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Why is Python slow
In case you missed it, Marius recently wrote a post on the Pyston blog about our baseline JIT tier. Our baseline JIT sits between our interpreter tier and our LLVM JIT tier, providing better speed…
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 423 posts.
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Does a compiler use all x86 instructions? (2010)
On the Z80 CPU there are so few registers and instructions that you can easily know and use them all and wish there were more of them. However, half of the time it feels like the only on you really use is ld. I imagine that if ld took half the number of clock cycles, average code would run twice as fast.
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How to do distributed locking
As part of the research for my book , I came across an algorithm called Redlock on the Redis website. The algorithm claims to implement fault-tolerant distributed locks (or rather, leases [1]) on top of Redis, and the page asks for feedback from people who are into distributed systems. The algorithm instinctively set…
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Haskell in the Datacentre
Bluesky: @simonmar.bsky.social Github: simonmar Email: marlowsd@gmail.com LinkedIn: Simon Marlow
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Building a Shop with Sub-Second Page Loads: Lessons Learned
Here is the story of how we leveraged research on web-caching and NoSQL systems to prepare a webshop for hundreds of thousands of visitors…
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The Ethernet PAUSE frame
This is a bizarre one. It all started when the internet seemed to go out at my house. My desktop, phone, TV, everything stopped working. The usual solution at a time like this is to power cycle the modem and router. While this fixed the situation temporarily, soon after the problem returned. What made me think this…
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Canonical releases Ubuntu 16.10
Ubuntu 16.10 released with Hybrid Cloud Operations and Unity 8 developer preview, from Canonical MAAS 2.0 delivers robust, highly-available IPAM and bare-metal provisioning Hybrid cloud operations with Juju 2.0 Developer preview of Unity 8 includes desktop, tablet and phone UX convergence OpenStack Newton with secure…
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Five Months of Kubernetes
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135M messages a second between processes in Java (2013)
Taking a lock free queue off heap and using it as an IPC mechanism to deliver 135M messages a second between processes in Java.
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Erlang 19.0 Garbage Collector
Each Erlang process has its own stack and heap which are allocated in the same memory block. When the stack and the heap meet, the garbage collector is triggered and memory is reclaimed. Find out more on our blog.
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Introduction to PostgreSQL physical storage
I initially wrote this post for myself, I wanted to understand enough about the underlying physical storage to be able to grasp other concepts which can affect your database. This post is probably more aimed to people with similar interests, I will try to keep it accurate but the aim is to make it simpler to…
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Rust and Nix = easier Unix systems programming
Lately I’m writing lots of Rust , and I’m particularly interested in systems programming on unix. I’ve been using and contributing to a library called nix 1 , whose mission is to provide ‘Rust friendly bindings to *nix APIs’.
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Why we use the Linux kernel's TCP stack
A recent blog post posed the question Why do we use the Linux kernel's TCP stack?. It triggered a very interesting discussion on Hacker News.
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GPL Violations Related to Combining ZFS and Linux
This post discusses an atypical GPL violation. Unlike most GPL violations Conservancy faces, in this case, a third-party entity holds a magic wand that can instantly resolve the situation. Oracle is the primary copyright holder of ZFS, and, despite nearly eight years (going back to the days of Sun's control of the…
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Spark as a Compiler: Joining a Billion Rows per Second on a Laptop
Discover how Apache Spark can join a billion rows per second on a laptop, showcasing its powerful data processing capabilities.
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SQL Server on Linux public preview
This post was authored by Tiffany Wissner, Senior Director of Data Platform Marketing Today, we are excited to announce the public preview of the next release of SQL Server on Linux and Windows, which brings the power of SQL Server to both Windows – and for the first time ever – Linux.
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64-bit ARM desktop hardware?
Soon there will be four years since I started working on AArch64 architecture. Lot of software things changed during that time. Lot in a hardware too. But machines availability still sucks badly. In 2012 all we had was software model. It was slow, terribly slow. Common joke was AArch64 developers …
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1000 nodes and beyond: updates to Kubernetes performance and scalability
Editor's note: this is the first in a series of in-depth posts on what's new in Kubernetes 1.2 We're proud to announce that with the release of 1.2, Kubernetes now supports 1000-node clusters, with a reduction of 80% in 99th percentile tail latency for most API operations. This means in just six months, we've…
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Beyond 10,000 Lines: Lessons Learned from a Large Phoenix Project
Lessons Learned from a Large Phoenix Project
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Automatically closing FIN_WAIT_2 is a violation of the TCP specification
I was asked to debug another weird issue on our network. Apparently every now and then a connection going through CloudFlare would time out with 522 HTTP error.