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For the last few days my Ubuntu 16.04 suffers random slowdowns that it prevents the apps from loading and doesn't even allow me to connect via SSH.

The only way I can resolve it is by rebooting the server, but once I reboot I don't know what caused the issue.

I tried running htop but it doesn't help because that's realtime stats I want to see which processes were the ones causing the slowdown that left me with reboot as the only option to access the server again

  • Do you have enough memory in your machine? "free -m" – zee Nov 14 '18 at 16:18
  • I think so: pastebin.com/XMdbLJZ1. But my main problem is that when the system slows down I can't even connect via SSH. So running free -m would not help as it shows real time stats. I want to know what's causing the huge CPU or ram usage before I have to reboot the server from the provider panel – Juan Martin Nov 14 '18 at 17:19
  • What about Disk storage(hard disk) – zee Nov 14 '18 at 17:21
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    You need a monitoring solution. There's hundreds, literally. New relic is probably easiest though – Sirex Nov 14 '18 at 18:44

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