Drop in Power.BatteryDischargeRateWhileSuspended histogram data for Minnie |
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Issue descriptionThe data we are getting back for Power.BatteryDischargeRateWhileSuspended from Minnie devices shows an improvement from 100 mW to 10 mW from September, 2015 to January, 2016. We should dig into this to ensure that we are receiving accurate measurements. If we are receiving accurate measurements we should identify what led to this improvement so that we might utilize it on other devices if it is real. See the UMA data here: https://uma.googleplex.com/p/chrome/timeline_v2/?q=%7B%22day_count%22%3A%22365%22%2C%22end_date%22%3A%22latest%22%2C%22window_size%22%3A%227%22%2C%22filters%22%3A%5B%7B%22fieldId%22%3A%22short_hw_class%22%2C%22operator%22%3A%22COMPARE%22%2C%22study%22%3A%22%22%2C%22selected%22%3A%5B%22MINNIE%22%5D%7D%5D%2C%22histograms%22%3A%5B%22Power.BatteryDischargeRateWhileSuspended%22%5D%2C%22default_entry_values%22%3A%7B%22measureModel%22%3A%7B%22measure%22%3A%22%22%2C%22buckets%22%3A%5B%5D%2C%22percentiles%22%3A%5B%2250%22%5D%2C%22formula%22%3A%22%22%7D%2C%22zeroBased%22%3Atrue%2C%22logScale%22%3Afalse%2C%22showLowVolumeData%22%3Afalse%2C%22showVersionAnnotations%22%3Atrue%7D%2C%22entries%22%3A%5B%7B%22measureModel%22%3A%7B%22measure%22%3A%22percentile%22%2C%22buckets%22%3A%5B%220%22%5D%7D%7D%5D%7D
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Mar 7 2016
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Feb 17 2017
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Mar 18 2017
Activating. Please assign to the right owner and the appropriate priority.
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Apr 16 2018
This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue. Sorry for the inconvenience if the bug really should have been left as Available. For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
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Apr 16 2018
I'm guessing no one is planning to look at this.
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Apr 16 2018
Odds are there's nothing to fix. Quick glance at UMA data appears to still be showing the variation but there is a local maximum ~the expected suspend power (77-115mW). I'd speculate its just error in the gas gauge measurement at low current which smart battery spec allows IIRC. |
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Comment 1 by mshe...@chromium.org
, Mar 7 2016