Why is BZIP2 slow?

bzip2 is a lot slower taking usually two to six times more time than lzma, that is, four to twelve times more than gzip. One interesting thing is that gzip and lzma decompress the faster the smaller the compressed size is, while bzip2 gets slower when the compression ratio gets better.

How fast is BZIP2?

Bzip2 is a high-quality, patent free file compressor using the Burrows-Wheeler algorithm. Files are typically compressed to anywhere between 10\% – 15\% of their original size while maintaining a speed of roughly twice the speed of compression and up to six times the speed of decompression of the PPM compression family.

Is BZIP2 faster than gzip?

Which one is better – GZ or BZ2? For compression and decompression time, GZIP is the definite winner. BZIP2, on the other hand, is slower than GZIP, but it produces smaller compressed files by a good margin. You can expect a 15\% decrease in compressed file size when you use BZIP2 over GZIP.

How much does BZIP2 compress?

bzip2 compresses data in blocks of size between 100 and 900 kB and uses the Burrows–Wheeler transform to convert frequently-recurring character sequences into strings of identical letters.

Is xz better than gzip?

In most cases, xz achieves higher compression rates than alternatives like gzip and bzip2. Decompression speed is faster than bzip2, but slower than gzip. Compression can be much slower than gzip, and is slower than bzip2 for high levels of compression, and is most useful when a compressed file will be used many times.

Is bzip2 lossless?

The bzip2 command is used for compressing and decompressing files. Moreover, like those programs, the compression is lossless, meaning that no data is lost during compression and thus the original files can be exactly regenerated. …

Is Brotli faster than gzip?

Brotli offers a significant speed advantage over Gzip, which is why the Brotli vs Gzip debate has really picked up steam. According to Certsimple: Javascript files compressed with Brotli are 14\% smaller than gzip. HTML files are 21\% smaller than gzip.