Vulnerability scan finished after 10 hours

[PBSH]

I’m using the opensource Greenbone version. The logs show the following entry:
Vulnerability scan 69fdc356-6858-451b-a3c4-f93e1726671a finished for host 192.168.10.5 in 38139.34 seconds

38139.34 seconds is about 10-11 hours. I have a few questions:

1. How can I research which plugins take a long time?
2. How can I set a hard limit for a specific host? For example, if it takes > 4 hours to scan a specific host, I want to stop scanning that host and continue, to prevent the whole scan to delay.

I’ve read about scanner_plugins_timeout but read that it doesn’t make that much of a difference according to: Optimal timeout setting for OpenVAS

[cfi]

General info on overlong scan times and how to improve them is available e.g. here:

• Greenbone Enterprise Appliance documentation: 10.13.2 Long Scan Periods
• Greenbone Enterprise Appliance documentation: 20.1 Why is the Scanning Process so Slow?
• Greenbone Enterprise Appliance documentation: 17.2 Optimizing the Scan Performance

@PBSH

1. How can I research which plugins take a long time?

There is a scanner preference (via openvas.conf) called log_whole_attack which can be set to yes so that the execution time of each plugin / VT is logged accordingly in the scanner logs or syslog.

@PBSH

2. How can I set a hard limit for a specific host?

AFAICT there is no such functionality included in any component of the Greenbone Community or Enterprise Edition.