Programming

17157 readers

238 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

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

What are some of the best optimizations you applied to your code? (lemmy.world)

submitted 11 months ago* (last edited 11 months 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

[–] lysdexic@programming.dev 15 points 11 months ago (1 children)

The optimization I'm the most proud about was when I worked on a legacy project whose end-to-end builds took around 1 hour. After spending some time working on its architecture, project layout and build system, I managed to get the full end-to-end builds to take 10 minutes, and incremental builds to be almost instant.

What makes me the most proud about this project is that the technical debt plaguing the legacy project was directly and indirectly the reason why half a dozen of my team members burned out and quit the company. After that point my remaining team members started to be far less stressed and team velocity skyrocketed, just for the fact that the thought of iterating over a bugfix and posting a pull request didn't cost at least one hour, and sometimes two or three.

[–] DudeDudenson@lemmings.world 7 points 11 months ago* (last edited 11 months ago) (1 children)

Surely you got a bonus and a raise out of it right? Right??

Who am I kidding only managers get such things

[–] lysdexic@programming.dev 2 points 11 months ago

Surely you got a bonus and a raise out of it right? Right??

The only reward I got from it was recognition from my team members, which was already more than what I was expecting to get.

My manager was praised for the higher team velocity and improvements in the team's burndown chart. The hallmark of having done good work is seeing others trying to take credit for it.