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Pareto — Mobile Crash Signatures

Crash groups for the first seven days of an Android release against the release before it, computing that 4 of 11 signatures cause 81.5% of 13,753 crashes and showing an image-cache OOM regression displacing the previous ANR at the top.

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Android crash groups — release 8.4 vs 8.38.4 (first 7 days) vs 8.3 (first 7 days) · 11 categories · total 13,753 crashes · threshold 80%8.4 (first 7 days)8.3 (first 7 days)Cumulative %Cumulative % (8.3 (first 7 days))01,0002,0003,0004,0005,0000%20%40%60%80%100%80% threshold4,8201,1403,1703,3901,9852,2601,2401,1809031,47064072041538026831031243835.0%58.1%72.5%81.5%88.1%92.8%95.8%97.7%100%vital few · 4OOM in ImageCacheANR: main-thread disk readNPE in FeedAdapterSQLite database lockedIllegalState on resumeNetworkOnMainThreadForegroundServiceStartTransactionTooLargeOther4 of 11 categories (36%) account for 81.5% of 13,753 crashes.Vital few at 80%: OOM in ImageCache, ANR: main-thread disk read, NPE in FeedAdapter, SQLite database locked — 11,215 of 13,753 crashes.Those categories covered 70.6% of the 8.3 (first 7 days) total (11,288 crashes), against 81.5% of 8.4 (first 7 days).Movement vs 8.3 (first 7 days): left — IllegalState on resume.Other folds 3 categories under 1.5% of total (312 crashes, 2.3%).41.2 M sessions on 8.4 against 39.8 M on 8.3

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title "Android crash groups — release 8.4 vs 8.3"
unit crashes
period "8.4 (first 7 days)"
compare "8.3 (first 7 days)"
threshold 80%
other-below 1.5%
note "41.2 M sessions on 8.4 against 39.8 M on 8.3"

# signature                     8.4     8.3
"OOM in ImageCache"            4820    1140
"ANR: main-thread disk read"   3170    3390
"NPE in FeedAdapter"           1985    2260
"SQLite database locked"       1240    1180
"IllegalState on resume"        903    1470
"NetworkOnMainThread"           640     720
"ForegroundServiceStart"        415     380
"TransactionTooLarge"           268     310
"SecurityException: camera"     154     210
"DeadObjectException"            96     140
"WebView renderer gone"          62      88