Top all-time · #1195
Klara Systems
Company blog · klarasystems.com/articles · on HN as allanjudesystems
Klara Systems is the company blog at klarasystems.com, writing about systems. Since 2020, 57 different Hacker News readers have linked it 156 times, most often “Virtualize Your Network on FreeBSD with VNET”. It is still writing: the last post was on 2026-10-28, and you can follow it by feed.
Partner with Klara for expert ARM, ZFS, and FreeBSD services. Build and manage scalable infrastructure with our open source solutions.
Most-linked posts?
- Virtualize Your Network on FreeBSD with VNET4 people · 5 mentions · first linked 2020-12-30
- Controlling Resource Limits with Rctl(8) in FreeBSD4 people · 4 mentions · first linked 2022-03-16
- Cluster Provisioning with Nomad and Pot on FreeBSD3 people · 3 mentions · first linked 2022-01-19
- History of FreeBSD – Part 2: BSDi and USL Lawsuits3 people · 3 mentions · first linked 2020-10-21
- Deep Diving into the Strengths of FreeBSD3 people · 3 mentions · first linked 2021-05-06
- OpenZFS – Understanding Transparent Compression3 people · 3 mentions · first linked 2020-09-04
- Virtualization Showdown: FreeBSD Bhyve vs. Linux KVM3 people · 3 mentions · first linked 2022-11-09
- /careers/openzfs-developer/2 people · 6 mentions · first linked 2024-12-02
- /articles/managing-boot-environments/2 people · 3 mentions · first linked 2023-03-26
- Understanding ZFS Channel Programs2 people · 2 mentions · first linked 2021-09-08
What Hacker News says?
I use it for simple tasks where spotting a mistake is easy. Like writing language binding for a REST API. It's a bunch of methods that look very similar, simple bodies. But it saves quite some work Or getting keywords to read about from a field I know nothing about, like caching with zfs. Now I know what things to put in google to learn more to get to articles like this one https://klarasystems.com/articles/openzfs-…
Comment linking /articles/openzfs-all-about-l2arc/
on “I Am Tired of AI”Submitted OpenZFS – dRAID, Finally as a story · 165 points
HN discussionKlara Systems | Technical Project Manager | US Remote | Full-time | $90k - $170k We are a bootstrapped, high growth company looking for a Technical Project Manager to help us scale more efficiently. About us: We focus on software development services for open source and community-driven software. We are a dynamic, high growth startup with marquee customers whose names you will recognize. Customers look to us because…
Comment linking /careers/technical-project-manager-open-source/
on “Ask HN: Who is hiring? (May 2024)”Submitted Demystifying OpenZFS 2.0 as a story · 159 points
HN discussionKlara Systems | ZFS Engineering Manager | US Remote | Full-time | $170k - $210k We are a bootstrapped, high growth company looking for a Engineering Manager to help us scale more efficiently. About us: We focus on software development services for open source and community-driven software. We are a dynamic, high growth startup with marquee customers whose names you will recognize. Customers look to us because of our…
Comment linking /careers/zfs-engineering-manager/
on “Ask HN: Who is hiring? (July 2024)”Submitted Migrate from Linux to FreeBSD as a story · 135 points
HN discussionKlara Inc | Fully Remote | Global | Full-time Contract Developer Klara Inc (klarasystems.com) provides development & solutions focused on open source software and the community-driven development of OpenZFS and FreeBSD. We develop new features, investigate/fix bugs, and support the community of these important open source infrastructure projects. Some of our recent work includes major ZFS features such as Linux Cont…
Comment linking /careers/openzfs-developer/
on “Ask HN: Who is hiring? (February 2025)”Submitted History of ZFS Part 2: Exploding in Popularity as a story · 134 points
HN discussion> 3. Rudimentary resource controls with no default enforcement (important!). Seems pretty extensive to me, including R/W bytes/s and R/W ops/s: * https://docs.freebsd.org/en/books/handbook/jails/#jail-resou... * https://klarasystems.com/articles/controlling-resource-limit... * https://man.freebsd.org/cgi/man.cgi?query=rctl
Comment linking /articles/controlling-resource-limits-with-rctl-in-freebsd/
on “Apple’s Darwin OS and XNU Kernel Deep Dive”Submitted Using the FreeBSD Rack TCP Stack as a story · 123 points
HN discussion> One counter-intuitive thing we found is that it's slow to save and restore caches, but the machines have good CPU, so for us it's been faster to disable cache entirely and just redo everything on each build. The link to SPDK was very interesting: https://www.ubicloud.com/blog/building-block-storage-for-clo... . I use filesystems for very high performance applications, and I've found ZFS to often be the limiting fa…
Comment linking /articles/virtualization-showdown-freebsd-bhyve-linux-kvm/
