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All posts in Performance

The price of dynamic memory: Allocation

The price of dynamic memory: Allocation

Posted on July 25, 2020August 28, 2020Author Ivica BogosavljevićPosted in PerformanceLeave a Reply

We talk about how to speed up your program if your program is taking time to allocate or release memory.

How branches influence the performance of your code and what can you do about it?

How branches influence the performance of your code and what can you do about it?

Posted on July 5, 2020December 31, 2020Author Ivica BogosavljevićPosted in PerformanceLeave a Reply

In this articles we investigate on how branches influence the performance of the code and what can we do to improve the speed of our branchfull code.

CPU Dispatching: Make your code both portable and fast

CPU Dispatching: Make your code both portable and fast

Posted on June 28, 2020June 28, 2020Author Ivica BogosavljevićPosted in PerformanceLeave a Reply

CPU dispatchingh is all about making your code portable and fast. We will talk about how to make your detect features your CPU has at is disposal and select the fastest function for that particular CPU without a need to recompile your software.

Make your programs run faster: avoid function calls

Make your programs run faster: avoid function calls

Posted on June 12, 2020August 29, 2020Author Ivica BogosavljevićPosted in PerformanceLeave a Reply

Function calls are not cheap operations and for time critical code it is better to avoid them. This article explores techniques you can use to avoid function calls thus speeding up your code.

FlameGraphs: Understand where your program is spending time

FlameGraphs: Understand where your program is spending time

Posted on June 6, 2020June 26, 2020Author Ivica BogosavljevićPosted in Developer Tools, PerformanceLeave a Reply

Learn about FlameGraphs, a great tool that will help you quickly find slow functions in your program.

Link Time Optimizations: New Way to Do Compiler Optimizations

Link Time Optimizations: New Way to Do Compiler Optimizations

Posted on May 27, 2020June 26, 2020Author Ivica BogosavljevićPosted in Memory Footprint, PerformanceLeave a Reply

Traditional compilation-linking cycle generates binaries that work fine, but in case you need more speed, you need to learn about link time optimizations. Here we talk about what link time optimizations are, how to enable them and what improvements to expect.

Make your programs run faster by better using the data cache

Make your programs run faster by better using the data cache

Posted on May 22, 2020July 4, 2020Author Ivica BogosavljevićPosted in PerformanceLeave a Reply

We investigate how the data cache influences the performance of your program, talk about ways for you to write faster programs by better leveraging the data cache.

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Recent posts

  • Flexibility and Performance
  • Speedscope: visualize what your program is doing and where it is spending time
  • Speeding up an Image Processing Algorithm
  • The true price of virtual functions in C++
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About me

Johny’s Software Lab LLC is a software development consulting house specializing in software performance. If you or your developer team needs help on how to make your C or C++ program run faster, or you are missing out important deadlines because of problems with performance, this is the right place to be.

Recent Posts

  • Flexibility and Performance
  • Speedscope: visualize what your program is doing and where it is spending time
  • Speeding up an Image Processing Algorithm
  • The true price of virtual functions in C++
  • 2-minute read: Class Size, Member Layout and Speed

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