Logs flooded with "Starting session…" notices

[Manawatu premium]

Manawatu premium

8. Februar 2020 at 22:34 #48001

Hi
My /var/log/syslog is flooded with notices of „Starting session c### of user pi“. There are two of these every second and they go on for thousands and thousands.
My /var/log/auth.log shows that (most?) sessions are closed immediately, with notices of „Session closed“ and „Removed session…)
What do you think is causing this frivolous behaviour?

I know it is not a cron job, as I have identified those in the logs. They are functioning as expected.
I know I can suppress the output by changing the LogLevel in system.conf. Or by routing the output to > /dev/null.
But I’d rather know why all those pointless sessions are being started. I hate to see resources used for no purpose.
Thanks for your help,
Scott
(I’m running a RPi 3B, Raspian 8 jessie, Kernel Linux 4.19.102-v7+)

`Feb 7 09:05:02 max2play systemd[1]: Started Session c30741 of user pi.
Feb 7 09:05:03 max2play systemd[1]: Starting Session c30742 of user pi.
Feb 7 09:05:03 max2play systemd[1]: Started Session c30742 of user pi.
Feb 7 09:05:03 max2play systemd[1]: Starting Session c30743 of user pi.
Feb 7 09:05:03 max2play systemd[1]: Started Session c30743 of user pi.
Feb 7 09:05:03 max2play systemd[1]: Starting Session c30744 of user pi.
Feb 7 09:05:03 max2play systemd[1]: Started Session c30744 of user pi.
Feb 7 09:06:02 max2play systemd[1]: Starting Session c30745 of user pi.
Feb 7 09:06:02 max2play systemd[1]: Started Session c30745 of user pi.
Feb 7 09:06:02 max2play systemd[1]: Starting Session c30746 of user pi.
Feb 7 09:06:02 max2play systemd[1]: Started Session c30746 of user pi.
Feb 7 09:06:03 max2play systemd[1]: Starting Session c30747 of user pi.
Feb 7 09:06:03 max2play systemd[1]: Started Session c30747 of user pi.
Feb 7 09:06:03 max2play systemd[1]: Starting Session c30748 of user pi.
Feb 7 09:06:03 max2play systemd[1]: Started Session c30748 of user pi.