Warn about small amounts of MB, not GB #4481

Job	Run time
Ruby analysis (macos-latest, linked)	1m 20s
Ruby analysis (macos-latest, default)	1m 1s
Ruby analysis (ubuntu-latest, default)	48s
Ruby analysis (ubuntu-latest, nightly-latest)	48s
Ruby analysis (ubuntu-latest, linked)	44s
Ruby analysis (macos-latest, nightly-latest)	1m 7s
	5m 48s

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