Resolved This is not Normal

[Zardiw]

Memory Usage
Total
Used
Free
Shared
Buffer
Cached
Usage
15.50 GB
15.28 GB
226.81 MB
0 B
248.34 MB
7.30 GB
51.48%

I have very little usage on the sites on this server.

CPU usage
Last 1 minute 0.50
Last 5 minutes 0.32
Last 15 minutes 0.17

Swap Usage
Total
Used
Free
Usage
15.79 GB
132.98 MB
15.66 GB
0.82%

Hard Disk Usage
File system
Total
Used
Available
Capacity
/dev/sda5
906 426.32 MB
14 023.91 MB
846 335.86 MB
1.55%

sysfs
0.00 MB
0.00 MB
0.00 MB
0%

proc
0.00 MB
0.00 MB
0.00 MB
0%

devtmpfs
7 929.27 MB
0.00 MB
7 929.27 MB
0%

securityfs
0.00 MB
0.00 MB
0.00 MB
0%

tmpfs
7 938.41 MB
0.00 MB
7 938.41 MB
0%

devpts
0.00 MB
0.00 MB
0.00 MB
0%

cgroup
0.00 MB
0.00 MB
0.00 MB
0%

pstore
0.00 MB
0.00 MB
0.00 MB
0%

configfs
0.00 MB
0.00 MB
0.00 MB
0%

systemd-1
0.00 MB
0.00 MB
0.00 MB
0%

debugfs
0.00 MB
0.00 MB
0.00 MB
0%

hugetlbfs
0.00 MB
0.00 MB
0.00 MB
0%

mqueue
0.00 MB
0.00 MB
0.00 MB
0%

/dev/sdb1
938 767.02 MB
76.02 MB
890 981.59 MB
0.01%

/dev/sda1
487.95 MB
163.70 MB
288.41 MB
33.55%

/dev/sda3
15 789.87 MB
44.20 MB
14 921.08 MB
0.28%