# How Many Rollup Methods Does Cloud Eye Support?

Cloud Eye supports the following rollup methods:

- Average

  If Avg. is selected for Statistic, Cloud Eye calculates the average value of metrics collected within a rollup period.

- Maximum

  If Max. is selected for Statistic, Cloud Eye calculates the maximum value of metrics collected within a rollup period.

- Minimum

  If Min. is selected for Statistic, Cloud Eye calculates the minimum value of metrics collected within a rollup period.

- Sum

  If Sum is selected for Statistic, Cloud Eye calculates the sum of metrics collected within a rollup period.

- Variance

  If Variance is selected for Statistic, Cloud Eye calculates the variance value of metrics collected within a rollup period.

  Take a 5-minute period as an example. If it is 10:35 now and the rollup period starts at 10:30, the raw data generated between 10:30 and 10:35 is rolled up.

Parent topic: General Consulting