Fixing production issues is one of the key responsibilities of system and network administrators. In fact, I’ve always found it to be one of the most interesting parts of infrastructure engineering. Diving as deep as needed into the problem at hand, not only do you (eventually) have the satisfaction of solving the…
USENIX LISA2021 Computing Performance: On the Horizon
In our 54th reading group meeting, we were looking for an answer to an important question in the distributed systems community: “What about Raft?” We looked at the “ Paxos vs Raft: Have we reached consensus on distributed consensus? ” paper to try to find the answer. As always, we had an excellent presentation, this…
We rendered the top 1 million pages on the web, tracking every conceivable performance metric, logging every error, noting every requested URL. To our knowledge this produces the first dataset that connects performance, errors, and library use on the web. In this article we analyze what the data can tell us about…
The detailed story of how to build a vector-based storage model from scratch.
rqlite is a lightweight, open-source, distributed relational database written in Go, which uses SQLite as its storage engine. v6.0.0 is out now and makes clustering more robust. It also lays the foundation for more important features. What's new in 6.0? 6.0 multiplexes multiple logical connections between rqlite nodes…
How APFS, the boot volume group, hashes, and Secure Boot all combine to guarantee the integrity of your system, and save you trouble and work.
Audio on Unix is a little zoo, there are so many acronyms for projects and APIs that it's easy to get lost. Let's tackle that issue! Most articles are confusing because they either use audio technical jargon, or because they barely scratch the surface and leave people clueless. A little knowledge can be dangerous.
Simplevisor : SimpleVisor is a simple, portable, Intel VT-x hypervisor with two specific goals: using the least amount of assembly code (10 lines), and having the smallest amount of VMX-related code to support dynamic hyperjacking and unhyperjacking (that is, virtualizing the host state from within the host). It runs…
Execute docker containers securely in a multi-tenant environment by combining the isolation level of VMs with the docker ecosystem.
How a mysterious stall in database queries uncovered a performance limitation with PostgreSQL.
I want to say a few words about my current adventure. I joined the Fuchsia project at its inception and worked on the daunting task of buil...
FOR IMMEDIATE RELEASE July 25, 2021 THE HAIKU PROJECT CELEBRATES THE RELEASE OF BETA 3 Poetry is in motion. The Haiku Project, its developers and team members announced the Haiku operating system released its third beta release, version R1/Beta3, …
The SiFive Performance P650 processor is expected to be the fastest licensable RISC-V processor IP core in the market, bringing RISC-V into new markets and applications, and will debut to lead partners in Q1 2022.
Introducing new no-cost RHEL programs for small production deployments and enterprise development teams.
I’ve been a NetBSD developer for three years and it’s been my primary operating system for a long time too - on everything: routers, laptops, Raspberry Pis, PowerPC mac minis, Vortex86 embedded boards, and servers.
Thomas Claiburn's FYI: Today's computer chips are so advanced, they are more 'mercurial' than precise – and here's the proof discusses two ...
In the course of trying to figure out how to smoothly zoom timelines of a billion trace events, I figured out a cool tree structure that I can’t find elsewhere online, which it turned out two of my friends have independently derived after not finding anything on their own searches. It’s a way of implementing an index…
Learn how audit tables helped us avoid a serious incident, and how you can create audit tables in your own Postgres databases.
Management of kernel extensions has changed significantly in Big Sur and later. This overview for users contrasts kexts with user-level extensions which are replacing them.
I needed to list all files in a directory, but ls , find , and os.listdir all hung. This is my story.
Now that I have your attention. I've been mulling TenFourFox's future for awhile now in light of certain feature needs that are far bigger ...
There has recently been some renewed discussion on Twitter about the limitation that the macOS sandbox places on the number of open files an app can access at once. Apps are still running into problems because of this limitation, and there is not a lot of technical detail available on it outside of Apple, so I’d like…
This is the story of how all non-admin users can read the registry — and so elevate privileges and access sensitive credential information…
The papers over the next few weeks will be from (or related to) research from VLDB 2021 - on the horizon is one of my favorite systems conferences SOSP . As always, feel free to reach out on Twitter with feedback or suggestions about papers to read! These paper reviews can be delivered weekly to your inbox , or you…
