this post was submitted on 29 May 2024
1658 points (99.6% liked)
Technology
59597 readers
3752 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related content.
- Be excellent to each another!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, to ask if your bot can be added please contact us.
- Check for duplicates before posting, duplicates may be removed
Approved Bots
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
True. Until you responded I actually completely forgot that you can selectively download torrents. Would be nice to not have to manually manage that at the user level though.
Some kind of bespoke torrent client that managed it under the hood could probably work without having to invent your own peer-to-peer protocol for it. I wonder how long it would take to compute the torrent hash values for 100PB of data? :D
~300MB/s on one core of 13-years old i5 SHA-256(used in BitTorrent v2). Newer cores can about half a gig per one. Less than 3 days on one core then. Less than day on 3 cores.*
* assuming no additional performance penalty for increased power consumption and memory bandwith usage
My guess storage bandwidth would be biggest bottleneck.
Found relatively old article(in Russian, just search for openssl and look at graph that mentions SHA-512 which is SHA-2 too) that says i7-2500 all-cores throughput is slightly over 1GB/s.