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Author notes
zlib.h -- interface of the 'zlib' general purpose compression library version 1.3.1, January 22nd, 2024
Copyright (C) 1995-2024 Jean-loup Gailly and Mark Adler
This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution.
What? Game uses zlib compression for BSAs, NPC and Landscape records. While you can decompress those, most mod authors don't. Why is that an issue? Zlib is super slow to decompress, which leads to longer loading times and stuttering. On top of that, game obviously uses a super old zlib version (1.2.1), which doesn't help.
I was bored, and decided to upgrade it to the latest version (1.3.1 at the time of writing), and to my surprise, it's about 2 times faster.
Does that mean that you should compress all BSAs now? No, the decompression time is still super slow. Does that mean that you *can* compress BSAs without being scared of freezing the game every time a cell is loaded? Yea.
FYI, record compression is disabled by the latest GECK Extender.
Decompression stats: Time it takes to decompress files and records
Mojave Express Guide - Vanilla: 647.725ms (total) | 0.688ms (avg time per file) Mojave Express Guide - Updated: 324.249ms (total) | 0.344ms (avg time per file)
Decided to check with vanilla BSAs as well: Mojave Express Guide - Vanilla: 4111.904ms (total) | 0.778ms (avg time per file) Mojave Express Guide - Updated: 2130.654ms (total) | 0.403ms (avg time per file) So yea, you still have to decompress stuff
Loading time data: Time it takes to load - from main menu, to in-game. Mojave Express Guide: Vanilla zlib: 9578.195ms Updated zlib: 9024.290ms Uncompressed: 8796.764ms
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