Sergey wrote:
Since some time there has been a noticeable increase a launch time.
Startup with all databases takes about 220 seconds now. Startup
without daily.cld takes 12 seconds. What's happened with daily.cld?
Hey,
sorry for breaking the thread, I've just subscribed and have found your
post in the archive:
https://lists.clamav.net/pipermail/clamav-users/2019-September/008496.html
So far I've found out, that the most time (about 90%) is lost in
"daily.ldb".
What I can say is, that there is no specific signature which slows it
down.
It is the algorithm... it looks like the time needed to load a new
signature depends on the number of sub-signatures (logic) and the number
of signatures already loaded in memory.
I think the Big-O-notation
(https://en.wikipedia.org/wiki/Big_O_notation) for this algorithm
wouldn't look good.
So during loading the lines (virus signatures) of ldb-file it becomes
slower and slower.
Very slow is if there are many sub-signatures for a virus signature.
There are more of this kind in the last 3rd or 4th of the ldb-file.
Maybe these signatures got added in the last months. My logfiles tell me
that the startup time of clamd was ok until February/March 2019.
greets
Markus
_______________________________________________
clamav-users mailing list
clamav-users@lists.clamav.net
https://lists.clamav.net/mailman/listinfo/clamav-users
Help us build a comprehensive ClamAV guide:
https://github.com/vrtadmin/clamav-faq
http://www.clamav.net/contact.html#ml
