2019-09-25 RAM doubled on this VM

A few days ago I received an email: if I power cycled the VM all my sites are running on, I’d get my RAM doubled for no reason. Ohhhh, cool! But...

Power cycling my server always scares me – but they promised to double my RAM if I did it… What to do! What to do? What to do‽ 😨

I did it.

Monit shows all the processes restarting

Well, actually I did a soft reset first and I think that didn’t do it! They really want me to power cycle the thing. So here we go, again! 😱

Or did it? Anyway, I did it again, but this time I really did a power toggle.

And it seems to have worked.

Munin shows RAM going from 3GB to 6GB

I don't understand all the lines on that graph, to be honest. What’s that green “committed” line doing, for example? On ServerFault somebody wrote:

Committed memory is, essentially, all the memory which has been allocated by applications, whether it’s used or not. In contrast, the “apps” is memory that is allocated AND used.

OK! Lots of unused memory allocated to apps... Looks like I have a ton of dead apps hanging around or something?

The price we pay is always interesting, of course. I’m paying 15€/month for this kernel-based virtual machine (KVM). And apparently that now gets me one core at 2.3GHz, 6GB RAM and around 75GB of disk space.

alex@sibirocobombus:~$ df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            3.0G     0  3.0G   0% /dev
tmpfs           598M  7.9M  590M   2% /run
/dev/vda1        73G   32G   39G  46% /
tmpfs           3.0G     0  3.0G   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           3.0G     0  3.0G   0% /sys/fs/cgroup
tmpfs           598M     0  598M   0% /run/user/1000

No idea how that compares to others.

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