March 04, 2024

Troubleshooting Elixir Performance on Multi-Core Systems

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Source: reddit.com

The author, FundamentallyBouyant, describes a situation where an Elixir cluster deployed across about 10 EC2 instances is experiencing performance bottlenecks. Specifically, the machines host a large number of GenServers collectively reaching up to 2000 instances, all running on the same machine. Additionally, thousands of other processes are handling various I/O tasks like messaging with RabbitMQ, interfacing with Redis, and managing database connections. Despite the powerful hardware available, boasting 72-core CPUs and equal numbers of schedulers, the run queue lengths are rising into the thousands, and there are spikes in latencies. However, an interesting observation is that CPU usage remains around 50-60%, suggesting that computational resources are underutilized. The author is seeking advice on virtual machine parameter configurations to optimize performance for high CPU counts and is contemplating whether Elixir is suitable for such a setup. Fundamental questions being raised include potential VM tuning or whether the Elixir runtime may have limitations when operating on systems with a very high number of cores.

Issues with Elixir LiveView Polling Mechanism in Docker on Ubuntu Server

ekevu456 shares an issue encountered with an Elixir application using LiveView and Firestore. The application implements a polling mechanism that works in Docker on a local machine but fails to continue polling after the initial trigger on an Ubuntu server. The author seeks advice on the discrepancy and potential solutions.

Mar 04, 2024

Exploring Elixir Frameworks for Game Development and Simulations

double_skulls inquires about simple Elixir frameworks for developing cellular automata and simulations, akin to Python's pygame or Java's libgdx.

Mar 03, 2024

Choosing Between Elixir/Phoenix and Ruby on Rails for a Scientific Research Collaboration Platform

The author 'cashsterling' is considering different technology stacks for building a web MVP that serves as an open platform for scientific research collaboration. They are weighing the benefits of using Elixir/Phoenix versus Ruby on Rails or Django and are seeking advice on the matter.

Mar 02, 2024