More than 10 concurrent Dagster jobs failing

Question

hi I am hosting dagster on the pro Railway plan and running into issues when having more than 10 concurrent runs. the variable I am setting is DAGSTER_MAX_CONCURRENT_RUNS=15, setting it to 10 works fine.

this is the error i am getting: 
```
pyo3_runtime.PanicException: could not spawn threads: ThreadPoolBuildError { kind: IOError(Os { code: 11, kind: WouldBlock, message: "Resource temporarily unavailable" }) }
```

i was wondering if this is a Railway limitation or a setting i need to configure to increase the number of threads

the memory and CPU looks fine on the metrics tab, i am not exceeding the plan limits

Project ID: 5ee74426-d012-4973-be29-4829cc6c9954

@Antonidas FYI

![image.png](https://station-server.railway.com/attachments/att_01kqytspmxf26rm9jk0hd5t077)