All Questions
Tagged with javaperformance
8 questions
276votes
14answers
125kviews
Should we avoid object creation in Java?
I was told by a colleague that in Java object creation is the most expensive operation you could perform. So I can only conclude to create as few objects as possible. This seems somewhat to defeat ...
- 2,657
121votes
11answers
55kviews
What backs up the claim that C++ can be faster than a JVM or CLR with JIT? [closed]
A reoccurring theme on SE I've noticed in many questions is the ongoing argument that C++ is faster and/or more efficient than higher level languages like Java. The counter-argument is that modern JVM ...
- 3,566
60votes
18answers
86kviews
Why do people still say Java is slow? [closed]
For a long time in SO and in other places Java has the reputation of being slow. From jokes to many comments in questions and answers, people still believe Java is slow based solely on experience with ...
22votes
11answers
3kviews
Does low latency code sometimes have to be "ugly"?
(This is mainly aimed at those who have specific knowledge of low latency systems, to avoid people just answering with unsubstantiated opinions). Do you feel there is a trade-off between writing "...
- 1,479
71votes
3answers
34kviews
Is there a performance benefit to using the method reference syntax instead of lambda syntax in Java 8?
Do method references skip the overhead of the lambda wrapper? Might they in the future? According to the Java Tutorial on Method References: Sometimes... a lambda expression does nothing but call an ...
- 14.9k
25votes
6answers
6kviews
Why did the team at LMAX use Java and design the architecture to avoid GC at all cost?
Why did the team at LMAX design the LMAX Disruptor in Java but all their design points to minimizing GC use? If one does not want to have GC run then why use a garbage collected language? Their ...
user4626
23votes
4answers
10kviews
How to significantly improve Java performance?
The team over at LMAX have a presentation about how they were able to do 100k TPS at less than 1 ms of latency. They have backed up that presentation with a blog, technical paper (PDF) and the source ...
- 3,373
23votes
10answers
2kviews
How do I avoid "Developer's Bad Optimization Intuition"?
I saw on a article that put forth this statement: Developers love to optimize code and with good reason. It is so satisfying and fun. But knowing when to optimize is far more important. ...
- 507
