I saw this in the log, just after it had finished happening: <3.6> 2019-04-08 13:56:17 Telcontar systemd 1 - - Started Process Core Dump (PID 6572/UID 0). <3.6> 2019-04-08 13:56:17 Telcontar systemd-coredump 6573 - - Resource limits disable core dumping for process 6571 (single). <1.2> 2019-04-08 13:56:17 Telcontar systemd-coredump 6573 - - Process 6571 (single) of user 1000 dumped core. <3.6> 2019-04-08 13:56:32 Telcontar systemd 1 - - Started Process Core Dump (PID 6598/UID 0). <3.6> 2019-04-08 13:56:32 Telcontar systemd-coredump 6599 - - Resource limits disable core dumping for process 6597 (single). Telcontar:~ # grep systemd-coredump /var/log/messages | grep single | wc -l 1940 Telcontar:~ # 1940 coredumps of the "single" process! "Single" is: 6374 idle cer 549.90 K/s 0.00 B/s 0.00 % 1.47 % tracker-extract [single] (the line comes from "iotop -o") I updated the machine this morning, and this is just after booting. -- Cheers / Saludos, Carlos E. R. (from 15.0 x86_64 at Telcontar)