Re [0]: If you never want your data downsampled, keep data at a single resolution which is equal to the flush interval used to push data to Graphite. Carbon will never "change your data" under such a configuration.
Re [1]: How would you expect the presentation layer to present >n data points using n pixels?
Graphite doesn't "change your data". Presentation of data != the data itself, just as a map of a city != the city itself.
Re [1]: How would you expect the presentation layer to present >n data points using n pixels?
Graphite doesn't "change your data". Presentation of data != the data itself, just as a map of a city != the city itself.