yes

DEFAULT_SNMPDOPTS=  
change  and no result ?

#!/bin/sh
# kFreeBSD do not accept scripts as interpreters, using #!/bin/sh and sourcing.
if [ true != "$INIT_D_SCRIPT_SOURCED" ] ; then
   set "$0" "$@"; INIT_D_SCRIPT_SOURCED=true . /lib/init/init-d-script
fi
### BEGIN INIT INFO
# Provides:           snmpd
# Required-Start:     $network $remote_fs $syslog
# Required-Stop:      $network $remote_fs $syslog
# Default-Start:      2 3 4 5
# Default-Stop:       0 1 6
# Short-Description:  SNMP agents
# Description:        NET SNMP (Simple Network Management Protocol) Agents
### END INIT INFO
#
# Author:    Jochen Friedrich <jochen@scram.de>
#

DESC="SNMP Services"
DAEMON=/usr/sbin/snmpd
PIDFILE="/run/snmpd.pid"

# Defaults
OLD_MIBS_DIR="/usr/share/mibs/site:/usr/share/snmp/mibs:/usr/share/mibs/iana:/usr/share/mibs/ietf:/usr/share/mibs/netsnmp"
MIBS_DIR="/usr/share/snmp/mibs:/usr/share/snmp/mibs/iana:/usr/share/snmp/mibs/ietf"
export MIBDIRS="$MIBS_DIR:$OLD_MIBS_DIR"

#DEFAULT_SNMPDOPTS="-Lsd -Lf /dev/null -u Debian-snmp -g Debian-snmp -I -smux,mteTrigger,mteTriggerConf"
DEFAULT_SNMPDOPTS=" -Lsd -Lf /dev/null -u Debian-snmp -g Debian-snmp -I -smux, -I -interface -I -ipAddressTable -I -ifTable -I-ifXTable -I-var_route, -I -ipCidrRouteTable, -I -inetCidrRouteTable"
[ -z "$SNMPDOPTS" ] && SNMPDOPTS=$DEFAULT_SNMPDOPTS

DAEMON_ARGS="$SNMPDOPTS -p $PIDFILE"

do_start_prepare()
{
       # remove old symlink with previous version
       if [ -L /var/run/agentx ]; then
               rm -f /var/run/agentx
       fi
       if [ ! -d /var/run/agentx ]; then
               mkdir -p /var/run/agentx
       fi
}

no result

/lib/systemd/system/snmpd.service

do you have  it ?

yes

show pls

[Unit]
Description=Simple Network Management Protocol (SNMP) Daemon.
After=network.target
ConditionPathExists=/etc/snmp/snmpd.conf

[Service]
Environment="MIBSDIR=/usr/share/snmp/mibs:/usr/share/snmp/mibs/iana:/usr/share/snmp/mibs/ietf:/usr/share/mibs/site:/usr/share/snmp/mibs:/usr/share/mibs/iana:/usr/share/mibs/ietf:/usr/share/mibs/netsnmp"
Environment="MIBS="
Type=simple
ExecStartPre=/bin/mkdir -p /var/run/agentx
ExecStart=/usr/sbin/snmpd -Lsd -Lf /dev/null -u Debian-snmp -g Debian-snmp -I -smux,mteTrigger,mteTriggerConf -f -p /run/snmpd.pid
ExecReload=/bin/kill -HUP $MAINPID

[Install]
WantedBy=multi-user.target

ExecStart=/usr/sbin/snmpd -Lsd -Lf /dev/null -u Debian-snmp -g Debian-snmp -I -smux,mteTrigger,mteTriggerConf -f -p /run/snmpd.pid

change this

/usr/sbin/snmpd -Lsd -Lf /dev/null -u Debian-snmp -g Debian-snmp -I -smux  -I -interface -I -ipAddressTable -I -ifTable -I-ifXTable -I-var_ro

i change and in ps ax

31175 ?        Rs     0:02 /usr/sbin/snmpd -Lsd -Lf /dev/null -u Debian-snmp -g Debian-snmp -I -smux  -I -interface -I -ipAddressTable -I -ifTable -I-ifXTable -I-var_ro

yes

work not have 98% cpu

merci

:)

but you cant get stats from all interfaces

yes