Feature Request: Filter to show only certain sub tree(s)

[BenBE]

Repost from: hishamhm/htop#836

Short Description:
Allow the user to select some processes/threads of interest and after activating the filter view only show those or any children.

Detailed explanation in hishamhm/htop#836 (comment)

[layderv]

Hi. I implemented the solution in the most upvoted comment in the link above. See #219

[layderv]

Can this be closed?

[BenBE]

The intention of the original feature request was for more or less free selection (space bar) for the trees to show after filtering. So the basic infrastructure to have this is there, but if I remember the patchset correctly it's currently bound to some explicit filter string.

[singalen]

I would appreciate even more if I could set a parent process PID on a command line.

[ashamza]

I wanted to do something that's similar to this FR. I wanted to add a feature to include children and/or parents for a process when filter. A use case for it is when using a tmux/screen session on a busy server when usually I am interested in processes that's running on those sessions instead of everything.

I have made hishamhm/htop#973 (comment) to show what I was looking for. Is this already fixed? is it possible now to have such a filter?

[singalen]

It doesn't look like the current filter supports it.

[poetaman]

@BenBE Btw, something struck me regarding this. Given the top pane shows CPU activity, etc it would be nice to have a keybinding to toggle between viewing the active filter and unfiltered (default) view. That would be useful if user sees unusual activity, and wants to toggle back to unfiltered view without having to close htop and reopen it.

[BenBE]

Such a key binding should probably best go into its own issue, as that's not directly part of this issue. But it has its merits.