Revision as of 08:39, 12 January 2011

Design

Designed by Chris Howse

split up JSON files as discussed in status meeting
- look into constraining by date range
mini-manifest, return only requested testid/branchid/platformid
- e.g. http://graphs-stage2.mozilla.org/api/test?attribute=short&testid=1&branchid=1&platformid=1
~~set Last-Modified headers on all JSON feeds~~
- ~~especially the manifest!~~
- ~~already setting 15m Expires/Cache-control max-age~~
~~add caching proxy (varnish, etc)~~
improve charting performance
- ~~forcing lineWidth to 1 seems to make a huge difference~~
  - ~~however does not look as good, not pushing to stage until further investigation~~
- "double-buffering" canvas for flot
  - stack overflow discussion
  - custom chart is much faster if each series is written to a hidden canvas then shown when they are all complete
- ~~use node.js to generate static images for dashboard?~~
  - ~~flot group post~~
    - ~~requires a text plugin for flot, to get the ticks into the canvas instead of flot's default of appending styled divs~~
- ~~look into reducing number of points~~
  - ~~flot plots way more than is actually useful when graphs are very dense, flot group discussion~~
- look into flot alternatives

stand up vhost with old graphserver, pointing at nightly database, for QA comparison
set up lint and tests on Hudson
- selenium tests (in progress)
  - show these to QA to run on their Hudson
- qUnit/env.js unit tests for JS code
stand up auto-update for code (5 minutes) and DB (nightly)
(QA) compare actual submitted data to JSON, and confirm in interface
make sure proper changeset range is shown for checkins
- check with catlee on how the tree-management script does this
- follow-up irc convo w/ ted on catlee on changesets coalescing

embed ->
- need loading indicator for individual series
- tooltips can be hidden by top of screen
custom chart ->
- series controls change plot daterange
  - str: add multiple data series and change daterange pulldown before all are loaded

@@ Line 58: / Line 58: @@
 **** spoke to author (John Schulz, jsno.de/) who linked [https://gist.github.com/752371 the code] behind http://jsno.de./flot/
 **** requires a [http://www.lessaworld.com/projects/flotCanvasText/ text plugin for flot], to get the ticks into the canvas instead of flot's default of appending styled divs</strike>
-** look into reducing number of points
+** <strike>look into reducing number of points
-*** flot plots way more than is actually useful when graphs are very dense, [https://groups.google.com/forum/#topic/flot-graphs/n4ErDe4Q2Rc flot group discussion]
+*** flot plots way more than is actually useful when graphs are very dense, [https://groups.google.com/forum/#topic/flot-graphs/n4ErDe4Q2Rc flot group discussion]</strike>
-*** could filter out points on the server side, using e.g. [http://en.wikipedia.org/wiki/K-means_clustering k-means clustering]
 ** look into flot alternatives
 *** [http://highcharts.com/ highcharts]