I migrated to Ubuntu 18.04 a week ago due my VPN needs, and it works perfectly except that the OS is too slow and I sometimes can't open any applications until I reboot.
My laptop has good hardware (a seventh-generation Intel Core i7 and 8 GB of RAM), but my memory utilization is 6 GB or more when I run Skype, Slack, and Firefox together.
Is this normal?
vmstat 10 4 output:
procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
r b swpd free buff cache si so bi bo in cs us sy id wa st
7 0 0 898448 56344 3007108 0 0 148 215 420 1246 12 4 78 7 0
7 0 0 887908 56376 3059492 0 0 1 68 4231 13951 33 10 56 0 0
7 0 0 943000 56416 2996092 0 0 0 102 4199 14527 32 10 58 0 0
3 0 0 934796 56448 3003276 0 0 23 103 4397 14711 34 10 55 1 0
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