A lot of semop and time functions while processing triggers

Zabbix server uses a lot of slow time function (next snipped is strace output)

(time(NULL)                              = 1406628281)

while processing one iteration of history syncer (triggers evaluation).
Also Zabbix server tries to expand user macros in trigger expression by one. In this case Zabbix locks cache a lot of ones.

Please look log file to get more information.