Lubuntu 18.04, default desktop configuration.
I turn the swap off and begin a RAM stress test.
When I allocate too much RAM, the system starts to read or write something constantly, completely freezes and requires a hard reset.
What exactly is happening? What data it reads or writes, and why does it freeze it completely?
I understand the system may freeze when it runs out of memory, the question is why my hard drive is so busy? Does it drops/re-reads the disk cache? Ext nodes? Something else?