High memory usage in Docker/Linux never decreases

[IsaacThoman]

Version: Deno 2.2.6
My project consistently uses around 700 mib more memory when running on linux/docker (compiled or not) vs running on MacOS/Windows (also compiled or not)

I periodically run Deno.MemoryUsage on the server, can be viewed by typing /debug into the web app.

All examples running Deno v2.2.6

MacOS Sequoia v15.4 (Deno runtime, non-compiled)
mem (mib): rss: 55.80, heapTotal: 18.23, heapUsed: 17.72, external: 2.96

debian:bookworm-slim Docker image (compiled)
mem (mib): rss: 707.11, heapTotal: 18.99, heapUsed: 17.55, external: 3.85

Ubuntu Desktop 22.04 LTS (Deno runtime, non-compiled)
mem (mib): rss: 483.50, heapTotal: 18.72, heapUsed: 17.27, external: 2.98

My project for reference: https://github.com/candirugame/candiru

[IsaacThoman]

Memory on Ubuntu Desktop actually drops to around 40MB too once there's high memory pressure

[echoi92]

I'm running into similar issues.

Version: Deno 2.4.4

MacOS Sequoia v15.4.1 (compiled)
365MiB

Ubuntu 22.04 LTS
1144.5 MiB (-> 600mb after memory pressure)

I recently introduced a couple of wasm libraries (eg quickjs) into the project. not sure if that's the culprit..

[bartlomieju]

Sorry for a slow response. Are you still experiencing such problems on latest Deno (2.5.6)?

[echoi92]

I suspect so.

The mentioned instances are now on 2.5.4 and I have not seen any noticeable decrease in memory usage.

I'll see if I can run some tests on 2.5.6 when I get some free time.