Issue on ESX Asset Data collection

Hi,

I am having an issue on vwware. I have configured a VC in my console, and i have set Config Frequency as 15 mins. But the collections is happening correcly for few VMs and for few VMs the collection is taking very long time. I am not seeing any exceptions in the logs, i can see only the time duration.

I have done the coding for Asset Data gatherer and Asset data collection in JAVA. So do you have any idea on what is the possible reason of this delay in Asset Collection? I am also looking into the code if there is any issue. Your help is much appreciated.

Thanks,