du is re-run for each context switch

[danielb2]

Exact steps to illustrate the issue

1. navigate to a top-level folder with a lot of directories that take a lot of space
2. toggle du on
3. switch to another context
4. switch back to the original context

Actual:

du is e-run each time.

Expected:

Switching context without any changes should not cause du to re-run (it should cache)

Use-case:

using nnn to purge old files isn't currently possible, it't too slow. I want to use one context to see in what folders the large files are, and switch to another context to go spelunking for large files.

[jarun]

Switching context without any changes should not cause du to re-run (it should cache)

A lot of it comes from the CPU cache already

I want to use one context to see in what folders the large files are, and switch to another context to go spelunking for large files.

nnn refreshes to show the latest data. When you delete the files from another context, du changes.

using nnn to purge old files isn't currently possible, it's too slow.

My personal experience is completely different. Probably you are on a hard disk/USB with too many files. I would suggest you use a tool that uses static snapshot e.g. ncdu.

[jarun]

Another option that I tried now - use a terminal multiplexer like tmux of dvtm to show windows side by side.