Read this Article from Find Top Running Processes by Highest Memory and CPU Usage in Linux. This is a quick way to view processes that consumed the largest RAM and CPU

ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head

   PID   PPID CMD                         %MEM %CPU
414699 414695 /usr/local/ansys_inc/v201/f 20.4 98.8
 30371      1 /usr/local/pbsworks/pbs_acc  0.2  1.0
 32241      1 /usr/local/pbsworks/pbs_acc  0.2  4.0
 30222      1 /usr/local/pbsworks/pbs_acc  0.2  0.6
  7191      1 /usr/local/pbsworks/dm_exec  0.1  0.8
 30595      1 /usr/local/pbsworks/pbs_acc  0.1  3.1
 30013      1 /usr/local/pbsworks/pbs_acc  0.1  0.3
 29602  29599 nginx: worker process        0.1  0.2
 29601  29599 nginx: worker process        0.1  0.3

The -o is to specify the output format. The -e is to select all processes. In order to sort in descending format, it hsould be –sort=–%mem

Interesting.