commit | 08757aa8221a55004d3ab0a6405c8e0113554fa7 | [log] [tgz] |
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author | Prathmesh Prabhu <pprabhu@chromium.org> | Wed May 15 17:17:33 2013 -0700 |
committer | ChromeBot <chrome-bot@google.com> | Thu Jun 27 18:31:54 2013 -0700 |
tree | b4c5da50fcf390acbb45dae2d655440b6b183514 | |
parent | 727e0208640b47ab9079e75b6b3187563f03ccf6 [diff] |
cellular: Upload UMA stats for 3GPP delayed registration drop. crbug.com/238820 ensures that small glitches in 3GPP bearer registration do not cause connection drop. These glitches were originally observed for E362 modem. Upload UMA stats to figure out if the workaround should be restricted to devices with E362. BUG=chromium:241231 TEST=(1) build and run unit-tests. (2) Check that the following increments the value of the histogram Network.Shill.Cellular.3GPPRegistrationDelayedDrop in chrome://histograms on DUT. - Connect to cellular network on DUT. - Move the DUT to an area with bad reception, so that cellular connection is dropped. - Check that the histogram value for '0' is incremented and value for '1' remains unchanged. (3) Check that the following increments the value of the histogram Network.Shill.Cellular.3GPPRegistrationDelayedDrop in chrome://histograms on DUT. - Connect to cellular network on DUT. - Move the DUT to an area with bad reception so that signal strength goes down to 0. Return to an area with good reception within 10 seconds. - Ensure that the cellular connection is never dropped. - Check that the histogram values for '0' and '1' are incremented. Change-Id: Ic24ca0293226cefd4d334aec48a331a8b1f9b401 Reviewed-on: https://gerrit.chromium.org/gerrit/51398 Reviewed-by: Thieu Le <thieule@chromium.org> Commit-Queue: Prathmesh Prabhu <pprabhu@chromium.org> Tested-by: Prathmesh Prabhu <pprabhu@chromium.org>