1098422 - Move the frecency half-life experiment

Status: RESOLVED FIXED

(Core :: Networking: Cache, defect)

Description

[Honza Bambas (:mayhemer)]

According telemetry:

http://telemetry.mozilla.org/#filter=release%2F33%2FHTTP_CACHE_MISS_HALFLIFE_EXPERIMENT&aggregates=multiselect-all!Submissions&evoOver=Builds&locked=true&sanitize=true&renderhistogram=Graph
http://telemetry.mozilla.org/#filter=release%2F33%2FSTARTUP_HTTP_CACHE_MISS_HALFLIFE_EXPERIMENT&aggregates=multiselect-all!Submissions&evoOver=Builds&locked=true&sanitize=true&renderhistogram=Graph
http://telemetry.mozilla.org/#filter=release%2F32%2FHTTP_CACHE_MISS_HALFLIFE_EXPERIMENT&aggregates=multiselect-all!Submissions&evoOver=Builds&locked=true&sanitize=true&renderhistogram=Graph
http://telemetry.mozilla.org/#filter=release%2F32%2FSTARTUP_HTTP_CACHE_MISS_HALFLIFE_EXPERIMENT&aggregates=multiselect-all!Submissions&evoOver=Builds&locked=true&sanitize=true&renderhistogram=Graph

It's not obvious which time to use the best.  We could either experiment with different numbers (lower, like minutes only) or close with leaving 1d as the time default.

Comment 1

[Honza Bambas (:mayhemer)]

I'd like to change the experiment.  I believe the half-life value is moved way to much to the future.  We should work here with minutes, not hours.  Anything you visited twice or three times several hours or days in the past may become "more important" than a just visited page you want to navigate right now around and simply not sticking in the cache.

I'd like to restart the test to work with different values: 5 minutes, 15 minutes, 60 minutes and 360 minutes (=6 hours) working like a reference to the current experiment collected data.  This also needs a new probe, expire the current one and rework the browser.cache.frecency_half_life_hours pref to be minutes or float.

Comment 2

[Honza Bambas (:mayhemer)]

Attachment: v1

See comment 1.

Comment 3

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/integration/mozilla-inbound/rev/c58fc129232a

Comment 4

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/mozilla-central/rev/c58fc129232a