https://github.com/voku/snappy
https://code.google.com/p/snappy/
https://github.com/voku/snappy
Last synced: 6 months ago
JSON representation
https://code.google.com/p/snappy/
- Host: GitHub
- URL: https://github.com/voku/snappy
- Owner: voku
- Created: 2013-02-11T19:11:25.000Z (over 12 years ago)
- Default Branch: master
- Last Pushed: 2020-12-16T18:09:42.000Z (almost 5 years ago)
- Last Synced: 2024-04-14T09:59:01.105Z (over 1 year ago)
- Language: C
- Size: 568 KB
- Stars: 1
- Watchers: 3
- Forks: 1
- Open Issues: 1
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Metadata Files:
- Readme: README
Awesome Lists containing this project
README
Google Snappy, available at http://code.google.com/p/snappy/
is a compression library designed for speed rather than compression ratios.
It is not a new concept by far. The Linux kernel currently uses LZO as the
default fast compressor. Snappy works faster, though achieves less compression.
Google's code is written in C with a lot of C++. Some of the more interesting
features that rely on C++ appear to have been elided from the open source
version of Snappy.
Goals:
To get the codebase into a shape that can be accepted into the mainline
Linux kernel and used with zram (http://code.google.com/p/compcache/).
Being able to compress vmlinux and initrd with Snappy is a secondary goal.
Same for support in Squashfs and other parts of the kernel that currently
support LZO.
Results:
I cut out or ported to plain ANSI C the necessary code and headers.
To cause less confusion, I call this project (and files) csnappy.
The API looks right, but I welcome comments.
The code *has* been tested in kernel-space using a patched zram and it works.
The code has been tested in a qemu emulating a PowerPC Mac and ARMv5TE running
Debian Wheezy.
I also use an ARMv6 Android phone for testing.
Testing on other hardware or platforms is welcome.
Note: The userspace tester is a hack, as is the shared library.
Someone wrote a perl wrapper for csnappy:
http://search.cpan.org/dist/Compress-Snappy/
https://github.com/gray/compress-snappy
Patch for upstream snappy tester is available: snappy_tester.patch
Patch for linux kernel is available: kernel_3_2_10.patch
Benchmark in userspace: userspace_benchmark.txt
Benchmark in kernel space with zram: zram_benchmark.txt