If three services in a single-host system are running, what is the effective allocation limit of service 3 given a total memory allocation?

To determine the effective allocation limit for service 3 in a single-host system where three services are running, it's essential to understand how memory allocation works in such an environment. Typically, in systems like HANA, memory allocation is preset with certain maximum limits based on total system resources and service configuration.

If the total memory allocated for the host system is 30 GB and there are three services running, the effective allocation for each service would generally depend on the distribution of this total memory. In many configurations, including HANA, the memory might be divided based on given priorities or service requirements, while also considering a buffer or overhead for the system itself.

Given that the answer is 25 GB, this suggests that the other services collectively require a total of 5 GB, meaning that service 3 can utilize up to 25 GB of the total 30 GB allocation. This makes sense in practical terms, as it allows enough memory for other system operations while still providing a substantial allocation for service 3, promoting effective performance without risking resource starvation for the other tasks.

In summary, the 25 GB allocation reflects a realistic model of balancing resources among services, ensuring that while one service has a higher threshold, others can still operate effectively within system limits.