diff -r d910ca4e995b -r b0238fc496af mercurial/revlogutils/debug.py
--- a/mercurial/revlogutils/debug.py	Wed Jun 01 01:32:54 2022 +0200
+++ b/mercurial/revlogutils/debug.py	Wed Jun 01 01:43:17 2022 +0200
@@ -104,6 +104,11 @@
     return hexfn(p_entry[constants.ENTRY_NODE_ID])
 
 
+@debug_column(b"full-size", size=20, verbose=True)
+def full_size(index, rev, entry, hexfn):
+    return b"%d" % entry[constants.ENTRY_DATA_UNCOMPRESSED_LENGTH]
+
+
 def debug_index(
     ui,
     repo,