关于虚拟内存页的默认大小问题

System Model: IBM,9117-570
Machine Serial Number: 063A620
Processor Type: PowerPC_POWER5
Number Of Processors: 8
Processor Clock Speed: 2198 MHz
CPU Type: 64-bit
Kernel Type: 64-bit
LPAR Info: 2 APP1
Memory Size: 28672 MB
Good Memory Size: 28672 MB
Platform Firmware level: SF240_320
Firmware Version: IBM,SF240_320
Console Login: enable
Auto Restart: true
Full Core: false

系统为AIX 5.3

以上是我们的机器型号，想了解一下这个系统默认的虚拟内存页大小是多少，一般是4K，听说这个系统是64K，请确认