yetangitu/copyparty
1
0
Fork 0
mirror of https://github.com/9001/copyparty.git synced 2025-10-03 01:39:26 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

add chunksize cheat-sheet

Browse source
This commit is contained in:
ed 2025-01-10 18:24:40 +00:00
parent fcf32a935b
commit f5753ba720
5 changed files with 95 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

39
docs/devnotes.md
View file

@ -6,6 +6,7 @@
* [up2k](#up2k) - quick outline of the up2k protocol
* [why not tus](#why-not-tus) - I didn't know about [tus](https://tus.io/)
* [why chunk-hashes](#why-chunk-hashes) - a single sha512 would be better, right?
* [list of chunk-sizes](#list-of-chunk-sizes) - specific chunksizes are enforced
* [hashed passwords](#hashed-passwords) - regarding the curious decisions
* [http api](#http-api)
* [read](#read)
@ -95,6 +96,44 @@ hashwasm would solve the streaming issue but reduces hashing speed for sha512 (x
* blake2 might be a better choice since xxh is non-cryptographic, but that gets ~15 MiB/s on slower androids
### list of chunk-sizes
specific chunksizes are enforced depending on total filesize
each pair of filesize/chunksize is the largest filesize which will use its listed chunksize; a 512 MiB file will use chunksize 2 MiB, but if the file is one byte larger than 512 MiB then it becomes 3 MiB
for the purpose of performance (or dodging arbitrary proxy limitations), it is possible to upload combined and/or partial chunks using stitching and/or subchunks respectively
| filesize | filesize | chunksize | chunksz |
| -----------------: | -------: | ------------: | ------: |
| 268 435 456 | 256 MiB | 1 048 576 | 1.0 MiB |
| 402 653 184 | 384 MiB | 1 572 864 | 1.5 MiB |
| 536 870 912 | 512 MiB | 2 097 152 | 2.0 MiB |
| 805 306 368 | 768 MiB | 3 145 728 | 3.0 MiB |
| 1 073 741 824 | 1.0 GiB | 4 194 304 | 4.0 MiB |
| 1 610 612 736 | 1.5 GiB | 6 291 456 | 6.0 MiB |
| 2 147 483 648 | 2.0 GiB | 8 388 608 | 8.0 MiB |
| 3 221 225 472 | 3.0 GiB | 12 582 912 | 12 MiB |
| 4 294 967 296 | 4.0 GiB | 16 777 216 | 16 MiB |
| 6 442 450 944 | 6.0 GiB | 25 165 824 | 24 MiB |
| 137 438 953 472 | 128 GiB | 33 554 432 | 32 MiB |
| 206 158 430 208 | 192 GiB | 50 331 648 | 48 MiB |
| 274 877 906 944 | 256 GiB | 67 108 864 | 64 MiB |
| 412 316 860 416 | 384 GiB | 100 663 296 | 96 MiB |
| 549 755 813 888 | 512 GiB | 134 217 728 | 128 MiB |
| 824 633 720 832 | 768 GiB | 201 326 592 | 192 MiB |
| 1 099 511 627 776 | 1.0 TiB | 268 435 456 | 256 MiB |
| 1 649 267 441 664 | 1.5 TiB | 402 653 184 | 384 MiB |
| 2 199 023 255 552 | 2.0 TiB | 536 870 912 | 512 MiB |
| 3 298 534 883 328 | 3.0 TiB | 805 306 368 | 768 MiB |
| 4 398 046 511 104 | 4.0 TiB | 1 073 741 824 | 1.0 GiB |
| 6 597 069 766 656 | 6.0 TiB | 1 610 612 736 | 1.5 GiB |
| 8 796 093 022 208 | 8.0 TiB | 2 147 483 648 | 2.0 GiB |
| 13 194 139 533 312 | 12.0 TiB | 3 221 225 472 | 3.0 GiB |
| 17 592 186 044 416 | 16.0 TiB | 4 294 967 296 | 4.0 GiB |
| 26 388 279 066 624 | 24.0 TiB | 6 442 450 944 | 6.0 GiB |
| 35 184 372 088 832 | 32.0 TiB | 8 589 934 592 | 8.0 GiB |
# hashed passwords