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962e7855c5
Empirically, every single push or PR has to download *and then upload* about 3.6 GiB of "cache stuff", which takes up about 400 seconds: https://travis-ci.com/github/SerenityOS/serenity/builds/177500795 On every single push/PR! No matter what! Those 3.6 GB consist of: - 3.2 GB Toolchain cache (around 260 MB per compressed item) - 0.4 GB ccache, but is capped at 0.5 GB: https://travis-ci.com/github/BenWiederhake/serenity/builds/177528549 - (And 200 KB for some weird debian package? Dunno.) Investigating in the size, the Toolchain consists mostly of *DEBUG SYMBOLS IN THE COMPILER BINARIES* which comically misses the point. If we ever run into compiler crashes, any stacktrace would be lost anyway as soon as the Travis VM shuts down. Furthermore, Travis will only ever compile Serenity itself, and Serenity forbids C in it's Contribution Guidelines. That's another 20 MB we don't need to cache. Stripping the binaries and deleting the C compiler reduces the uncompressed size from 1200 MB down to 220 MB. The compressed size gets reduced from 260 MB to 70MB. That's a reduction of 73%. It'll take a while until the 'old' toolchains get deleted. I guess it'll take less than a week. From that point onward, the Travis cache will be 1.2 GB, consisting of: - 0.7 GB Toolchain cache - 0.5 GB ccache - (And that weird 200 KB deb file) If network speeds are linear, then this should reduce the "cache network overhead time" from about 400 seconds to about 120 seconds. tl;dr: Strip unnecessary debug infos, delete an unused files, and speed everything up by two minutes. (Both Toolchain cache hits and Toolchain rebuilds!) |
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SerenityOS
Graphical Unix-like operating system for x86 computers.
About
SerenityOS is a love letter to '90s user interfaces with a custom Unix-like core. It flatters with sincerity by stealing beautiful ideas from various other systems.
Roughly speaking, the goal is a marriage between the aesthetic of late-1990s productivity software and the power-user accessibility of late-2000s *nix. This is a system by us, for us, based on the things we like.
I (Andreas) regularly post raw hacking sessions and demos on my YouTube channel.
Sometimes I write about the system on my github.io blog.
I'm also on Patreon and GitHub Sponsors if you would like to show some support that way.
Screenshot
Kernel features
- x86 (32-bit) kernel with pre-emptive multi-threading
- Hardware protections (SMEP, SMAP, UMIP, NX, WP, TSD, ...)
- IPv4 stack with ARP, TCP, UDP and ICMP protocols
- ext2 filesystem
- POSIX signals
- Purgeable memory
- /proc filesystem
- Pseudoterminals (with /dev/pts filesystem)
- Filesystem notifications
- CPU and memory profiling
- SoundBlaster 16 driver
- VMWare/QEMU mouse integration
System services
- Launch/session daemon (SystemServer)
- Compositing window server (WindowServer)
- Text console manager (TTYServer)
- DNS client (LookupServer)
- Network protocols server (ProtocolServer)
- Software-mixing sound daemon (AudioServer)
- Desktop notifications (NotificationServer)
- HTTP server (WebServer)
- Telnet server (TelnetServer)
- DHCP client (DHCPClient)
Libraries
- C++ templates and containers (AK)
- Event loop and utilities (LibCore)
- 2D graphics library (LibGfx)
- GUI toolkit (LibGUI)
- Cross-process communication library (LibIPC)
- HTML/CSS engine (LibWeb)
- JavaScript engine (LibJS)
- Markdown (LibMarkdown)
- Audio (LibAudio)
- PCI database (LibPCIDB)
- Terminal emulation (LibVT)
- Out-of-process network protocol I/O (LibProtocol)
- Mathematical functions (LibM)
- ELF file handing (LibELF)
- POSIX threading (LibPthread)
- Higher-level threading (LibThread)
- Transport Layer Security (LibTLS)
- HTTP and HTTPS (LibHTTP)
Userland features
- Unix-like libc and userland
- Shell with pipes and I/O redirection
- On-line help system (both terminal and GUI variants)
- Web browser (Browser)
- C++ IDE (HackStudio)
- IRC client
- Desktop synthesizer (Piano)
- Various desktop apps & games
- Color themes
How do I read the documentation?
Man pages are browsable outside of SerenityOS under Base/usr/share/man.
When running SerenityOS you can use man for the terminal interface, or help for the GUI interface.
How do I build and run this?
See the SerenityOS build instructions
Before opening an issue
Please see the issue policy.
Wanna chat?
Come hang out with us in #serenityos on the Freenode IRC network.
Author
- Andreas Kling - awesomekling
Contributors
- Robin Burchell - rburchell
- Conrad Pankoff - deoxxa
- Sergey Bugaev - bugaevc
- Liav A - supercomputer7
- Linus Groh - linusg
- Ali Mohammad Pur - alimpfard
- Shannon Booth - shannonbooth
- Hüseyin ASLITÜRK - asliturk
- Matthew Olsson - mattco98
(And many more!) The people listed above have landed more than 100 commits in the project. :^)
License
SerenityOS is licensed under a 2-clause BSD license.