GoKawiilMeta recognizes the long-term benefits of jemalloc, a high-performance memory allocator, in its software infrastructure.
We are renewing focus on jemalloc, aiming to reduce maintenance needs and modernize the codebase while continuing to evolve the allocator to adapt to the latest hardware and workloads.
We are committed to continuing to develop jemalloc development with the open source community and welcome contributions and collaborations from the community.
Building a software system is a lot like building a skyscraper: The product everyone sees is the top, but the part that keeps it from falling over is the foundation buried in the dirt and the scaffolding hidden from sight.
jemalloc, the high performance memory allocator, has consistently been a highly-leveraged component within our software stack, adapting over time to changes in underlying hardware and upper-layer software. Alongside the Linux kernel and the compilers, it has delivered long-term benefits to Meta, contributing to a reliable and performant infrastructure.
Listening, Reflecting, and Changing
High leverage comes with high stakes. On the spectrum of practical versus principled engineering practice, foundational software components like jemalloc need the highest rigor. With the leverage jemalloc provides however, it can be tempting to realize some short-term benefit. It requires strong self-discipline as an organization to resist that temptation and adhere to the core engineering principles.
In recent years, there has been a gradual shift away from the core engineering principles that have long guided jemalloc’s development. While some decisions delivered immediate benefits, the resulting technical debt eventually slowed progress.
We took the community’s feedback to heart. In the spirit of collaboration, we have reflected deeply on our stewardship and its impact on jemalloc’s long-term health. As we’ve met with some members of the community, including the project’s founder, Jason Evans, to share our introspection and how we are changing our approach. We’ve started an effort to remove technical debt and rebuild a long-term roadmap for jemalloc.
A New Chapter for jemalloc
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