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A comment on iPhone Performance Degrades as Battery Ages. Parent comment

Re:iPhone Performance Degrades as Battery Ages by izacus on Wednesday December 20, 2017 @05:46AM (#15968554)
The 2012 Nexus 7 is an outlier because it has especially bad flash controller - by 2015 most of the devices were unusable due to degraded flash. TRIM helped very little.

Other devices suffer from similar effects - not as bad, but most devices certanly lose quite a bit of I/O performance (especially writes) over time which makes OS run noticably slower.

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Re:iPhone Performance Degrades as Battery Ages by endorphone on Wednesday December 20, 2017 @12:45PM (#15971866)
Flash degradation literally only affects writes. Android has had TRIM since 2013. Writes in no universe make the OS run "noticeably slower" (or lead to "lag"), even if your claim was proven.

There are literally billions of Android devices. Benchmarking file system performance is trivial. Ergo, where are the benchmarks supporting your broad claims? This should be incredibly easy to demonstrate. We do know that it happened pre TRIM because people had factory new and after use benchmarks, and could show the decline.

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