1981
A race condition in Aurora RDS
See how we diagnosed and confirmed an AWS Aurora RDS race condition impacting failovers.
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 6,942 posts.
1982
The One Billion Row Challenge in CUDA
On my journey to learn CUDA, I decided to tackle the One Billion Row Challenge with it.
1983
SSH quoting
A while back there was a thread on one of our company mailing lists about SSH quoting, and I posted a long answer to it. Since then a few people have asked me questions that caused me to reach for it, so I thought it might be helpful if I …
1984
With only free software, a Mali G31 chip can now run GNOME
With only free software, a Mali G31 chip can now run Wayland compositors with zero-copy graphics, including GNOME 3.
1985
Linux is an interpreter
And why you would want to exec a cpio
1986
Retrospectively Reverse-Engineering Apple's Neural Engine
I stopped working on the reverse-engineered Apple Neural Engine (ANE) driver three years ago, upon a sad mini realization that the ANE block is just not that useful, and I could be doing more useful things, and moved onto upstreaming other, more useful, blocks. The ANE's architecture was too opinionated to build a…
1987
Abusing Linux's firewall: the hack that allowed us to build Spectrum
Introducing Spectrum: a new Cloudflare feature that brings DDoS protection, load balancing, and content acceleration to any TCP-based protocol.Today we are releasing Spectrum.
1988
Anatomy of an ELF executable
Almost every one of you must have written a program, compiled it and then ran it to see the fruits of your hard labour. It feels good to finally see your program working, isn’t it? But to make all of this work, we have someone else to thankful too. And that is your compiler (of course, assuming that you are working in…
1989
IPv6 Is Hard
Yesterday I read this toot (German) over on mastodon which starts with “IPv6 is hard.” No it’s not. It’s different. I ran across this multiple times: There is an A and an AAAA-record for a FQDN, but the web server is only reachable via IPv4. You can easily test this with curl $ curl -4 https://github.com -o /dev/null…
1990
So You Want to Rust the Linux Kernel?
There has been much discussion of using the Rust language in the Linux kernel (for example, here , here , and here ), at the Kangrejos Rust for Linux Workshop ( here , here , and here ) and 2021 Linux Plumbers Conference had a number of sessions on this topic, as did Maintainers Summit . At least…
1991
Files Are Fraught with Peril
This is a psuedo-transcript for a talk given at Deconstruct 2019. To make this accessible for people on slow connections as well as people using screen readers, the slides have been replaced by in-line text (the talk has ~120 slides; at an average of 20 kB per slide, that's 2.4 MB. If you think that's trivial…
1992
Amazon EKS – Now Generally Available
We announced Amazon Elastic Kubernetes Service (Amazon EKS) and invited customers to take a look at a preview during re:Invent 2017. Today I am pleased to be able to let you know that EKS is available for use in production form. It has been certified as Kubernetes conformant, and is ready to run your existing […]
1993
1994
1995
Microsoft confirms Exchange Year 2022 problem
[German]Exchange servers (on-premises) have had woldwide a Year 2022 problem since January 1 (00:00 UTC), because mails are no longer transported due to a “date error”. Meanwhile…
1996
My VM is lighter and safer than your container
My VM is lighter (and safer) than your container Manco et al., SOSP’17 Can we have the improved isolation of VMs, with the efficiency of containers? In today’s paper choice the authors investigate …
1997
How SQLite scales read concurrency
Understanding how the write-ahead log turns your scaling up to 11.
1998
Good Retry, Bad Retry
Sometimes, a seemingly simple and obvious solution can lead to a series of problems later on. This is especially true when adding retries.
1999
Examining ARM vs. x86 Memory Models with Rust
With Apple’s recent announcement that they are moving away from Intel X86 CPU’s to their own ARM CPU’s for future laptops and desktops I thought it would be a good time to take a look at the some differences that can affect systems programmers working in Rust.
2000
The broad set of computer science problems faced at cloud database companies
A couple of weeks ago, I was in an internal meeting where our CTO (Adam Prout) was giving a talk to our summer interns. The talk was about the current state of database companies, and how different providers are competing on different facets of their products. As the talk was
2001
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…
2002
Paxos
Use two consensus building phases to reach safe consensus even when nodes disconnect
2003
2004
PostgreSQL 14 Internals book – Part II
I’m pleased to announce that Part II of the “ PostgreSQL 14 Internals ” book is available now. This part explores the purpose and design of the buffer cache and explains the need for write-ahead logging. Please download the book freely in PDF. There are three more parts to come, so stay tuned! Thanks to Matthew Daniel…
2005
2006
An update on Android's audio latency
News and insights on the Android platform, developer tools, and events.
2007
Linux When?
From the Zed Blog: In this episode of Zed Decoded, Thorsten talks to Mikayla, who's been leading the effort to Zed working on Linux, about the Zed's Linux version and how it's taking shape
2008
2009
How the JVM compares strings on x86 using pcmpestri
We’ve all probably seen Java’s String comparison function before. It compares strings by the first differing character, falling back to the length difference when they are identical up to the end of the shorter string:
2010
