Worker -> Durable Object fetch RPC call performance in Rust
Hello I'm running into some performance issues using Workers and Durable Objects. I'm using rust. I would like some help improving performance.
I have a worker that clients connect to. The Worker then passes the request through to a Durable Object (DO) which establishes a websocket connection and sends over a somewhat large batch of data.
I measured a measures for a cold start of the durable object.
* the total time for the Durable Object "fetch" method to complete
* total time for the worker to call the durable object fetch
* size of the payload the durable object sends
Then I take
My main thoughts:
* Am I just doing something dumb to make this slow?
* How can I improve this scaling (the
* How can I improve the startup time?
* What are some things I should look for? I noticed I maybe be doing an extra allocation of the data, could things like that be significant.
* is there a better way to directly measure the Durable Object startup time than what I've done here?
I also attached some code snippets where I call the durable object from the worker, and the the
I have a worker that clients connect to. The Worker then passes the request through to a Durable Object (DO) which establishes a websocket connection and sends over a somewhat large batch of data.
I measured a measures for a cold start of the durable object.
* the total time for the Durable Object "fetch" method to complete
do_t* total time for the worker to call the durable object fetch
worker_t* size of the payload the durable object sends
sizeThen I take
Δt = worker_t - do_tΔt/sizey = 0.16x + 2950.16 ms/KB50Mbs290ms290msMy main thoughts:
* Am I just doing something dumb to make this slow?
* How can I improve this scaling (the
0.16ms/KB* How can I improve the startup time?
* What are some things I should look for? I noticed I maybe be doing an extra allocation of the data, could things like that be significant.
* is there a better way to directly measure the Durable Object startup time than what I've done here?
I also attached some code snippets where I call the durable object from the worker, and the the
fetch
foo.rs1.95KB
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