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Measure default instance memory usage and optimize

Pull requests: 1
Contributors: 2
Level: Intermediate
  • Rust
Pull requests: 1
Contributors: 2
Level: Intermediate
  • Rust

On GitHub

Library for building cosmos-compatible wasm smart contracts
More info >

Issue posted by: 
ethanfrey's avatar

Ethan Frey

Description

I heard the default memory for instances was 32MB, which is far more than any contract I have written will need. The size of each one limits the number of contracts that can be held in memory via the Instance LRUCache.

It seems there is a fair bit of control of the memory regions that you can set up in an instance.

https://spectrum.chat/wasmer/runtime/share-memory-region-between-wasm-instances~3abfaa44-8fc8-4401-8590-1ec3bfbede5d

You can control min and max memory in the descriptor: https://docs.rs/wasmer-runtime/0.4.2/wasmer_runtime/wasm/struct.MemoryDescriptor.html

Measure the default memory usage (both of the wasm memory pages and the instance overhead (globals, wasm bytecode, etc). Then experiment on optimizing it, and experiment with the LRUCache. Definitely document this.

    Use Open Source to hire or get hired

    On GitHub

    Library for building cosmos-compatible wasm smart contracts
    More info >

    Issue posted by: 
    ethanfrey's avatar

    Ethan Frey

    Use Open Source to hire or get hired

    Measure default instance memory usage and optimize
    View on GitHub