Cache Monitor 
Use
You can use the cache monitor to monitor the current status of all active caches. The data displayed in the cache monitor can be used for evaluations.
Features
To call up the Cache Monitor, choose System Administration ® Monitoring ® Knowledge Management ® Cache Monitor.
All active caches in the system are displayed in a list with the following entries:
Cache Monitor Entries
|
Entry |
Description |
|
Name |
Cache name |
|
Size |
Current size of cache in bytes. The size of the entries is not known for all caches. This is because not every program specifies this entry explicitly when an entry is generated. However, in the case of a Web repository manager, the size is given and can therefore be displayed. |
|
Capacity |
Capacity of the cache, specified during the configuration of the cache. |
|
Current |
Current number of entries in the cache. |
|
Peak |
Maximum number of entries ever stored in each cache. |
|
Added |
Number of objects that have been added to the cache since recording began. |
|
Removed |
Number of objects that have been removed from the cache since recording began. These objects have been overwritten by new objects, or have become invalid because they have exceeded the Entry Default Time to Live. |
|
Gets |
Sum of all successful access attempts to the cache entries. |
|
Hits |
Number of all successful access attempts to the cache entries. A successful access attempt means that the entry the system was searching for was found in the cache. |
|
Hits/Gets |
Ratio of hits to gets, specified as percentage value. The higher the value, the more effective the cache. |
Note that memory caches are reset when the portal is reset. This means that a restart sets the data displayed in the cache monitor back to zero.
Activities
You can carry out the following functions:
|
Function |
Description |
|
Refresh |
You use this function to update the contents of a table. |
|
Clear Cache |
You use this function to delete the contents of the cache. |
|
Reset Statistics |
You use this function to reset the statistics. The entries under Capacity and Current are retained. Ratio is set to 100%. |
|
Select All |
You use this function to select all caches. |
|
Deselect All |
If you have selected more than one entry, you can remove the selection using this function. |
You can sort the list displayed according to different criteria. Select the sort criteria you want from the sort field to do this. The arrow to the right of the sort field shows if the list is sorted in ascending or descending order. You can reverse the sort order by clicking on this arrow.
Evaluating Displayed Data
Depending on the scenario and the caches used, there are various ways of evaluating the data displayed in the cache monitor.
If the displayed peak value over a long period is significantly smaller that the capacity of the cache, you can reduce the capacity of the cache using Content Management ® Utilities ® Caches.
However, if the peak value and the current number of entries in the cache reach the maximum capacity value, increase the capacity of the cache.
For more information on this topic, see Caches .