System.nanoTime(); for (int i=0; i < 1000000; i++) { System.currentTimeMillis(); } elapsed = ...
1
vote
4answers
137 views

Track performance numbers

I have a (large) software project in a git repository. There is a benchmark suite that spits out lots of numbers (time per benchmark, allocations done per benchmark) I’d like to track. What is the ...
1
vote
1answer
1k views

Why execution time is different each time in java?

I am trying to make a program in Java which measure the complexity of a specific program with respect to its run time. Let's take a problem and code that problem in all possible ways with respect to ...
0
votes
1answer
81 views

What do I benchmark before updating a web site?

I am volunteering my time to update a website for a local business. The current website they have is not up to date and it fails quite a few "web tests". For example, the pages are too large, the ...
2
votes
0answers
177 views

Repeatability of CPU-intensive benchmarks on NUMA hardware

Consider a benchmark of a C++ application. It does little or no I/O in proportion to its overall runtime -- it is compute-intensive. It is a single-threaded program. It pages/reads in all of its data ...
9
votes
3answers
5k views

Fastest Functional Language

I've recently been delving into functional programming especially Haskell and F#, the prior more so. After some googling around I could not find a benchmark comparison of the more prominent functional ...
0
votes
0answers
112 views

Benchmarking ORM associations

I am trying to benchmark two cases of self referential many to many as described in datamapper associations. Both cases consist of an Item clss, which may require many other items. In both cases, I ...
4
votes
6answers
766 views

If python compiles to assembly and an OS is written in it, will it compete favorably with C in benchmarks?

Ok, I have used the word python in the question, but it well could be language agnostic in that: If a language X has a well optimised compiler targeting assembly and an OS is written in that language, ...
4
votes
2answers
694 views

How to test the render speed of my solution in a web browser?

Ok, I need to test the speed of my solution in a web browser, but I have some problems, there are 2 versions of the web solution, the original one that is on server A and the "fixed" version that is ...
4
votes
3answers
338 views

Is running “milli”-benchmarks a good idea?

I just came across the Caliper project and it looks very nice. Reading the introduction to microbenchmarks, one gets the feeling that the developers would not suggest to use the framework if the ...
3
votes
2answers
500 views

Is there a sample C project designed for comparing compiler output size?

I am about to start a new project and must choose a compiler. Because we are working in the embedded domain, one of the criteria that we are evaluating is the size of the output of the compiler. ...
4
votes
2answers
239 views

Benchmarking CPU processing power

Provided that many tools for computers benchmarking are available already, I'd like to write my own, starting with processing power measurement. I'd like to write it in C under Linux, but other ...
5
votes
1answer
161 views

Use of a profiler tool to aid in the analysis of a brute force algorithm in Java

I was asked to profile (using some tool, such as YourKit or JVisualVM) a couple of implementations of the Traveling Salesman Problem (find the minimum path that visits all the given set of cities), in ...
4
votes
3answers
601 views

Question about a “Benchmark” regarding Java and .NET

To get that out of the way - i am not asking about which platform is faster or try to start a flame war. Question: Why is the .NET version slower 5x in the first test ? The results i got were: .NET ...
9
votes
4answers
882 views

Benchmarking databases

I see lots of discussions flying around about performance of db 'x' or that moving from 'x' to 'y' improved our site performance. I'm yet to see proper benchmarking that works across different types ...
2
votes
3answers
1k views

Measures of Javascript engine performances over time?

Since the beginning of the Javascript race -- which I would situate around Google Chrome launch in 2008 -- the improvement in the Javascript engine performances have been impressive. The web is ...
5
votes
4answers
460 views

Does profiling without benchmarking lead to micro-optimization?

Read first: For a definition of the two terms ("profiling" and "benchmarking") and the need for distinguishing them, please read this answer to a previous question. I have to admit that until I saw ...
1
vote
1answer
160 views

benchmarks for quasi real-time software

I'm wondering if there is any benchmarks which can help to understand real-time characteristics (response time) of non-real-time software. For instance C# application on Windows or MSSQL Server. I ...
13
votes
3answers
4k views

Does anyone do hardware benchmarks on compiling code? [closed]

I've seen a bunch of sites that benchmark new hardware on gaming performance, zipping some files, encoding a movie, or whatever. Are there any that test the impact of new hardware (like SSDs, new ...
3
votes
2answers
291 views

What will be a good python script (or your favorite language goes here) to test a system's performance and capabilities?

Let's say you're in a computer store looking at 10 laptops, you want to really compare the system's capabilities. What will be an efficient "your fav language goes here" script that will allow you to ...
2
votes
2answers
226 views

Which benchmarking software would you use to evaluate the performance of your development rig?

I have been tasked with evaluating a new PC for our dev team that is spec'd only slightly better than our current models. Could anyone recommend appropriate benchmarking software that would be ...
3
votes
2answers
158 views

Do system background services affect languages benchmarking?

Today I was looking at some blogs on Ruby and Python. A Python loyalist wrote a few lines of code with a loop to show how Python is faster than Ruby, with a similar code. I also found a blog of a Ruby ...