We have different levels of data flow coordinated by a set of saved searches. We divide them into three tiers where the data after 3rd tier is displayed on the dashboard. Everyday for 30-40 minutes, this data flow is interrupted. The internal logs show nothing out of the ordinary and data flow is stuck at tier 2 saved searches. There are no skipped saved searches as well during this time and the server health is at top notch as well. The trend of time range of the issue increases daily i.e. first day issue happened between 4-4:45, next day 5-5:45 and so on. Yesterday this happened between 10PM -10:45PM IST. There is no network connectivity issue as well as data is coming in tier 1 index. Please check the attached image.
It seems the server is having problem LDAP connection. It may be blocking the whole system while DNS resolution etc. Can you check if your LDAP search schedule matches the interruptions? And test by disabling LDAP searches?