Dat ligt totaal aan de gebruikte instellingen, de ene keer wint 7-Zip en de andere keer WinRAR, ligt er ook deels aan wat voor bestanden er worden gebruikt.
Daarbij is er tegenwoordig ook RAR5, welke verbeterde compressie heeft, alleen ondersteunen andere applicaties zoals 7-Zip het vaak nog niet.
Echter lijkt het erop dat 7-Zip op hoge compressie instellingen echt absurde hoeveelheden geheugen gebruikt, en er dan ook veel langer doet om de opdracht te voltooien, terwijl de archieven misschien maar enkele procenten verschil hebben in groottes, dat is het dan ook niet waard.
Voorbeeld:
https://forum.saibateku.net/viewtopic.php?t=733WinRAR's new RAR5 format owns 7-Zip in my opinion. With RAR5 there is now the option to store duplicate files as reference, so rather than compressing each file individually, you can compress a single file once and each same file after points back to first, this can aid to producing archives even smaller than what 7-Zip produces. RAR5 also comes with the option to have large dictionaries up to 1GB in size, and while 7-Zip has had the ability to have large dictionaries for a while now, it's fucking shit at it. If I want to compress say 10GB of data using 7-Zip with a 128MB dictionary running 8 threads on my processor I'm looking at almost 7GB of my memory to compress by it's estimates. If I lower to using to 4 threads I get a more sane 3GB but now in turn the compression process will be slower. Keeping the threads at 4 and increasing the dictionary to 256MB the memory required becomes 5.5GB, then increasing to a 512MB dictionary it's 11GB, and with a 1GB dictionary memory doubles to 22GB, or 45GB of memory is required I switch back to 8 threads.
So with the memory requirements, going past 256MB with 7-Zip is unfeasible if I want to casually compress a large amount of data such as a game unless I want to wait forever. I have 16GB of memory in my system which should be and is enough for just about anything, but instead I have to close all my programs beforehand if I want a 512MB dictionary cause it won't even start unless it have exactly 11.5GB of memory free while using 4 threads. Doing tests was annoying and also boring cause I couldn't even watch a video while waiting for compression to finish else windows would complain and then start killing programs or the system would just freeze up so no video watching regardless. RAR5 on the other hand only needs up to 6 times the dictionary size to compress and just over dictionary size to decompress regardless of total file size, so a 1GB dictionary will only ever need 6GB to compress and 1.1GB decompress. I usually have 6GB of memory spare so everything works great and can watch several videos while WinRAR chomps data and excretes compressed goodness.
Qua pop-ups toch geen last van, gebruik zelf eigenlijk alleen het context menu, en WinZip, tja.
Voor de tweede keer in korte tijd is er een update voor 7-Zip verschenen. Dit opensource-archiveringsprogramma kan overweg met een groot aantal compressieformaten, waaronder zip, cab, rar, arj, lzh, chm, gzip, bzip2, z, tar, cpio, rpm, deb en uiteraard het zelfontwikkelde 7z. Verder is de software in staat om iso-bestanden en nsis-installatiepakketten te openen. In deze uitgave is een probleem met multi-volume archieven verholpen..
:strip_exif()/i/2004796590.png?f=thumbmedium)
/u/490470/Naamloos.png?f=community){kind=small}
/u/452542/crop57b8a2dd1446b_cropped.png?f=community){kind=small}
/u/94596/crop643fb12fd4e6d.png?f=community){kind=small}
:strip_icc():strip_exif()/u/21673/crop65674aee06c6d_cropped.jpg?f=community){kind=small}
:strip_icc():strip_exif()/u/92809/crop577f58c1b8795.jpeg?f=community){kind=small}
:strip_exif()/u/574651/crop5b78563680eb2.gif?f=community){kind=small}
/u/638638/crop59158feeb9c10.png?f=community){kind=small}
/u/672690/crop5e16e2d810778.png?f=community){kind=small}
/u/241825/Avatar_for_terrorist.png?f=community){kind=avatar}
:strip_icc():strip_exif()/u/438947/crop575c94eea6d14.jpeg?f=community){kind=small}
/u/98125/Tweakers-_avatar.png?f=community){kind=avatar}
:strip_exif()/u/252890/walking.gif?f=community){kind=small}
/u/152864/crop59af8ee117886_cropped.png?f=community){kind=small}
:strip_icc():strip_exif()/u/5964/crop56503163e97a5.jpeg?f=community){kind=small}
:strip_exif()/u/32775/fokker-60x60.gif?f=community){kind=small}
:strip_exif()/u/10069/neutron1.gif?f=community){kind=small}
