122
edits
Memory extension: Difference between revisions
Jump to navigation
Jump to search
no edit summary
No edit summary |
No edit summary |
||
| Line 3: | Line 3: | ||
This is a BETA feature which is subject to change in future firmware versions. It is only recommended to be used for very fast flash based storage devices and devices with low load. | This is a BETA feature which is subject to change in future firmware versions. It is only recommended to be used for very fast flash based storage devices and devices with low load. | ||
The configuration dialog allows to check the speed of | The configuration dialog allows to check the speed of an active storage device. | ||
*Excellent performance: this result can only be reached on very fast U.2 or PCIe flash devices, such as Intel Optane storage. This class of devices can be used for low to medium traffic load. | *Excellent performance: this result can only be reached on very fast U.2 or PCIe flash devices, such as Intel Optane storage. This class of devices can be used for low to medium traffic load. | ||
| Line 11: | Line 11: | ||
Spinning hard disc drives are in general not recommended to be used for this feature. | Spinning hard disc drives are in general not recommended to be used for this feature. | ||
The configuration dialog allows to choose | The configuration dialog allows to choose the storage device to use and the size of the memory extension. Larger values does not automatically increase the history time, as only part of the historical data ca be swapped out. As long as the usage is not reaching 100%, there is no need to increase the memory extension. | ||
Recommended size values: | Recommended size values: | ||
| Line 22: | Line 22: | ||
To disable the memory extension, first disable the feature and then restart the packet processing in the administration menu. | To disable the memory extension, first disable the feature and then restart the packet processing in the administration menu. | ||
Note: The storage device cannot be deactivated as long as the memory extension is enabled. | Note: The used storage device cannot be deactivated as long as the memory extension is enabled. | ||
Tip: Since only data that is no longer changing can be swapped out onto the storage device, the graph detail settings can be adjusted to make more information available for external memory. The graph resolution reduction can be adjusted to lower values. It will however also make showing graph data slower for larger time periods so the best value depends on the actual amount of data stored and the use case. It is possible to start with a value of 1/1 for the reduction parameter and increase it, if the overall performance is not good enough. | Tip: Since only data that is no longer changing can be swapped out onto the storage device, the graph detail settings can be adjusted to make more information available for external memory. The graph resolution reduction can be adjusted to lower values. It will however also make showing graph data slower for larger time periods so the best value depends on the actual amount of data stored and the use case. It is possible to start with a value of 1/1 for the reduction parameter and increase it, if the overall performance is not good enough. | ||