26

Re: Acceleration disk reading by means of BtrFS

AlekseySQL wrote:

it is passed...
I, by the way, considered a question to use zip -  "on the fly". But, unfortunately, in Qt there is no operation with zip - archives, therefore the decision turns out not . At usage btrfs it is finite too not , but it turns out "on a freebie", therefore "the pocket does not pull".

Zip and zlib use different algorithms. In most zlib there are some algorithms.
In Qt is qCompress, compatible with zlib.

27

Re: Acceleration disk reading by means of BtrFS

With ++ wrote:

Zip and zlib use different algorithms.

Zip it is a format of storage of oblate files and folders, zlib is a format of compression of a byte stream.
Certainly different algorithms since they work for them with different entities smile
Here only and there and there for compression the same algorithm "deflate" (LZ77) is used.

28

Re: Acceleration disk reading by means of BtrFS

Within the limits of the given task it is necessary to search for algorithm which hardly better than RLE. If to construct the schedule of a type a compression ratio by spent time that there will be a strongly pronounced contrary flexure point.

29

Re: Acceleration disk reading by means of BtrFS

With ++ wrote:

Zip and zlib use different algorithms. In most zlib there are some algorithms.
In Qt is qCompress, compatible with zlib.

Thanks!

30

Re: Acceleration disk reading by means of BtrFS

mayton wrote:

Within the limits of the given task it is necessary to search for algorithm which hardly better than RLE. If to construct the schedule of a type a compression ratio by spent time that there will be a strongly pronounced contrary flexure point.

Algorithms with "Conversion of Barrouza-Uilera (BWT)", they on unpacking are linear, with compression certainly there are problems
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