Hi, I'm working on some trading application in Rust and, doing some components, I've few points that I don't understand what is happened, despite few days trying to do. I'm not (hope not yet) a confirmed Rustacean, so sorry if those questions seems trivial. The first component that I've is a buffe…

Hi Kornel, thanks for your advice! Should use!

It doesn't matter if your data is on the stack or on the heap. What you are probably measuring is the write to RAM performance. bench1: Option<u64> has a size of 16 byte. Your write ~16MB. bench2: The size of Option<Point> is not visible from the code. I'd guess 24 bytes. This means you write 24MB…

buffer.insert_at(Some(Order::new_on_draft(OrderType::Limit(LimitOrderData{price: 45.2, quantity: 458 + k, tif: TimeInForce::Day,side:OrderSide::Buy}),&OrderData::default())), 4578125899); buffer.insert_at(Some(Order::new_on_draft(OrderType::Limit(LimitOrderData{price: 45.2, quantity:…

Use cargo asm to check what the code compiles to: [image] cargo-show-asm A cargo subcommand that displays the generated assembly of Rust source code Make sure your benchmark is accurate (there are many pitfalls in using Instant): [image] criterion …

Hi Richardscollin, thanks for your response, I wasn't considerd caching here....

Hi Bruecki Many thans for your answer and the time to review. So, you mean that the performances here are practically determinated by the hardware, make sense indeed. Do you have maybe some way to have more performant code on that? Some strategies to improve? Thanks for your help

If your program is limited by memory bandwidth, then to go faster, you need to use less of it per unit of work. Look for ways to make your data structures more compact — storing the same information in fewer bytes. You can afford to spend many CPU cycles on “unpacking” the data. Reduce the number …

[image] leopold: that the performances here are practically determinated by the hardware, I have not really looked at what you are doing there but when dealing with large amounts of data there are some simple things to consider: Modern processors are very fast but their memory systems cann…

Hi ZiCog Top many thanks for that, this is so interesting topic "mechanical sympathy"...Thank you so much!

Hi Kpreid Thanks for your time and advices, I'll try to do something about my structs in order to be more compact and aligned. Yes, sure about the best practices about readeability vs complexity, thanks to say that.

Rust array performance

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Rust array performance

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