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Measures reported by AtgTest
Using the ATG server's SNMP interface, the AtgTest
test tracks the rate of requests processed by the server, the number of
requests waiting for processing, and the percentage of heap usage by the
server. While the rate of requests processed and the number of queued
requests can be indicative of performance problems with the ATG server, the
percentage heap usage can be indicative of the reason for the problem.
The measures made by this test are as
follows:
| Measurement |
Description |
Measurement
Unit |
Interpretation |
| Pct_memory_used |
Percentage of
heap space currently in use by the ATG Dynamo server |
Percent
|
When the heap
used percent reaches 100%, the server will start garbage collection
rather than processing requests. Hence, a very high percentage of heap
usage (close to 100%) will dramatically lower performance. In such a
case, consider increasing the heap size to be used. |
| Session_rate |
Indicates the
rate at which the sessions are created in the server. |
Sessions/Sec
|
A high session
rate can indicate a bottleneck on the ATG Dynamo server. |
| Current_sessions |
Indicates the
number of current sessions. |
Number
|
A high value
indicates an increased workload on the server. |
| Drp_request_rate |
Indicates the
request rate on the DRP server. |
Reqs/Sec
|
A high value
indicates that the dynamic request protocol (drp) server is over
loaded with requests. |
| Drp_response_time |
The time taken by
the DRP server to respond to the requests. |
Secs
|
An increasing
value indicates a bottleneck on the drp server and this could arise
due to the following reasons.
1. The drp
server is not available
2. The
server is being overloaded with requests
3. Some problem in the network
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