graphite-dev team mailing list archive

[Chris Davis <chrismd@xxxxxxxxx>]

There is the asPercent() function that can be used two ways:

# Calculate a percentage of one metric using another metric as a maximum
value
asPercent(resources.foo.utilized, resources.foo.capacity)

# Calculate a percentage of one or more metrics using a specific fixed
maximum value
asPercent(resources.*.utilized, 42)

The first kind is useful if you have a dynamic capacity to consider, the
latter when you have a fixed maximum known in advance. Both of these uses
will output a value 0 or greater (capped at 100 if the specified maximum is
correct).

-Chris


On Fri, Jan 29, 2010 at 12:40 PM, allan bailey <zirpubolci@xxxxxxxxx> wrote:

>
> Some of my users are asking for a percentile function to apply to graphs,
> especially groups.
>
> my thought is something like:
>
>    percentile(metrics_pattern, percentile, some_point_limit)
>
>   where metrics_pattern is either a single metric, or a group via * use.
>   percentile is just a float for the percentile.  .50, .90, .95, and .99
> are the typical use cases.
>   some_point_limit  is what i'm not certain about.
>
> If someone else has implemented this, please let me know.  Otherwise I'm
> going to figure out
> what makes sense for this and implement it.
>
> thanks,
> Allan
>
>
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