Zabbix proxy not transmitting data zabbix server

[zmdpc]

After updating the template is connected to a large number hosts queue of items increased to a maximum of about 12 hours, and location in a such a state. What could cause such an effect? There are no errors in the log

conf proxy

ProxyMode=0
Server=хххх
HostnameItem=system.hostname
LogFile=/var/log/zabbix/zabbix_proxy.log
LogFileSize=10
DebugLevel=3
PidFile=/var/log/zabbix/zabbix_proxy.pid
DBName=хххх
DBUser=хххх
DBPassword=хххх
DBSocket=/var/run/mysqld/mysqld.sock
ProxyLocalBuffer=2
ProxyOfflineBuffer=12
ConfigFrequency=300
StartPollers=55
StartPollersUnreachable=12
StartTrappers=12
StartPingers=12
SNMPTrapperFile=/var/trapd/zabbix_traps.tmp
StartSNMPTrapper=1
CacheSize=256M
StartDBSyncers=10
HistoryCacheSize=128M
HistoryTextCacheSize=128M
Timeout=3
FpingLocation=/usr/bin/fping
SSHKeyLocation=/home/zabbix/.ssh 

conf server

LogFile=/var/log/zabbix/zabbix_server.log
LogFileSize=10
DebugLevel=3
PidFile=/var/log/zabbix/zabbix_server.pid
DBName=xxxxx
DBUser=xxxxx
DBPassword=xxxxxxx
DBSocket=/var/run/mysqld/mysqld.sock
StartPollers=10
StartPollersUnreachable=5
StartTrappers=15
StartPingers=3
StartTimers=5
CacheSize=350M
StartDBSyncers=10
HistoryCacheSize=32M
TrendCacheSize=64M
HistoryTextCacheSize=64M
ValueCacheSize=160M
Timeout=3
AlertScriptsPath=/usr/local/share/zabbix/alertscripts
ExternalScripts=/usr/local/share/zabbix/externalscripts
FpingLocation=/usr/bin/fping
Fping6Location=/usr/bin/fping6
SSHKeyLocation=/home/zabbix/.ssh

[ingus.vilnis]

Hi,

Check internal graphs for Zabbix server and proxies. Maybe data senders are busy on proxies. Maybe configuration syncers are busy on server.

Also you are not logging slow queries on your systems so it is recommended to use this option. Thus you will see if database performance is bad.

LogSlowQueries=3000

Best Regards,
Ingus