Here is a screenshot from top. It shows the hugh CPU load for the influxd process. There is a lot of free memory, no swap.
The input load is 40-60 messages per minute.
I did change something today, which seems to have no effect so far but needed correction. In the configuration of the influxdb node I changed the precision from ns (default) to seconds. This change is in effect, as can be seen in the log.
Here is the df -h which shows that there is ample space left.
pi@db1:/var/log $ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/root 110G 6.3G 98G 7% /
devtmpfs 1.7G 0 1.7G 0% /dev
tmpfs 1.9G 0 1.9G 0% /dev/shm
tmpfs 1.9G 17M 1.9G 1% /run
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup
/dev/sda1 253M 50M 203M 20% /boot
tmpfs 379M 0 379M 0% /run/user/1000
The blue nodes from my system measurement flow:
node-red-contrib-os
I had to install iotop first.
The frist screenshot is the thread view, using 10s intervals:
The second screenshot is the process view, again using 10s intervals:
I do not have any experience with iotop. But the write activity seems quite heavy, if M/s means MByte/s.
