diff --git a/check_linux_memory.py b/check_linux_memory.py
index 6798530..af1add6 100755
--- a/check_linux_memory.py
+++ b/check_linux_memory.py
@@ -2,6 +2,21 @@
 
 import sys
 
+important_lables = [
+		'MemTotal',		# RAM total
+		'OverallUsed',
+		'MemUsed',
+		'SwapTotal',	# swap total
+		'SwapUsed',		# swap used
+		'Buffers',		# RH6: temporary storage for raw disk blocks.
+		'Cached',		# RH6: physical RAM used as cache memory.
+		'SwapCached',	# RH6: memory that has once been moved into swap, then back into the main memory, but still also remains in the swapfile. This saves I/O, because the memory does not need to be moved into swap again.
+		'Active',		# RH6: buffer or page cache memory that is in active use. This is memory that has been recently used and is usually not reclaimed for other purposes.
+		'Inactive',		# RH6: buffer or page cache memory that are free and and available. This is memory that has not been recently used and can be reclaimed for other purposes.
+		'Dirty',		# RH6: waiting to be written back to the disk.
+		'Writeback',	# RH6: actively being written back to the disk.
+	]
+
 with open('/proc/meminfo', 'r') as f:
     lines = f.read().splitlines()
 
@@ -28,11 +43,11 @@ else:
 	exitstr = 'OK'
 
 multiout = []
-for label in ['MemTotal', 'OverallUsed', 'MemUsed', 'SwapTotal', 'SwapUsed']:
+for label in important_lables:
 	multiout.append('%s: %.4fGB' % (label, float(mem[label])/1024.0/1024.0))
 
 perfdata = []
-for label in ['MemTotal', 'OverallUsed', 'MemUsed', 'SwapTotal', 'SwapUsed']:
+for label in important_lables:
 	perfdata.append('%s=%dB;;;;' % (label, mem[label]*1024) )