this post was submitted on 29 Oct 2023
88 points (91.5% liked)

Programming

17364 readers
189 users here now

Welcome to the main community in programming.dev! Feel free to post anything relating to programming here!

Cross posting is strongly encouraged in the instance. If you feel your post or another person's post makes sense in another community cross post into it.

Hope you enjoy the instance!

Rules

Rules

  • Follow the programming.dev instance rules
  • Keep content related to programming in some way
  • If you're posting long videos try to add in some form of tldr for those who don't want to watch videos

Wormhole

Follow the wormhole through a path of communities !webdev@programming.dev

founded 1 year ago
MODERATORS
snowe@programming.dev
Ategon@programming.dev
MaungaHikoi@lemmy.nz
88
What are some of the best optimizations you applied to your code? (lemmy.world)
submitted 1 year ago* (last edited 1 year ago) by AlmightySnoo@lemmy.world to c/programming@programming.dev
38 comments fedilink hide all child comments
 

Got myself a few months ago into the optimization rabbit hole as I had a slow quant finance library to take care of, and for now my most successful optimizations are using local memory allocators (see my C++ post, I also played with mimalloc which helped but custom local memory allocators are even better) and rethinking class layouts in a more "data-oriented" way (mostly going from array-of-structs to struct-of-arrays layouts whenever it's more advantageous to do so, see for example this talk).

What are some of your preferred optimizations that yielded sizeable gains in speed and/or memory usage? I realize that many optimizations aren't necessarily specific to any given language so I'm asking in !programming@programming.dev.

you are viewing a single comment's thread
view the rest of the comments
[–] AlmightySnoo@lemmy.world 40 points 1 year ago* (last edited 1 year ago) (2 children)

Lemmy is probably a good live example of how sometimes going for a "faster language" like Rust isn't going to magically make a bad SQL database design better or slow queries faster: https://github.com/LemmyNet/lemmy/issues/2877

So yeah, SQL optimization stories are definitely welcome too!

[–] haui_lemmy@lemmy.giftedmc.com 5 points 1 year ago

I read through most of this and it was very informative. Thank you very much.

[–] peereboominc@lemm.ee 5 points 1 year ago

That was a good read. Thanks for the link.