Measured: one log, plain and gzip

Same counts with or without the wrapper

Plain logGzip copy of the same log

_count, plain5001
_count, gzip5001
level=ERROR hits, plain1250
level=ERROR hits, gzip1250

Bars are drawn to scale against 5001. The gzip index recorded ax_format as logs(gzip). Source: the capture on the gzip logs page. This is the log family; no .csv.gz or .json.gz run was measured.