The Application Resource Measurement Standard
The Application Resource Measurement (ARM) standard aims to instrument application response times. The intent is to measure end-to-end response time by tagging each ARM call with a transaction identifier and tracking these transactions as they move from system to system. If a user transaction slows down, the system in the end-to-end chain of measurements that shows the biggest increase in response time can be pinpointed.
This technique sounds very useful, and there is both good and bad news about ARM. The good news is that all vendors support the one standard, and several implementations exist, from Hewlett-Packard and Tivoli (who jointly invented the standard) to the more recently developed BMC Best/1 ...
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