Featured image for: SCTP over UDP in the Linux kernel.

Frame pointers: Untangling the unwinding

Picture of the writer, wearing a red hat and a covid mask, revealing almost nothing of his face Guinevere Larsen

Explore how frame pointers can be used to unwind Linux kernel stack traces and examine different ways to obtain a backtrace, along with their pros and cons.

Featured image for Valgrind.

How to use Valgrind to track file descriptors

Mark Wielaard

Valgrind can be used to track file descriptors. Learn how to find file descriptors at various stages of your program and where they were originally opened.

Featured image for: Mostly harmless: An account of pseudo-normal floating point numbers.

How I developed a faster Ruby interpreter

Vladimir Makarov

Learn about 8 optimization techniques for a faster interpreter in Ruby which I developed using a dynamically specialized internal representation (IR).

Featured image for: Value range propagation in GCC with Project Ranger.

GCC's new fortification level: The gains and costs

Siddhesh Poyarekar

Discover the gains and costs of GCC’s enhanced runtime buffer overflow protection. Level 3 _FORTIFY_SOURCE preprocessor macro may detect more buffer overflows, but there’s a cost.

Reliability Nightmares share image(2000x1000)

Reliability Nightmares: The Coloring Book

Máirín Duffy + 4

See site reliability engineering (SRE) principles in action and learn how to improve the operability of your code base with this developer coloring book.

Responsive Web Design image

Creating A Better Responsive Design in Web Development

Harshit Prasad Harshit Prasad

A better responsive design nowadays becoming a challenge. To become a good competitor in the market, one should make their website UI design such that: It should be eye-catching for the users on the first-time visit to the website. Rather than having complex UI features, it should be easy to use with simple UI features. Developers should be more oriented towards the material design. Material design is currently the most popular front-end design trending. To make the website a better...

Article Thumbnail

Understanding malloc behavior using Systemtap userspace probes

Siddhesh Poyarekar

The malloc family of functions are critical for almost every serious application program. Its performance characteristics often have a big impact on the performance of applications. Given that the default malloc implementation needs to have consistent performance for all general cases, it makes available a number of tunables that can help developers tweak its behavior to suit their programs. About two years ago I had written an article on the Red Hat Customer Portal that described the high level design...

Article Thumbnail

Red Hat Enterprise Linux 7 toolchain a major performance boost for C/C++ developers

Matt Newsome

Now that Red Hat Enterprise Linux 7 is publicly available , we thought RHEL application developers would be interested in seeing how the new C/C++ toolchain compares to the equivalent in Red Hat Enterprise Linux 6 in terms of raw performance. The numbers are pretty surprising so stay tuned. But first, a little introduction to set the scene. Red Hat Enterprise Linux 6 GCC Red Hat Enterprise Linux 6 shipped in November 2010 with gcc-4.4. As with all major new...