Swap Test
Swap space is space on a hard disk used as the virtual memory extension of a computer's real memory (RAM). The least recently used files in RAM can be "swapped out" to the hard disk until they are needed later so that new files can be "swapped in" to RAM. Having an appropriate amount of swap space is important for optimal system performance.
Target of the test : A Solaris, Linux, AIX or HPUX system only
Agent deploying the test : An internal agent
Outputs of the test : One set of results for every server being monitored
Parameter | Description |
---|---|
Test Period |
How often should the test be executed. |
Host |
The host for which the test is to be configured. |
Detailed Diagnosis |
This parameter is applicable for Linux systems. To make diagnosis more efficient and accurate, the eG Enterprise embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test for a particular server, choose the On option. To disable the capability, click on the Off option. The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled:
|
Measurement | Description | Measurement Unit | Interpretation |
---|---|---|---|
Swap used |
Indicates the total swap space that is either allocated or reserved. |
MB |
|
Swap allocated |
Indicates the total swap space currently allocated for use as a backing store. |
MB |
This measure is not available for HPUX systems. |
Swap reserved |
Indicates the total amount of swap space not currently allocated but claimed for future use. |
MB |
This measure is not available for AIX and HPUX systems. |
Swap available |
Indicates the total swap space that is currently available for future reservation and allocation. |
MB |
|
Swap used percent |
Indicates the percentage of swap space that is allocated or reserved. |
Percent |
A value close to 100% indicates that the swap space configured may not be sufficient. A value close to 0 may imply that the swap space configured may be too large. The detailed diagnosis of this measure lists the Process ID, Swap utilization, Swap used and Arguments User. Using the detailed diagnostics, administrators can figure out the exact process that is allocated/reserved with maximum swap space. |
Swap queue |
Indicates the number of processes swapped out currently. |
Number |
Ideally, this value should be close to 0. This measure is not available for AIX systems. |