| Measurement |
Description |
Measurement
Unit |
Interpretation |
| Server_usage_metric
|
The current
utilization of the server. It is a value between 1 and 4. A value of 1
indicates light utilization while a value of 4 indicates high utilization of the
server. |
Number
|
If the server is
under high utilization for a prolonged period of time, it is
indicative of the server reaching its maximum capacity. |
| Used_thread_pct
|
The percentage of
threads associated with the client connections. This includes threads,
which may or may not be currently handling user requests. |
Percent
|
If this measure
reaches 100%, then the client connections are queued before execution.
In this situation, the total number threads spawn by the server can be
increased depending on the capacity. |
| Idle_thread_pct
|
The percentage of
threads associated with client connections, which are not currently
handling user requests. |
Percent
|
This measure is
indicative of the percent of threads waiting for further user
requests. |
| Request_rate
|
This measure
indicates the number of requests per second to the SilverStream
server. |
Reqs/Sec
|
A sudden
increase in this value indicates an unusual burst of requests for your
application server. This usually means that there is sudden high
activity on your application or abnormal/malicious attacks. |
| Mean_response_time
|
The average time
taken to process the requests coming to the Server. |
Secs
|
A sudden
increase in the mean response time is indicative of a bottleneck on
the application server. |
| Max_response_time
|
The maximum time
taken to process any request since the start of the server. |
Secs
|
A sudden
increase in the maximum response time is indicative of a bottleneck on
the application server. |
| Data_xmit_rate
|
The rate of
data transmitted by the server while serving client requests. |
KB/Sec
|
A large increase
in the data transmission rate can be indicative of an increase in the
popularity of one or more web sites hosted on the server. This measure
is directly related to Request_rate. |
| Memory_util
|
The percentage of
memory used by the SilverStream server inside the Java virtual machine
in which it is running. |
Percent
|
A sudden
increase in memory utilization may be indicative of memory leaks in
the applications running on the server. When this measure
reaches 100%, it indicates that the SilverSstream server has reached
its maximum capacity. |
| Total_sess_count
|
The total number
of sessions associated with the server. |
Number
|
This is
indicative of the number of user sessions maintained in the server. |
| Idle_sess_count
|
The number of
sessions associated with the server, which is in idle state. |
Number
|
This measure is
indicative of the number of user sessions waiting for further user
requests. |