Uniprocessor systems
The following standard values apply for online applications and batch applications
In the case of response-time-critical online applications, with uniprocessors a CPU workload of 70% should not be exceeded for the main application, because as the workload increases, the wait time in the queue ahead of the CPU rises disproportionately (see also section "Examining system performance with openSM2").
In the case of pure batch applications a CPU utilization of up to 100% is justifiable if the processing duration of the individual batch tasks in the system is not significant.
Multiprocessor systems
With multiprocessor systems the probability of finding a free CPU increases as more CPUs become available. Therefore higher workloads can also be tolerated. With response-time-critical applications the following CPU workloads should not be exceeded for the main application:
75% with 2 CPUs
80% with 4 CPUs
85% with 6 CPUs
90% with 8 or more CPUs