How can Worker memory usage be managed ?

[inverted-capital]

In this issue #6916 the ability was added to register a callback when an isolate is under memory pressure, so it can be terminated without bringing down the whole v8 instance. How can we access this capability ?

Specifically we would like the means of running untrusted code within a Worker instance, taking advantage of the sandboxing provided by Deno, and the efficiencies in resource usage and latency afforded by v8 isolates. Thank you for this great project.

[ykahlon]

I am interested to know whether you got an answer to this question?

[inverted-capital]

I did not get an answer yet

[josephrocca]

For reference, I've made an issue about this which contains step-by-step instructions to building a custom deno binary that has a WEB_WORKER_HEAP_LIMIT_BYTES environment variable:

• A way to limit non-heap allocations (i.e. V8 "Large Object Storage" / Deno.memoryUsage().external) in Web Workers for untrusted code #26202