可以使用 onstat -g rbm 命令显示共享内存常驻段中可用和已使用的 block 的十六进制位图。
图: onstat -g rbm 命令输出
Block bitmap for resident segment address 0x44000000:
address = 0x440003bc, size(bits) = 3035
used = 3031, largest_free = 4
0:ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
256:ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
512:ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
768:ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
1024:ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
1280:ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
1536:ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
1792:ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
2048:ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
2304:ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
2560:ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
2816:ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffe00