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Global settings: Difference between revisions
→Graph detail settings
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* Reduce graph resolution of old data by up to: The resolution of older graph data is automatically reduced to save memory and to allow a longer view into the traffic history. This option allows you to change this behaviour. With a reduction factor of 1/1 no reduction is done at all which means the selected graph resolution is available for the complete time. | * Reduce graph resolution of old data by up to: The resolution of older graph data is automatically reduced to save memory and to allow a longer view into the traffic history. This option allows you to change this behaviour. With a reduction factor of 1/1 no reduction is done at all which means the selected graph resolution is available for the complete time. | ||
:This reduces the time period to see historical data. You can choose to increase the reduction factor to store more data for a longer period. The time printed in parentheses represents the worst-case graph resolution based on the chosen resolution and reduction factor. | :This reduces the time period to see historical data. You can choose to increase the reduction factor to store more data for a longer period. The time printed in parentheses represents the worst-case graph resolution based on the chosen resolution and reduction factor. The reduction is done in multiple steps up to this limit. The newest data always has the highest resolution defined by the "Best graph resolution" setting above. Between 60 and 120 data points are stored at a minimum, so with default resolution of 1 second, between one and two minutes are available in the highest resolution. Due to internal compression, the exact number of data points cannot be foreseen but 60 data points are always available at least, usually much more. Once the limit is reached, data is reduced by a factor of two thus doubling the amount of time available in half resolution (2 to 4 minutes in 2 second resolution). When the next limit is reached, the data is halved again thus doubling the time again, until the configured reduction limit is reached. With default settings of one second resolution and reduction limit of 1/6, the worst resolution of 64 seconds (or 1 minute and 4 seconds) is reached not before 2 hours into the past. The drop down menu in graph view gives an exact number about the available graph resolution in the given time period. | ||