Open Stack

Thanks for your suggestion. :)


在 2012-12-19，下午7:01，Julien Danjou <julien at danjou.info> 写道：

> On Wed, Dec 19 2012, Brooklyn Chen wrote:
> 
>> 1. Displaying data
>> There are 3 kinds of data:
>> 
>> |    Type    |                  Definition                  |
>> |------------|----------------------------------------------|
>> | Cumulative | Increasing over time (instance hours)        |
>> |------------|----------------------------------------------|
>> | Gauge      | Discrete items (floating IPs, image uploads) |
>> |            | and fluctuating values (disk I/O)            |
>> |------------|----------------------------------------------|
>> | Delta      | Changing over time (bandwidth)               |
>> 
>> Shall we use chart or just table to show these data?
>> Table view is easy to implement but it's not intuitive.
> 
> You can use charts. The main difference between the 3 is:
> - a chart with cumulative should be of for example line and will always
>  increase
> - a chart with gauge is more likely an area, it increases or decreases,
>  whatever, you can use bars or anything (thinks about it like temperatures)
> - delta are more likely discrete events, so if you draw a chart it's
>  likely to be bar representing what has just been consumed at the time
>  of the event (thing about it like the money you spend everyday).
> 
> -- 
> Julien Danjou
> // Free Software hacker & freelance
> // http://julien.danjou.info