Now i see in my account:
31492 admin 20 0 476776 31992 7996 R 13.0 3.1 0:09.67 apache2
31987 admin 20 0 461036 35220 3916 R 13.0 3.5 0:02.37 apache2
32038 mysql 20 0 894032 131044 2980 S 13.0 12.9 0:01.42 mysqld
32417 admin 20 0 478600 30152 4236 R 13.0 3.0 0:00.60 apache2
32418 admin 20 0 476248 27528 4236 R 13.0 2.7 0:00.67 apache2
32424 admin 20 0 479912 32928 5816 R 13.0 3.2 0:00.57 apache2
25 root 20 0 0 0 0 S 6.5 0.0 0:16.48 kworker/0:1
32408 admin 20 0 482228 37592 8300 R 6.5 3.7 0:00.78 apache2
32416 admin 20 0 480336 30932 4032 R 6.5 3.0 0:00.65 apache2
32422 admin 20 0 481356 41452 13952 R 6.5 4.1 0:00.65 apache2
32423 admin 20 0 465072 16364 4008 R 6.5 1.6 0:00.48 apache2

my apache2.conf

It is split into several files forming the configuration hierarchy outlined

below, all located in the /etc/apache2/ directory:

/etc/apache2/

|-- apache2.conf

| `-- ports.conf

|-- mods-enabled

| |-- *.load

| `-- *.conf

|-- conf.d

Global configuration

PidFile ${APACHEPIDFILE}
Timeout 30
KeepAlive Off
MaxKeepAliveRequests 100
KeepAliveTimeout 10

<IfModule mpm_prefork_module>
StartServers 1
MinSpareServers 1
MaxSpareServers 1
ServerLimit 16
MaxClients 100
MaxRequestsPerChild 1000
</IfModule>

<IfModule mpm_worker_module>
StartServers 2
MinSpareThreads 25
MaxSpareThreads 75
ThreadLimit 64
ThreadsPerChild 25
MaxClients 200
MaxRequestsPerChild 4000
</IfModule>

<IfModule mpm_event_module>
StartServers 2
MinSpareThreads 25
MaxSpareThreads 75
ThreadLimit 64
ThreadsPerChild 25
MaxClients 200
MaxRequestsPerChild 4000
</IfModule>

These need to be set in /etc/apache2/envvars

User ${APACHERUNUSER}
Group ${APACHERUNGROUP}

User www-data

Group www-data

AccessFileName .htaccess

<Files ~ "^\.ht">
Order allow,deny
Deny from all
Satisfy all
</Files>

DefaultType None
HostnameLookups Off

ErrorLog ${APACHELOGDIR}/error.log
LogLevel warn

Include module configuration:

Include mods-enabled/.load
Include mods-enabled/.conf

Include list of ports to listen on and which to use for name based vhosts

Include ports.conf

LogFormat "%v:%p %h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" vhost_combined
LogFormat "%h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" combined
LogFormat "%h %l %u %t \"%r\" %>s %O" common
LogFormat "%{Referer}i -> %U" referer
LogFormat "%{User-agent}i" agent
LogFormat "%b" bytes

Include conf.d/

Include the virtual host configurations:

Include sites-enabled/

why correct config to me, because apache2 used very more cpu