Questions related to improving application performance, this can be range from selection software architecture to selection of algorithms.

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2
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1answer
67 views

Caching in '3D' - data-structures and octree recursion - hrrm!

The Situation: I have 68GB of data that is conceptually realized as a 3D matrix of 8-bit values with dimension 4096*4096*4096. I need to access multiple sections of this data for processing in a ...
2
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5answers
4k views

PHP email blasts using a cron job [closed]

My PHP application needs to send product expiry notifications to customers everyday. I am thinking of: A one-time cron job for a php script that identifies the customers from a table of 10000 rows ...
1
vote
1answer
78 views

Clairvoyance in caching - optimal strategies?

This question relates to the question here, but I'll generalise it so that you can answer effectively without reading all of that. Context: Imagine you had a large set of data greater than your ...
0
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1answer
953 views

Most efficient multiple condition IF statement

I am using a function to compare over 100 variables inside of classes to each other an am curious if one method of comparing multiple condition statements is more efficient than another. I am ...
14
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3answers
1k views

What makes a large and complex software product slow? [closed]

For a reason that is largely irrelevant, I installed Delphi 7 once again in such a long time. I have to say, I was completely blown away - in a way I haven't been for rather a while. This is not how I ...
12
votes
7answers
518 views

How long can it take for a screen to appear before it's considered a performance issue?

I am involved with the development of a Windows application that has various screens. One of them takes ten seconds to appear with no spinner or other indication that the screen is loading. I consider ...
10
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10answers
516 views

How to communicate with a co-worker that considers frameworks a performance hit

How can one sell an idea like "we should use jQuery because its highly optimized and cross browser compatible" or "entity framework is cool because its neat and takes care of our model automagically" ...
9
votes
5answers
903 views

How much redundancy/robustness should complex software implement?

The focus of this question: Some software performs "extra work" in order to increase the chance of a "eventually successful/satisfactory" outcome, despite one or more internal errors in the software, ...
7
votes
7answers
1k views

Should I charge a client for mistakes that I made? [duplicate]

After developing a website for a client, I've realized that the load time is too extreme, and some changes need to be made. The extreme load times are attributed to the bloated css/js frameworks that ...
5
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1answer
1k views

Coded ui to measure performance

I have been tasked with using coded UI to measure performance on a proprietary windows desktop application. The need is to measure how long it takes for the next page/screen to display after a user ...
2
votes
5answers
457 views

What are good practices to perform software based optimization?

On a project that I am working on we encountered some performance problems. We decided to drop hibernate in favor of plain Jdbc to gain database performance. By converting our code to Jdbc we ...
2
votes
3answers
2k views

Does mobile based (Android) development, benefit from Object Oriented Programming?

My development on Android is based on scientific programs and while I'm building these most of the code is in one or two long classes. When I come to deploy these programs I try to decouple everything ...
2
votes
4answers
3k views

How do I speed up XML parsing operation?

I currently have a php script set up to do some xml parsing. Sometimes the script is set as an on page include and other times it is accessed via an ajax call. The problem is the load time for this ...
1
vote
4answers
751 views

List comparing techniques for faster performance

I need to cross names from two lists, and find all occurrences of one name in the other. The lists are too big, one have 50k elements and the other 400k. For a small list I would use two foreach ...
1
vote
4answers
791 views

Database in the cloud?

Some of my recent clients are asking for remote connections to the office server, for standalone work, etc, in winForm applications. Since the concept of the web is remote connection to a server both ...
0
votes
3answers
139 views

What is the explication for the difference execution time for the same instruction?

As you know when we run instruction in our code like long a = b; we will not have the same ticks each to be executed. first exeution it take 2ticks; second exeution it take 3ticks; third exeution it ...