High memory usage?

[Charles Sprickman]

I found iterm using slightly more than Safari today, just under 3GB.

This seems a bit high for a terminal app…

I have 2 local tabs in the hotkey window, then 4 other windows, 3 of which are all tmux and have about 8 tabs each.

Here’s a summary from sampling:

Analysis of sampling iTerm2 (pid 32678) every 1 millisecond

Process:         iTerm2 [32678]

Path:            /Applications/iTerm.app/Contents/MacOS/iTerm2

Load Address:    0x10af47000

Identifier:      com.googlecode.iterm2

Version:         3.5.0beta4 (3.5.0beta4)

Code Type:       X86-64

Parent Process:  ??? [1]

Date/Time:       2022-01-19 18:55:30.093 -0500

Launch Time:     2022-01-11 21:06:54.496 -0500

OS Version:      Mac OS X 10.14.6 (18G9323)

Report Version:  7

Analysis Tool:   /usr/bin/sample

Physical footprint:         2.9G

Physical footprint (peak):  3.0G

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Any ideas on what I can do to keep this under 1GB or so? Laptop only has 16GB, so things are a bit tight with a few browsers running.

Thanks,

Charles

[Adrian Bool]

Hi Charles,

I see only around 500MB of RAM being used by iTerm (3.4.12) on my machine.

For the following profile settings,

Could you have selected Unlimited Scrollback within your profile; perhaps leading to the high RAM usage you're seeing?

(Best to check both your default and tmux profiles...)

Kind regards,

aid

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[George Nachman]

Unlimited scroll back is the most common reason for memory growth but of course leaks are always possible. Please follow these steps to get diagnostic info on your memory usage and file a task:

https://gitlab.com/gnachman/iterm2/-/wikis/Heapshot

I’m woefully behind on tasks right now because of a giant refactor, so it may be some time before I can look at it.

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[Charles Sprickman]

Thanks for the info!

I just checked and my tmux profile had scrollback set to 30K lines. Not sure if that’s huge or not?

My “Default” profile had unlimited (which I’ve changed to 30K lines), but I also don’t usually have any active windows/tabs for that profile.

After making sure no profiles had unlimited, I restarted iterm and was able to hit about 2.5GB after a few days.

Before I go exploring and open a task, can you confirm whether my large (but not unlimited) scrollback is likely the issue?

Thanks,

Charles

To view this discussion on the web visit https://groups.google.com/d/msgid/iterm2-discuss/CAB5Rqok0L82n8DPB13Bv0EiukC0Uj%3DhX4QeTj0C%2BmgHjYuctQA%40mail.gmail.com.

[George Nachman]

No, it’s not your scroll back. Please file an issue and if you can get a memgraph that would be really helpful. Instructions are here: https://gitlab.com/gnachman/iterm2/-/wikis/Heapshot

To view this discussion on the web visit https://groups.google.com/d/msgid/iterm2-discuss/ADB9C444-6E1C-412F-A0A3-F98B77DD12E5%40morefoo.com.