The zabbix_agent process is consuming between 1% and 3% of CPU, and although it seems minimal, it's enough to irritate our users of those systems.

This is not an excessive usage of CPU, but if we compare it with other principal process (java, oracle) the difference is quite important (java~0.5%, oracle~0.5%) .

If we use the "truss" command on solaris to see the system/library calls and the signals made/received by the pid zabbix process, we can see that zabbix_agent process does a "kstat" call every second.