--- zfs-stats.orig	2021-06-05 15:18:56 UTC

+++ zfs-stats

@@ -366,6 +366,7 @@ sub _arc_summary {

 	### ARC Sizing ###

 	my $arc_size = $Kstat->{"kstat.zfs.misc.arcstats.size"};

+	my $arc_compressed_size = $Kstat->{"kstat.zfs.misc.arcstats.compressed_size"};

 	my $arc_uncompressed_size = $Kstat->{"kstat.zfs.misc.arcstats.uncompressed_size"};

 	my $mru_size = $Kstat->{"kstat.zfs.misc.arcstats.p"};

 	my $target_max_size = $Kstat->{"kstat.zfs.misc.arcstats.c_max"};

@@ -382,10 +383,12 @@ sub _arc_summary {

 		fPerc($target_min_size, $target_max_size), fBytes($target_min_size));

 	printf("\tMax Size (High Water):\t\t%d:1\t%s\n",

 		$target_size_ratio, fBytes($target_max_size));

+	printf("\tCompressed Data Size:\t\t\t%s\n",

+		fBytes($arc_compressed_size));

 	printf("\tDecompressed Data Size:\t\t\t%s\n",

 		fBytes($arc_uncompressed_size));

 	printf("\tCompression Factor:\t\t\t%s\n",

-		fRatio($arc_uncompressed_size, $arc_size));

+		fRatio($arc_uncompressed_size, $arc_compressed_size));

 	print "\nARC Size Breakdown:\n";

-