News for hackers. Stuff that matters.

A comment on Bzip3 – A better and stronger spiritual successor to bzip2.

Re:Bzip3 – A better and stronger spiritual successor to bzip2 by denzquix on Tuesday May 10, 2022 @05:42AM (#31325181)
From their own benchmarks it seems more like bzip3 is geared towards a different compression/speed trade-off than bzip2, rather than an unambiguous all-around improvement. Am I misreading it?
[ Parent | on HN ]
Re:Bzip3 – A better and stronger spiritual successor to bzip2 by once_inc on Tuesday May 10, 2022 @05:43AM (#31325190)
That's what I took out of it too. Sacrificed a bit of speed and a lot of memory for a smaller output size.

edit: ah, bzip3 is parallelizable, while bzip2 isn't. That alone is enough for me to be able to claim 'faster'.

[ Parent | on HN ]
Re:Bzip3 – A better and stronger spiritual successor to bzip2 by thilog on Tuesday May 10, 2022 @07:07AM (#31325661)
bzip2 can exploit concurrency through pbzip2, can't it?
[ Parent | on HN ]
Re:Bzip3 – A better and stronger spiritual successor to bzip2 by klauspost on Tuesday May 10, 2022 @08:35AM (#31326312)
It is kind of a hack for decompression, where you look forward in the stream for a block signature, and try decompressing from there.

In practice it works, but it isn't pretty ;)

[ Parent | on HN ]
Re:Bzip3 – A better and stronger spiritual successor to bzip2 by gjvc on Tuesday May 10, 2022 @09:47AM (#31327063)
see also: lbzip2

(context: I have had a situation where files created by pbzip2 on linux were not able to be decompressed with some library on .NET, but using lbzip2, they were. I never looked into the details.)

[ Parent | on HN ]
Re:Bzip3 – A better and stronger spiritual successor to bzip2 by Klasiaster on Wednesday May 11, 2022 @04:42AM (#31337362)
Can't agree more, lbzip2 is the go-to tool for dealing with bzip2 compression and decompression, it's a whole lot of faster than bzip2 which is single-threaded!
[ Parent | on HN ]