We investigate the topic of premature optimizations, or more specifically, in what cases you want to think early about performance.
All posts in C++ Performance
Flexibility and Performance
In this post we talk about how to write code that is both flexible and fast!
The true price of virtual functions in C++
We talk about virtual functions, and how the performance of software with virtual functions depends on many factors: the cost of additional instructions, cache misses, branch prediction misses, instruction cache misses and compiler optimizations.
2-minute read: Class Size, Member Layout and Speed
We are exploring how class size and layout of its data members affect your program’s speed
Talk: The Price of Dynamic Memory in C and C++
Ivica Bogosavljević from Johny’s Software Lab gave a talk on November 26th, 2020 as part of C++ User Group Osnabrück related to the performance price the developers pay when they are using dynamic memory in C and C++.
Excessive copying in C++ and your program’s speed
We talk about C++ and its weakness for temporary objects and excessive copying. We also give some tips on how to avoid them and make your program faster.
Process polymorphic classes in lightning speed
We investigate what is the best way to store polymorphic objects in a container for fast access
The price of dynamic memory: Memory Access
If your program uses dynamic memory, its speed will depend on allocation time but also on memory access time. Here we investigate how memory access time depends on the memory layout of your data structure. We also investigate ways to speed up your program by laying out your data structure optimally.
The price of dynamic memory: Allocation
We talk about how to speed up your program if your program is taking time to allocate or release memory.