Performance Testing in Coding Stage Produces Better Quality Software: Report
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Performance Testing in Coding Stage Produces Better Quality Software: Report

CIO Review

FREMONT, CA:  Dedicated performance teams are more proficient in diagnosing, testing and correcting performance fixes, reports RebelLabs, the technical content and community site for developers sponsored by ZeroTurnaround.

The 2015 survey records participation from more than 1,500 software developers, architects, and managers across all industries, company sizes and geographic regions. The vast majority of respondents are software developers working on Web applications (70 percent), followed by desktop applications (11 percent), then batch (6 percent), other (9 percent) and mobile (4 percent). 

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Key Findings of the Survey:

The survey compared the activities of those respondents who claim their users are not affected by performance issues to those whose users are affected. It ended up with findings that the best performing teams are the teams with 30 percent fewer team members; happy teams with satisfied users are 36percent more likely to run performance testing while they code; small teams are 38 percent faster at diagnosing, fixing and testing performance issues; almost 40 percent of developers are more likely to profile on a daily or weekly basis; and are 20 percent less likely to test reactively when issues arise. 

The survey found that JProfiler and custom in-house tools find more performance issues than any other tools, followed by XRebel. Using a greater number of tools in total increases chances of finding more performance issues than sticking to just one.

As application complexity increases, the number of database query issues and HTTP session issues also increase. The survey concluded that profiling code frequently gives greater chance of performance boost, compared to profiling at a less regular interval.

Challenges in Performance Testing:

The most common root causes of performance issues are slow database queries, inefficient application code and excessive database queries. Almost half of the teams surveyed use multiple tools when testing, out of which 20 percent uses their own in-house tooling to run performance testing. The bulk of respondents, more than 75 percent, share that these performance issues directly impact the end-user experience and can lead to poor service levels, customer satisfaction and loss of sales.

"Each year we seek to identify what's really going on in the trenches of Java development -- what tools are being embraced, what hurdles are commonplace, what are cutting-edge organizations doing to optimize productivity and ensure quality software gets to market faster. This year we took a deep look at performance testing and found that profiling your code frequently will give you a greater chance of achieving a larger performance increase and using multiple tools will increase your chances of finding and resolving application performance issues," said Simon Maple, Java Champion and Developer Advocate, ZeroTurnaround.

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