TL;DR: The JVM exports statistics in a memory-mapped file in /tmp, causing long pauses during garbage collection on Linux due to blocking disk writes. Adding -XX:+PerfDisableSharedMem JVM flag can reduce pause latency, although it breaks tools like jstat. The root cause is rare blocking of memory writes due to Linux kernel behavior. A workaround is […]
Read more »
Selectable is a game-changer for accessing your Postgres database on the go. With a sleek mobile-optimized interface, you can effortlessly write and execute complex SQL queries without any hassle. This app brings the power of SQL right to your fingertips, allowing you to easily manage and analyze your data from anywhere. Get ready to revolutionize […]
Researchers from Delft University of Technology successfully manipulated the atomic nucleus of a single titanium atom, causing it to interact with an electron in the outer shell. This groundbreaking research, published in Nature Communications, holds promise for storing quantum information securely within the nucleus. The team discovered that the nucleus’ spin, or magnetism, can be […]
Summary: Sidekick is a new tool that streamlines the process of hosting side projects on a VPS, providing a simple and affordable solution for production-ready deployment. Key features include one-command VPS setup, zero downtime deployment, SSL certs, and integration with SOPS for secure encryption. Users can deploy any application from a dockerfile, connect domains, and […]
This post showcases intricate diatom arrangements, single-celled algae with glass shells that refract light beautifully under a microscope. These arrangements come in various shapes like triangles, circles, stars, and more, fascinating enthusiasts since the Victorian era. The meticulous process of collecting, cleaning, and arranging these tiny artworks can take days or weeks. Klaus Kemp, a […]
High-hazard activities depend on rules and procedures designed by system experts to ensure safety. However, gaps exist between planned work and actual work, requiring frontline workers to develop workarounds. Drift to danger, identified by researcher Jens Rasmussen, highlights the migration of organizations toward accidents due to cost pressures and a competitive environment. Major accidents, such […]
OpenNMS is a powerful open-source solution for visualizing and monitoring networks of any size. It offers fault, performance, and traffic monitoring all in one place, and is highly customizable and scalable. With the ability to handle up to 350,000 data points per second, OpenNMS is used by Fortune 500 companies across various sectors. It comes […]
Chili is a Rust port of Spice, a low-overhead parallelization library similar to rayon::join. It allows for running two closures in parallel at fork points during computation, ideal for scenarios with many small computations where estimating remaining work on a branch is costly. An example is provided for summing nodes in a binary tree in […]
Since the rollout of 5G networks in 2018 or 2019, the need for more base stations to support the higher frequencies required for faster connections has led Japanese companies to develop transparent glass antennas that turn windows into base stations. This innovative technology, created by AGC and NTT Docomo, offers a solution to the challenge […]
GitLab and others are affected by CVE-2024-45409, a new XML signature wrapping attack impacting the Ruby implementation of SAML. This vulnerability allows attackers to log in as any user in the system. XML signatures are complex and prone to bugs, leading to multiple attacks affecting a wide range of the internet. SAML, used for enterprise […]