Disabling whoopsie by default in the 12.04.1 release

[Evan Dandrea]

On Tue, Aug 7, 2012 at 7:14 AM, Steve Langasek
<steve.langasek at ubuntu.com> wrote:
> Evan, can you provide some clarity here?  How many users is this average
> taken from?

It's currently using the total number of unique users for the day period:

[default at crashdb] get Counters [utf8('users:Ubuntu 12.04')];
...
=> (counter=20120801, value=54191)
=> (counter=20120802, value=52659)
=> (counter=20120803, value=51273)
=> (counter=20120804, value=45861)
=> (counter=20120805, value=48042)
=> (counter=20120806, value=54958)
=> (counter=20120807, value=33539)

This is wrong, as you've pointed out. Matthew has filed a bug for it here:
https://bugs.launchpad.net/daisy/+bug/1033913

Fixing this will not require any client-side changes.

> What's the standard deviation on the number of crashes per day?

Given the data we have specifically for 12.04, excluding today:

[default at crashdb] get Counters [utf8('oopses:Ubuntu 12.04')];
=> (counter=20120720, value=77821)
=> (counter=20120721, value=70931)
=> (counter=20120722, value=67626)
=> (counter=20120723, value=81136)
=> (counter=20120724, value=82249)
=> (counter=20120725, value=79902)
=> (counter=20120726, value=81455)
=> (counter=20120727, value=75325)
=> (counter=20120728, value=69669)
=> (counter=20120729, value=72365)
=> (counter=20120730, value=80259)
=> (counter=20120731, value=77617)
=> (counter=20120801, value=77398)
=> (counter=20120802, value=75483)
=> (counter=20120803, value=73580)
=> (counter=20120804, value=67283)
=> (counter=20120805, value=70334)
=> (counter=20120806, value=78391)

Mean: 75490.22222
Standard deviation: 4858.3275

In case you were asking that in terms of the average number of crashes
per day per user:
Mean: 1.44842
Standard deviation: 0.01867

> What's the turnover of users reporting crashes from day to day?  (I.e., it's
> quite different if the same 5000 users are reporting 1.4 crashes per day,
> than if 5000 *unique* users are reporting 1.4 crashes each day.) These are
> the kinds of information I think we need to have in order to make an
> informed decision.

We currently only count unique users per-release over the day period.
Matthew's bug will have us tracking the unique users seen in the past
90 day period. If there's some other interval you'd like to track, do
let me know. As before, this will require no client-side changes.