[6.8] Backport fixes for memory reporting issues#68554

Merged

williamrandolph merged 2 commits intoelastic:6.8from williamrandolph:backport/6.8/memory-reporting-issues

Feb 4, 2021

+66-9

Commits on Feb 4, 2021

Report used memory as zero when total memory cannot be obtained

danhermann
authored and
williamrandolph
committed
[7.7] Do not report negative values for swap sizes (elastic#57324 )

danhermann
authored and
williamrandolph
committed