illumos-gate
unix-v6
| illumos-gate | unix-v6 | |
|---|---|---|
| 36 | 5 | |
| 1,693 | 392 | |
| 1.4% | 4.3% | |
| 9.6 | 0.0 | |
| 6 days ago | almost 6 years ago | |
| C | C | |
| - | - |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
illumos-gate
- C stdlib isn't threadsafe and even safe Rust didn't save us
- Oxide Cuts Data Center Power Consumption in Half
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The Last Sun Sparc Workstation
It’s still going, in the form of Illumos: https://illumos.org/
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CVE-2023-2163: How we found and fixed an eBPF Linux Kernel Vulnerability
DTrace and eBPF are "not so different" in the sense that dtrace programs / hooks are also a form of low-level code / instruction set that the kernel (dtrace driver) validates at load. It's an "internal" artifact of dtrace though, https://github.com/illumos/illumos-gate/blob/master/usr/src/... and to my knowledge, nothing like a clang/gcc "dtrace target" exists to translate more-or-less arbitrary higher-level language "to low-level dtrace".
The additional flexibility eBPF gets from this is amazing really. While dtrace is a more-targeted (and for its intended usecases, in some situations still superior to eBPF) but also less-general tool.
(citrus vs. stone fruit ...)
- "Doors" in Solaris: Lightweight RPC Using File Descriptors (1996)
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What Is PID 0?
We can see it is called sched. Why sched? This article talked about the historic role of PID 0 in process swapping. Process swapping is a scheduling problem (like a lot of problems in software). This is why swappers are traditionally called medium-term or memory schedulers. Illumos generally gives most groupings of kernel worker threads their own processes with their own PIDs, but one, called "sched", remains in PID 0, and its responsibility? Process swapping:
https://github.com/illumos/illumos-gate/blob/579c23696ac6891...
The Wikipedia article has now been hastily edited, and replaces a claim that was true only of certain Unixes other than Linux with a claim true only of certain Unixes including Linux. Is this an improvement?
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eBPF Documentary
It may become a footnote on Linux, but Linux isn't the only system out there -- and DTrace remains alive and well in many systems (not least in its reference implementation in illumos[0]).
[0] https://github.com/illumos/illumos-gate
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Oxide Computer releases distribution of illumos intended to power the Oxide Rack
Nobody's paid to have it pass Open Group Unix Branding certification tests
https://www.opengroup.org/openbrand/register/
so it can't use the UNIX™ trade mark.
But it's got the AT&T Unix kernel & userland sources contained in it.
PDP-11 Unix System III: https://www.tuhs.org/cgi-bin/utree.pl?file=SysIII/usr/src/ut...
IllumOS: https://github.com/illumos/illumos-gate/blob/b8169dedfa435c0...
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In OpenZFS and Btrfs, everyone was just guessing
> it seems like this bug might actually date back to the very beginning of ZFS with Sun
Looks like you might be right about that. The oldest commit referenced in the fix [0] was from 2006[1], which was just months after Sun released ZFS.
[0] https://github.com/openzfs/zfs/pull/15571
[1] https://github.com/illumos/illumos-gate/commit/c543ec060d
- Getaddrinfo() on glibc calls getenv(), oh boy
unix-v6
- Unix Edition Zero
- Você pode pensar o Browser em desenvolvimento web como o Kernel é pro nativo
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The oldest software still used/maintained today that runs on GNU/Linux?
Here's the proof. https://github.com/memnoth/unix-v6/blob/master/source/s1/bc.y I'm going to try to see if this still compiles
- Do not use redirection characters in your shell prompt
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GNU Units
You are probably right.
The one in FreeBSD is from NetBSD: https://svnweb.freebsd.org/base/head/usr.bin/units/units.c?v...
The NetBSD version is from Adrian Mariano: http://cvsweb.netbsd.org/bsdweb.cgi/src/usr.bin/units/units....
The one in Plan9 is in yacc: http://9p.io/sources/plan9/sys/src/cmd/units.y
This GitHub repo claims to be V6: https://github.com/memnoth/unix-v6/blob/master/source/s2/uni...
What are some alternatives?
linux - Linux kernel source tree
pqm - Physical Quantities and Measures (PQM) is a Node and browser package for dealing with numbers with units
glibc - GNU Libc
UnitSystems.jl - Physical unit systems (Metric, English, Natural, Planck, etc...)
linux - Kernel source tree for Raspberry Pi-provided kernel builds. Issues unrelated to the linux kernel should be posted on the community forum at https://forums.raspberrypi.com/
gnu-units - GNU Units (mirror)
awesome-space - 🛰️🚀A list of awesome space-related packages and resources maintained by The Orbital Index
uom - Units of measurement -- type-safe zero-cost dimensional analysis
ipd - illumos Project Discussion
theme-bobthefish - A Powerline-style, Git-aware fish theme optimized for awesome.
orbiter - Open-source repository of Orbiter Space Flight Simulator
Unitful.jl - Physical quantities with arbitrary units