Periodic scripts that hit external servers can cause a "thundering herd" problem, whereby many systems' periodic scripts run at the same time, and overload the server. To prevent this, such scripts should sleep for a random amount of time before hitting the external server.
After r316432, there is a common anticongestion function to handle this. For an example of how to use it, see
Created attachment 181704 [details]
Patch fixing "thundering herd" problem
(In reply to Alan Somers from comment #0)
Thank you Alan. Patch fixing "thundering herd" problem is ready.
A commit references this bug:
Date: Sat May 20 02:59:01 UTC 2017
New revision: 441287
Use anticongestion in security/rkhunter
Introduced in src r316342, the anticongestion feature unifies multiple periodic
scripts' disparate sleeps.
Submitted by: email@example.com
Reported by: asomers
Reviewed by: asomers
Approved by: Lukasz Wasikowski <firstname.lastname@example.org> (maintainer)
Approved by: brd (ports)