Hi nagios list, I've problem with service/host check latency with service more than 1000 and host more than 100. Please advise me to tune-up as my requirement. My requirement need service check & alert not more than 5 minutes. All alert must check interval 3 times before alert. The server cpu usage/memory use only 50% only. The nagios summary show on ======================================= HOST SCHEDULING INFORMATION --------------------------- Total hosts: 170 Total scheduled hosts: 170 Host inter-check delay method: NONE Host inter-check delay: 0.00 sec Max host check spread: 5 min First scheduled check: Thu Sep 20 20:05:13 2007 Last scheduled check: Thu Sep 20 20:05:13 2007 SERVICE SCHEDULING INFORMATION ------------------------------- Total services: 1101 Total scheduled services: 1101 Service inter-check delay method: NONE Inter-check delay: 0.00 sec Interleave factor method: SMART Average services per host: 6.48 Service interleave factor: 7 Max service check spread: 5 min First scheduled check: Thu Sep 20 20:05:13 2007 Last scheduled check: Thu Sep 20 20:05:13 2007 CHECK PROCESSING INFORMATION ---------------------------- Service check reaper interval: 3 sec Max concurrent service checks: Unlimited PERFORMANCE SUGGESTIONS ----------------------- * Host checks might be scheduled too closely together - consider increasing 'check_interval' option for your hosts ======================================= Thank in advance Gillnaldo - <hr size=1>Moody friends. Drama queens. Your life? Nope! - their life, your story. <a href="http://us.rd.yahoo.com/evt=48224/*http://sims.yahoo.com/">Play Sims Stories at Yahoo! Games. </a>