why is tar -czpf very slow under tmux CL9

[oceanwave]

In older cloudlinux versions, I frequently used screen.
Now that there is no screen in CL9, I'm trying to use tmux, but I find a new problem.
As root, when I do tar -czpf /backup/somefile.tar.gz /directory to create a 40 GB tar.gz file, if I run it under tmux it runs extremely slow, 10x slower than if I run it directly outside of tmux.
With screen I didn't have such a problem; is there a setting that I have to set in CL9 to make tmux not run so slowly? Do I need to assign resource limits somehow to tmux?

[bogdan.sh]

I believe you still can install screen from EPEL repository.

Anyway, back to original issue. Do you run this as a root or as a user on a server? How do you log into user? CloudLinux does not limit tools, but userspace.

[oceanwave]

Thanks. I'm logged into the server via ssh as wheel group user, su - to root
#root@server tmux
#root@server tar -czpf file.tar.gz directory
#root@server ctrl+b d

[bogdan.sh]

Do you see any ssh banner warning when you login over ssh? It looks the following

!!!! WARNING: YOU ARE INSIDE LVE !!!!"

If so, you are inside LVE even after switching to root user. Another easy way is to run 'lveps -p' as root and check the processes, you would see your own session etc.


Usually wheel group is excluded from LVE, please check pam config as per https://cloudlinux.zendesk.com/hc/en...n-server-login .