Services Monitoring is the monitoring of services used by an application (such as HTTP, SQL, MongoDB, AMQP, Redis, Memcached,…).
The Services data points are based on the Extended Traces. The number of calls to a service is an estimate based on the Sample Rate and the Extended Sample Rate. Low values for those rates may prevent the services from being detected and their spans computed.
Increasing the Sample Rate and the Extended Sample Rate enable to collect more data points and gain additional observability on key services.
The Response Time Break-Down graph displays the break-down of the global application response time across the application response time, and each service. The values are stacked on the graph.
The values displayed in the Response Time Break-Down graph are averaged values while the Global Response Time graph displays medians and the 96th percentile.
The average values are calculated over the total number of traces, including traces with 0 response times for this service.
Clicking on the entries label toggles their visibility and resets the graph scale.
The services having the highest impact are listed under the Top Services section.
The impact represents the percentage of time spent processing a call versus all the other ones. The services with the highest impact may be optimized first.
The list of Top Services can be sorted by Impact, Number of Calls, Response Time, or 96th percentile.
Clicking on the name of a service call in the Top Services list displays Monitoring data for this very service call.
The view displays the 96th percentile and the median response times, as well as the number of requests over time.
It lists all transactions containing the call.