17:47	2021/3/17						
free							
	total	used	free	shared	buffers	cached	
Mem:	248544	179128	69416	2372	3076	132392	204884
-/+	buffers/cache:	43660	204884				
Swap:	0	0	0				
							
8:31	2021/3/18						
free							
	total	used	free	shared	buffers	cached	
Mem:	248544	179060	69484	2372	3076	132392	204952
-/+	buffers/cache:	43592	204952				
Swap:	0	0	0