ZIP file uncompress 4x slower then 7zip

[tester44]

Hi,
Total commander unzips ~4-5x slower then 7zip.
No, its not multithreading (not used during uncompress by 7zip).

We talk about 20s .vs. 90s for ~3GB file, not many files inside.

Would you consider using better optimized library/code for uncompress ?
To be specific - its about Deflate algorithm. Maybe more of them, didn't make comprehensive tests.
Observed on various CPUs of different ages and both brands.

[Horst.Epp]

Why do you insist of using TCs internal zip tools for this ?
Whats the times if you try the same job with the TC Total7zip plugin.
Or if you have 7zip installed with a button like this:

Code: Select all

TOTALCMD#BAR#DATA
"C:\Program Files\7-Zip\7z.exe"
e  %P%N -o%T
C:\Program Files\7-Zip\7zFM.exe,1
Uncompress with 7zip

0
-1

[Hacker]

Horst.Epp,
Why do you insist on not improving TC but instead suggest that all TC users should download a 3rd party plugin?

Roman

[jinsight]

Support improving TC instead of using a 3rd party plugin regarding compression software as TC already controls aspects of compression software. Since that cow is already out of the barn why not implement a requested and meaningful improvement all things being equal.

[Horst.Epp]

Horst.Epp,
Why do you insist on not improving TC but instead suggest that all TC users should download a 3rd party plugin?

Roman

Thats my way to solve problems as long as there are no better internal solutions.
No one is forced to follow my suggestions
Also improving internal zip will never get in the range of 7zip performance and functions.

[tester44]

@Horst.Epp - thanks for your suggestion. Taken, implemented with one small change:
old
e %P%N -o%T
new
x %P%N -o%T

Of course, internal code improvement would be appreciated, because above solution doesn't work on partial selection from zip file content etc. and the perf. gap is tremendous.

[Hacker]

Horst.Epp,

Thats my way to solve problems as long as there are no better internal solutions.
No one is forced to follow my suggestions

May I then suggest to formulate your suggestions to sound more like suggestions and less like criticisms, perhaps?

Roman

[Horst.Epp]

@Horst.Epp - thanks for your suggestion. Taken, implemented with one small change:
old
e %P%N -o%T
new
x %P%N -o%T

Of course, internal code improvement would be appreciated, because above solution doesn't work on partial selection from zip file content etc. and the perf. gap is tremendous.

Thanks, you are right x is better