One Thousand host upload data to zabbix server

[jrjong]

Check log files for the Zabbix server and Mysql.
Increase trapper number in Zabbix configuration file and trapper timeout:

1. StartTrappers=<increase gradually, start with 10>
2. TrapperTimeout=300

Also, check and increase the roadrunner email number of connections in the MySQL configuration file:

1. max_connections = <increase gradually, start with 300>

If that doesn't help than put samo random delay on scripts/commands that are using zabbix_sender so that the Zabbix server doesn't receive all trapper data at the same time.