On 7/30/17, 6:50 PM, "Phillip Lougher" <phillip.lougher@xxxxxxxxx> wrote: > On Thu, Jul 20, 2017 at 10:27 PM, Nick Terrell <terrelln@xxxxxx> wrote: >> Add zstd compression and decompression support to SquashFS. zstd is a >> great fit for SquashFS because it can compress at ratios approaching xz, >> while decompressing twice as fast as zlib. For SquashFS in particular, >> it can decompress as fast as lzo and lz4. It also has the flexibility >> to turn down the compression ratio for faster compression times. > > Hi Nick, > > This patch (and none of the previous versions) is showing up on > squashfs-devel@xxxxxxxxxxxxxxxxxxxxx. I also think you should have > emailed me directly as a courtesy, as I'm the Squashfs author and > maintainer. Sorry about that Phillip, it was an oversight on my part. I've added you to the CC list going forward, and have subscribed to the mailing list. >> | Method>> | Ratio | Compression MB/s | Decompression MB/s | >> |----------------|-------|------------------|--------------------| >> | gzip>> | 2.92 |>>> 15 |>>>>128 | >> | lzo>>>| 2.64 |>>> 9.5 |>>>>217 | >> | lz4>>>| 2.12 |>>> 94 |>>>>218 | >> | xz>>> | 3.43 |>>> 5.5 |>>>> 35 | >> | xz 256 KB> | 3.53 |>>> 5.4 |>>>> 40 | >> | zstd 1>> | 2.71 |>>> 96 |>>>>210 | >> | zstd 5>> | 2.93 |>>> 69 |>>>>198 | >> | zstd 10>>| 3.01 |>>> 41 |>>>>225 | >> | zstd 15>>| 3.13 |>>> 11.4 |>>>>224 | >> | zstd 16 256 KB | 3.24 |>>> 8.1 |>>>>210 | > > > Those numbers look good to me. > >> >> This patch was written by Sean Purcell <me@xxxxxxxxx>, but I will be >> taking over the submission process. >> >> [1] http://releases.ubuntu.com/16.10/ >> [2] https://github.com/facebook/zstd/blob/dev/contrib/linux-kernel/squashfs-benchmark.sh > > I can't find your patch that adds zstd to the user-land > Squashfs-tools. That would be handy to do any testing :-) > > Phillip I'll include the squashfs-tools patch that Sean just posted in the next version. ��.n��������+%������w��{.n�����{����n�r������&��z�ޗ�zf���h���~����������_��+v���)ߣ�
