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Grafana Tempo, a scalable distributed tracing system
Tempo is designed to be a robust trace id lookup store whose only dependency is object storage (GCS/S3).
New
The latest blog posts to take off on Hacker News. 2,560 posts.
1112
Fedora 33
Today, I’m excited to share the results of the hard work of thousands of contributors to the Fedora Project: our latest release, Fedora 33, is here! This is a big release with a lot of change, but I believe all that work will also make it a comfortable one, fulfilling our goal of bringing you […]
1113
ReactOS (Free and Open Source Windows): Jérôme Gardou hired to work full-time
ReactOS is a free, opensource reimplementation of windows
1114
Improving Postgres Connection Scalability: Snapshots
Improving connection scalability in Postgres 14. From the neat to the gritty: snapshot scalability edition.
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Porting Firecracker to a Raspberry Pi 4 (2019)
Since we got our hands on the new Raspberry Pi 4, we started exploring how various virtualization technologies behave on the board. First thing we tried is how to run Nabla on it and how it compares to native KVM. Next thing we wanted to try is firecracker, the notorious micro-VMM that Amazon Lambda & Fargate run…
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The Importance of End-to-End Thinking in System Design
I once attended a talk by Yoky Matsuoka when I was young – so young, in fact, that I don’t remember when or where the talk was. What I do remember is her telling the story of designing…
1118
BPF, XDP, Packet Filters and UDP
Documentation and guides from the team at Fly.io.
1119
NetBSD 9.1
After a small delay * , the NetBSD Project is pleased to announce NetBSD 9.1 , the first feature and stability maintenance release of the netbsd-9 stable branch.
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We spent two weeks hunting an NFS bug in the Linux kernel (2018)
Here's an in-depth recap of debugging a GitLab issue that culminated in a patch for the Linux kernel.
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A New Back End for Cranelift
This post will describe my recent work on Cranelift as part of my day job at Mozilla. In this post, I will set some context and describe the instruction selection problem. In particular, I’ll talk about a revamp to the instruction selector and backend framework in general that we’ve been working on.
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Chrome is deploying HTTP/3 and IETF QUIC
QUIC is a new networking transport protocol that combines the features of TCP, TLS, and more. HTTP/3 is the latest version of HTTP, the prot...
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Xen on Raspberry Pi 4
The Xen Project is excited to share that the Xen Hypervisor now runs on Raspberry Pi. This is an exciting step for both hobbyists and industries. Read more to learn about how Xen now runs on RPi and how to get started. Written by Stefano Stabellini and Roman Shaposhnik, originally
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Swift Atomics
I’m delighted to announce Swift Atomics, a new open source package that enables direct use of low-level atomic operations in Swift code. The goal of this library is to enable intrepid systems programmers to start building synchronization constructs (such as concurrent data structures) directly in Swift.
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From zero to main(): How to write a bootloader from scratch
A community and blog for embedded software makers
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Using time travel to remotely debug faulty DRAM
The story of debugging a mysterious Julia segfault.
1128
RTX3080 TensorFlow and NAMD Performance on Linux
The much anticipated NVIDIA GeForce RTX3080 has been released. How good is it with TensorFlow for machine learning? How about molecular dynamics with NAMD? I've got some preliminary numbers for you!
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Under Deconstruction: The State of Shopify’s Monolith
It’s been 18 months since we talked about our Rails modular monolith. We lay out the current state of the work, and things we’d do differently if we started again.
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What we learned after a year on Kubernetes
It's been one year since we moved GitLab.com to Kubernetes. We unpack the challenges and learnings from this major migration.
1131
Web Performance Profiling: Google.com
How is Google so fast? It’s so fast we take it for granted. It feels instant from the time you search to when results are displayed. What can we learn abou...
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GPUDirect Storage: A Direct Path Between Storage and GPU Memory
As AI and HPC datasets continue to increase in size, the time spent loading data for a given application begins to place a strain on the total application’s performance. When considering end-to-end…
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Is the web getting slower?
As consumer devices and internet speeds become faster, websites become larger and more complex. Is website performance getting worse overall?
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PostgreSQL B-Tree index deduplication
PostgreSQL 13 development is coming along nicely, Postgres 13 Beta3 was released on 8/13/2020 . The Postgres Beta 1 and 2 releases were released in May and June 2020. One of the features that has my interest in Postgres 13 is the B-Tree deduplication effort. B-Tree indexes are the default indexing method in Postgres…
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We Replaced an SSD with Storage Class Memory
MongoDB's blog includes technical tutorials, MongoDB best practices, customer stories, and industry news related to the leading non-relational database.
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Netflix is now doing per-shot encoding for UHD content
by Aditya Mavlankar, Liwei Guo, Anush Moorthy and Anne Aaron
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Chrome just got faster with Profile Guided Optimization
From the very beginning , we built Chrome to be the fastest browser possible. The faster Chrome is, the faster you find the information you ...
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Btrfs Coming to Fedora 33
The default filesystem will be BTRFS for Fedora 33 and onwards. Read more here about what that means for the Fedora community.
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Building resilient services at Prime Video with chaos engineering
Large-scale distributed software systems are composed of several individual sub-systems—such as CDNs, load balancers, and databases—and their interactions. These interactions sometimes have unpredictable outcomes caused by unforeseen turbulent events (for example, a network failure). These events can lead to…