DJ Delorie

DJ Delorie's contributions

GNU C library
Article

The Non-complexity of /etc/nsswitch.conf

DJ Delorie

An overview of the current nsswitch.conf behavior and a request for input on the future behavior of the name services switch interface in glibc.

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Article

Microcontainers for Unit Testing

DJ Delorie

Containers offer new testing opportunities, especially for foundational system software like GLIBC or tests that depend on system changes for exercising code paths

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Article

Why you should care about RISC-V

DJ Delorie

If you haven't heard about the RISC-V (pronounced "risk five") processor, it's an open-source (open-hardware, open-design) processor core created by the University of Berkeley. It exists in 32-bit, 64-bit, and 128-bit variants, although only 32- and 64-bit designs exist in practice. The news is full of stories about major hardware manufacturers (Western Digital, NVidia) looking at or choosing RISC-V cores for their product. But why should you care? You can't just go to the local electronics boutique and buy a...

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Article

Malloc Internals and You

DJ Delorie

Introduction In my last blog, I mentioned I was asked to look at a malloc performance issue, but discussed the methods for measuring performance. In this blog, I'll talk about the malloc issue itself, and some measures I took to address it. I'll also talk a bit about how malloc's internals work, and how that affects your performance. First off, a bit of terminology - throughout this blog, these terms are defined to mean as follows... memory a region of...