[clamav-users] How to boost clamav? Reloading database results in a talking timeout?

[Thomas Barth]

Am 2019-09-01 19:30, schrieb Joel Esler (jesler) via clamav-users:
> Alright. I think we’ve beat the proverbial dead horse here.  The devs
> know this is a request and they will get it into their dev queue for
> examination.

I saw that clamd use just one core at a time to load the databases.

top - 16:09:43 up 23:33,  2 users,  load average: 0.47, 0.13, 0.04
Tasks: 176 total,   2 running, 174 sleeping,   0 stopped,   0 zombie
%Cpu0  :  0.0 us,  0.0 sy,  0.0 ni, 99.0 id,  0.0 wa,  0.0 hi,  0.0 si,  
1.0 st
%Cpu1  :  1.0 us,  1.0 sy,  0.0 ni, 98.0 id,  0.0 wa,  0.0 hi,  0.0 si,  
0.0 st
%Cpu2  : 85.4 us,  6.8 sy,  0.0 ni,  0.0 id,  0.0 wa,  0.0 hi,  0.0 si,  
7.8 st
%Cpu3  :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  
0.0 st
%Cpu4  :  0.0 us,  1.0 sy,  0.0 ni, 99.0 id,  0.0 wa,  0.0 hi,  0.0 si,  
0.0 st
%Cpu5  :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  
0.0 st
MiB Mem :  16042.2 total,  14207.5 free,    813.4 used,   1021.3 
buff/cache
MiB Swap:      0.0 total,      0.0 free,      0.0 used.  14921.4 avail 
Mem

   PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ 
COMMAND
   455 clamav    20   0  469352 207432  10840 R 100.0   1.3  30:33.51 
/usr/sbin/clamd --foreground=true
22861 root      20   0   11316   3648   3108 R   2.0   0.0   0:24.91 top

Always 2 minute loading time
Wed Sep  4 16:09:17 2019 -> Reading databases from /var/lib/clamav
Wed Sep  4 16:11:24 2019 -> Database correctly reloaded (10966440 
signatures)


Why not using half of the cores to also reduce the loading time? Many 
years ago when I used eMule for downloading big files, I was so 
fascinated by the download mechanism: one big file, many download 
sources to get the file together piece by piece. And it didn't have to 
follow any order. That would be fun to programm for loading the 
databases, am I right? :-)