What does RVZ compression block size affect?

**JosJuice** · 06-23-2022, 01:35 AM **#11**

(06-22-2022, 10:36 AM)Klemc Wrote: I'd like to know about the "no compression" in comparison... any advantage, because it makes ISO smaller enough for me !

It's similar to Zstandard in performance in practice (perhaps a tiny bit faster), but is of course larger than Zstandard.

(06-22-2022, 10:36 AM)Klemc Wrote: And about block siz behvior in that case, always smaller better in case of hypothetical slow loading ?

Yes, smaller is better. But the effect is less pronounced than if you were using compression.

(06-22-2022, 10:36 AM)Klemc Wrote: And so, the level 22 doesn't affects decompression ? 22...

Correct. It affects the compression time but not the decompression time.

Klemc · (This post was last modified: 06-23-2022, 03:06 AM by Klemc.)

(06-23-2022, 01:35 AM)JosJuice Wrote: It's similar to Zstandard in performance in practice (perhaps a tiny bit faster), but is of course larger than Zstandard.

Yes, smaller is better. But the effect is less pronounced than if you were using compression.

Correct. It affects the compression time but not the decompression time.

Thanks a thousand, i'll do it right now, just have to decide though.

I think to no comp. & 32ko, but could be ZStandard lvl22, too.

I will do the two and report, after i'll apply on my SSD based on the result.

Edit: i'll post Default (bc i had it done) Vs. No Compression 32ko. I do it for myself, i'll let results here for reference/info.

Klemc · 06-23-2022, 04:45 AM **#13**

ISO :
GCube = 1.36
Wii = 4.38
OtherM = 7.93

Left : Default settings
Vs.
Right : No compression

ZStandard 128ko | NOCompression 32ko
--------------------------------------------------------------

158 Go
81,4 Go
99,0 Go

The games in image, because of how i named files, could help identify :
https://ibb.co/8gBknqN