We have a Mango 3.7.4 with about 590DS configured and about 10,000DP. We are observing that when starting it is taking us between 8 and 10 min to do it as we see in the ma.log file. Is this a normal time for this volume of data? Are there any settings that can improve boot time?
Handle start time
Its likely all the datasources. I have a similar set up to yourself but have given the system plenty of grunt. In doing so mango starts in less than 5 mins, prob around 3. Plenty of ram is the story with java applications.
V4 will give you the option is increase the number of threads used for starting data sources. You may also want to think about using MySQL for a system that size. But to answer your question I don't see anything abnormal with that starting time.