Essbase uses additional memory while it works with the caches.
The calculation for this cache-related overhead uses the following factors:
Index cache (value MB from Table 250, Worksheet: Estimating Memory Requirements for a Database)
The number of server threads (value MJ from Table 249, Worksheet: Factors Used to Calculate Database Memory Requirements)
To calculate the cache-related overhead at startup:
Calculate half the index cache size, in bytes.
index cache size * .5 = index cache-related overhead
Calculate additional cache overhead in bytes using the following formula:
((# of server threads allocated to the Essbase Server process * 3) * 256) + 5242880 bytes = additional cache overhead
Sum the index cache overhead plus the additional cache overhead.
cache-related overhead = index cache-related overhead + additional cache overhead
Write the result to the cell labeled MC in Table 250, Worksheet: Estimating Memory Requirements for a Database.