aurora-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Zameer Manji (JIRA)" <>
Subject [jira] [Commented] (AURORA-1827) Fix SLA percentile calculation
Date Wed, 23 Nov 2016 18:56:58 GMT


Zameer Manji commented on AURORA-1827:

I upgraded us to Guava 20. It has a [Quantiles|]
class and a [Stats|]
class that could be very helpful here.

> Fix SLA percentile calculation 
> -------------------------------
>                 Key: AURORA-1827
>                 URL:
>             Project: Aurora
>          Issue Type: Story
>            Reporter: Reza Motamedi
>            Priority: Trivial
>              Labels: newbie, sla
> The calculation of mttX (median-time-to-X) depends on the computation of percentile values.
The current implementation does not behave nicely with a small sample size. For instance,
for a given sample set of  {50, 150}, 50-percentile is reported to be 50. Although, 100 seems
a more appropriate return value.
> One solution is to modify `SlaUtil` to perform an extrapolation when the sample size
is small or when the corresponding index to a percentile value is not an integer. 

This message was sent by Atlassian JIRA

View raw message