When looking at a diff across milestones, it can be useful to filter out the size impacts due to toolchain changes (e.g. compiler or R8 rolls).
You will need:
.size files of the milestones you'd like to diff..sizediff files of the commits to filter out.Then run:
tools/binary_size/supersize console M97.size M98.size clang_roll.sizediff ... size_info1: Loaded from 97.size size_info2: Loaded from 98.size size_info3: Loaded from clang_roll.sizediff size_info4: Loaded from clang_roll.sizediff >>> d = Diff(size_info1, size_info2) >>> d2 = Diff(size_info4, size_info3) # Note reversed order. >>> d.raw_symbols += d2.raw_symbols >>> SaveDeltaSizeInfo(d, 'm97_m98_normalized.sizediff') Saved locally to m97_m98_normalized.sizediff. To share, run: > gsutil.py cp m97_m98_normalized.sizediff gs://chrome-supersize/private-oneoffs Then view it at https://chrome-supersize.firebaseapp.com/viewer.html?load_url=https://storage.googleapis.com/chrome-supersize/private-oneoffs/m97_m98_normalized.sizediff