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The most popular blog posts about systems & performance on Hacker News. 4,387 posts.
Recently Ben Hoyt published a blog post claiming that contrary to popular belief, I/O is not the bottleneck in typical programming interview problems such as counting word frequencies from a stream. Sequential read speed has come a long way, while CPU speed has stagnated.
On Linux what can you turn into a file descriptor and then monitor with epoll?
File systems unfit as distributed storage backends: lessons from 10 years of Ceph evolution Aghayev et al., SOSP’19 Ten years of hard-won lessons packed into just 17 pages (13 if you don’t co…
Blog about network and security, showing example of Linux iptables and Snort configuration, and Windows security softwares.
In a quest to reduce the number of processes running in macOS Tahoe, consider the example of Time Machine backups, which can easily be replaced by 3rd party alternatives.
I bought a MacBook Air M2. As of writing, it's very affordable with the 16 GB RAM, 256 GB SSD, 13.6" model available for $750. As of writing, also Asahi Linux doesn't support anything newer than M2.
I often see code where authors abstract away details by placing them in some external function. Here is a toy example:
This one is going to be a quick one as there wasn't anything new discovered. In fact, I feel quite dumb. This is really a tale of " Do your research before acting and know what your goal is, " as you'll end up saving yourself a lot of time. Nobody likes throwing away work they've done either, and there could be…
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Millions of tiny databases, Brooker et al., NSDI’20 This paper is a real joy to read. It takes you through the thinking processes and engineering practices behind the design of a key part of …
Is a process named triald stealing lots of CPU? Or maybe ~/Library/Trial is huge, or filling your backups? Maybe it’s all just one of Apple’s Experiments.
Taking a lock free queue off heap and using it as an IPC mechanism to deliver 135M messages a second between processes in Java.
An in-depth look at Data-Oriented Architecture (DOA): monolithic data stores vs microservices, scaling benefits, and real-world case studies.
Remember when I blogged about linear read scalability out to 32 cores ? Well, the awesome Nate Boley provided me with access to his brand n...
I booted the arm64e kernel of macOS 11.0.1 beta 1 kernel in QEMU up to launchd. It’s completely useless, but may be interesting if you’re wondering how an Apple Silicon Mac will boot.
If we were to start over from first principles, what would I do differently than k8s?
I was running some benchmarks the other day. I usually have a lot of things running (Teams, Chrome, IDE, etc…) but I have to close everything to run some tight benchmarks. When I am done, one of th…
Configuring PipeWire to make laptop speakers sound better (Bankstown, Convolution/FIR, etc.)
First, I want to tell you how exactly I got to this point and why I started researching different options for handling asynchronous I/O on Linux… Last year, my students and I built a reverse proxy server called TinyGate. It was super simple, worker-based, and it basically worked well. Of course, I didn’t expect it to…
Go 1.26 made Green Tea the default GC. We observe its cache-friendliness with perf, visualize the heap to see how Go allocates, and poke at a sparse-page problem a non-moving collector like Go's struggles with.
BPF Performance Tools: Linux System and Application Observability (book)
Update: This article was discussed on Hackernews Much has been written and a lot of analysis performed on the global BGP table over the years, a significant portion by the inimitable Geoff Huston.
Hi there. I am going to post here thing about my work or my technical hobbies. This means c++, java, haskell, python, linux etc.
We’ve been using a Sony Vaio VGN-P588E for the past few months as our primary personal laptop. This thing’s great; it’s got a small but not uncomfortable keyboard. It’s got a trackpoint, which we absolutely need to keep our hands healthy. Crucially, it’s only 1.5 pounds. We’re disabled in a way that means we’ve got to…
I'm squarely in the trough of disillusionment with S3.
Placing an order and capturing a payment are really different actions. I also learned a lot in a few days.
