Auto-tools/Projects/Alerts: Difference between revisions

Auto-tools/Projects/Alerts (view source)

290 bytes added , 6 July 2014

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 === Pulling Data ===
-Requesting a time time series is done by simply filtering the test results by product, branch, platform and test name.  ElasticSearch can pull months of Talos test results for any one combination in under a second.  Each test is made of many replicates, and those replicates are reduced to a single statistic and forwarded for analysis.  The statistic chosen is usually median; this statistic is more stable in the face of outliers in the replicates, and gives us some protection from bimodal data.
+ElasticSearch makes it a simple matter to count the number of unseen test results by product, branch, platform and test name.  These counts are returned in descending order; giving natural precedence to the tests that are furthest behind.
+Once it has decided which tests will be analyzed, requesting a time time series is done by simply filtering the test results by product, branch, platform and test name.  ElasticSearch can pull months of Talos test results for any one combination in under a second.  Each test is made of many replicates, and those replicates are reduced to a single statistic and forwarded for analysis.  The statistic chosen is usually median; this statistic is more stable in the face of outliers in the replicates, and gives us some protection from bimodal data.
 === Analysis ===