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Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 2,560 posts.
1922
FreeBSD 9.0-Release Announcement
The FreeBSD Release Engineering Team is pleased to announce the availability of FreeBSD 9.0-RELEASE. This is the first release from the stable/9 branch, which improves on stable/8 and adds many new features. Some of the highlights:
1923
Firefox Beta for Windows 10 on Qualcomm Snapdragon Now Available
Today, we’re excited to report the availability of our ARM64-native build of Firefox for Snapdragon-powered Windows 10 Always Connected PCs in our beta release channel, a channel aimed at developers or early tech adopters to test upcoming features before they’re released to consumers.
1924
Fix your damned data races
Nathan Froyd recently wrote about how he has been using ThreadSanitizer to find data races in Firefox, and how a number of Firefox developers — particular in the networking and JS GC teams — have been fixing these.
1925
Intelligent Kubernetes Load Balancing at Databricks
How Databricks uses client-side load balancing to improve gRPC traffic, reduce tail latency, and handle ingress with real-time service discovery.
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The ‘Backends for Frontends’ Pattern at SoundCloud
Our friends at SoundCloud embarked on a journey a few years ago that changed their system and moved it from a monolithic Rails application towards an ecosystem of microservices.
1927
Building Burstables: CPU slicing with cgroups
Burstable VMs run on a fraction of CPU and burst to a higher level of CPU usage to support occasional usage spikes. To implement them, we leveraged Control Groups v2 (cgroups v2), a Linux kernel feature that helps manage resource usage. We thought our open-source implementation of burstable VMs might be interesting…
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Principles of high-performance programs (2012)
This article is an attempt to sum up a small number of generic rules that appear to be useful rules of thumb when creating high performing programs. It is structured by first establishing some fundamental causes of performance hits followed by their extensions.
1929
Common interface for Linux NIC statistics
In Linux 5.13 ethtool gains an interface for querying IEEE and IETF statistics. This removes the need to parse vendor specific strings in...
1930
Negative Result: Reading Kernel Memory from User Mode
I were going to write an introduction about how important negative results can be. I didn’t. I assume you can figure out for yourself why that is and if not you got all the more reason to read this blog post. If you think it’s trivial why my result is negative, you definitely need to read the blog post.
1931
Sometimes CPU cores are odd
TL;DR: all the assumptions you have about processor design are wrong and if you are unlucky you will never run into problems that users do through sheer chance.
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Postgres Postmaster does not scale
Why Postgres postmaster contention becomes a bottleneck at scale, how connection bursts and worker churn trigger it, and which fixes helped in production.
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C++ Concurrency Model on x86 for Dummies (2020)
A blog by and for database architects.
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Virtually Unlimited Memory: Escaping the Chrome Sandbox
Posted by Mark Brand, Exploit Technique Archaeologist.IntroductionAfter discovering a collection ...
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A 5x reduction in RAM usage with Zoekt memory optimizations
Recently, we've been working to scale Sourcegraph cloud's index to 1 million open source repositories and beyond. Part of that effort has been reducing the RAM usage for the Zoekt (pronounced "zooked") servers responsible for handling most of our code searches.
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Exploring How Cache Memory Works
Even though we often hear terms like L1, L2, cache block size, etc., most programmers have a limited understanding of what cache really is. This is a beginner-friendly primer on how cache works.
1939
Sortix 1.0 Operating System Released
I'm happy to announce the release of Sortix 1.0. This is the first self-hosting and installable release.
1940
Do We Need Distributed Stream Processing?
In the era of big data and AI, many data-intensive applications exhibit requirements that cannot be satisfied by traditional batch processing models. Streaming applications, such as click stream analytics , IoT data processing, network monitoring , or financial fraud detection , must support high processing rates…
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Video Processing at Dropbox
Dash knows your context, your team, and your work, so your team can stay organized, easily find and share knowledge, and keep projects secure, all from one place.
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Fastest table sort in the West – Redesigning DuckDB's sort
DuckDB, a free and open-source analytical data management system, has a new highly efficient parallel sorting implementation that can sort much more data than fits in main memory.
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Don’t run this on any system you expect to be up they said, but we did it anyway
This is the story of how we upgraded over 2000 Ubuntu production servers – turning over millions an hour – by installing the operating system in memory, wiping the root disk and reinstalling the OS back on disk from RAM. We did it, there was zero data loss and it saved us lots of time and...
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Hitting Peak File IO Performance with Zig
This post goes through how to maximize file IO performance on linux using zig with io_uring.
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A crash course in just-in-time compilers (2017)
This is the second part in a series on WebAssembly and what makes it fast. If you haven’t read the others, we recommend starting from the beginning. JavaScript started out ...
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Postgres WAL Files and Sequence Numbers
Go inside the WAL file with this in-depth look at WAL file Log Sequence Number (LSN), WAL segment positions, WAL file names, and pg_switch_wal.
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