Question about Sophos Protection for Linux: Anti-Virus plugin

I would like to know if the avscanner scanning utility (from the command line) loads the virus definitions with each scan or if they are resident in memory (as in the case of the former SAVDI).
I ask this because the scanning speed is high compared to, for example, Clamav.
Clamav 1.0.0 is unusable from this point of view and the alternative is the new Sophos Protection for Linux.

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[edited by: Gladys at 3:34 AM (GMT -8) on 20 Dec 2022]