While sampling an address space, the sampling engine detected that system wide auxiliary storage utilization has exceeded a tolerable threshold (60%) and the sampling session is terminated.

The sampling engine records measurement data to a data space while sampling is active. A sampling data space can grow to a maximum size of 2GB, which is backed by auxiliary storage. Auxiliary storage shortages can cause severe performance degradation. The sampling engine monitors auxiliary storage utilization from the start of sampling. If at any time during sampling the threshold is exceeded, sampling is terminated.

Application Performance Analyzer sampling monitors system wide auxiliary storage utilization, therefore exceeding the threshold might or might not be the result of a sampling session. If the error occurs early on in the sampling session then it is very likely that auxiliary storage utilization was near or at the threshold at the time sampling started.