on “Show HN: Open-source x64 and Arm GitHub runners”Submitted Let’s Talk OpenZFS Snapshots as a story · 119 points
HN discussionKlara Systems | Technical Project Manager | US Remote | Full-time | $90k - $170k We are a bootstrapped, high growth company looking for a Technical Project Manager to help us scale more efficiently. About us: We focus on software development services for open source and community-driven software. We are a dynamic, high growth startup with marquee customers whose names you will recognize. Customers look to us because…
Comment linking /careers/technical-project-manager-open-source/
on “Ask HN: Who is hiring? (June 2024)”Submitted Deep Diving into the Strengths of FreeBSD as a story · 113 points
HN discussionKlara Inc | Fully Remote | Global | Full-time Contract Developer Klara Inc (klarasystems.com) provides development & solutions focused on open source software and the community-driven development of OpenZFS and FreeBSD. We develop new features, investigate/fix bugs, and support the community of these important open source infrastructure projects. Some of our recent work includes major ZFS features such as Linux Cont…
Comment linking /careers/openzfs-developer/
on “Ask HN: Who is hiring? (December 2024)”Submitted Evaluating FreeBSD Current for Production Use as a story · 97 points
HN discussionKlara Systems | Technical Project Manager | US Remote | Full-time | $90k - $170k We are a bootstrapped, high growth company looking for a Technical Project Manager to help us scale more efficiently. About us: We focus on software development services for open source and community-driven software. We are a dynamic, high growth startup with marquee customers whose names you will recognize. Customers look to us because…
Comment linking /careers/technical-project-manager-open-source/
on “Ask HN: Who is hiring? (April 2024)”Submitted Understanding ZFS Channel Programs as a story · 88 points
HN discussionSee special-vdev in this article. https://klarasystems.com/articles/openzfs-understanding-zfs-...
Comment linking /articles/openzfs-understanding-zfs-vdev-types/
on “Visualizing Ext4”Submitted Virtualize Your Network on FreeBSD with VNET as a story · 85 points
HN discussionklarasystems.com | OpenZFS Developer | REMOTE | Full-time Contract We successfully hired from HN in the previous round and are looking for another OpenZFS Developer (3+ years of experience) to join our team! Klara Inc. provides development & solutions focused on open source software and the community-driven development of OpenZFS and FreeBSD. We develop new features, investigate/fix bugs, and support the community o…
Comment linking /careers/openzfs-developer/
on “Ask HN: Who is hiring? (December 2025)”Submitted Exploring Swap on FreeBSD as a story · 80 points
HN discussionProbably not, but ZFS is actually smart enough to store the uncompressed version if compression doesn't save space. In other words: zfs will try lz4 compression on those video files, notice that it doesn't gain anything and store it uncompressed. [0] https://klarasystems.com/articles/openzfs1-understanding-tra...
Comment linking /articles/openzfs1-understanding-transparent-compression/
on “LZ4 – Extremely fast compression”Submitted Explaining top(1) on FreeBSD as a story · 71 points
HN discussionNo big fight, you just have to exclude the devices at boot so the vm can take them over [1] and if you have a AMD-System add that [2] and use the nvme virtual harddisk [3] [1] https://dflund.se/~getz/Notes/2024/freebsd-gpu/#bhyve-passth... [2] https://wiki.freebsd.org/bhyve/pci_passthru#Additional_Notes [3] Creating a Windows Server 2019 VM using vm-bhyve : https://klarasystems.com/articles/from-0-to-bhyve-on-freebs…
Comment linking /articles/from-0-to-bhyve-on-freebsd-13-1/
on “OpenBSD 7.8”Submitted Troubleshooting ZFS – Common Issues and How to Fix Them as a story · 69 points
HN discussionI agree a compositional/coordination cli tool is needed. However here are a few options: - FreeBSD style jails already offer docker config, but here is an article showing a few basic things going on, notably the Network Access section has a FIXME by it: https://bsdwatch.net/articles/jails-as-virtual-servers - For network isolation it looks like this package could help: https://klarasystems.com/articles/virtualize-yo…
Comment linking /articles/virtualize-your-network-on-freebsd-with-vnet/
on “Please don't upgrade Docker without asking first”Submitted FreeBSD Jobs: Arm Compiler and Toolchain Engineer as a story · 66 points
HN discussionI use FreeBSD on my machines because it has netgraph: https://klarasystems.com/articles/inside-freebsd-netgraph-ad...
Comment linking /articles/inside-freebsd-netgraph-advanced-networking/
on “Windows Subsystem for FreeBSD”Submitted NFS Shares with ZFS as a story · 57 points
HN discussion
