memory segment信息详情
存储分段
segment───v.分割；（细胞）分裂；n.段，部分；（水果或花的）瓣，（动物的）节；弓形；音段；（广播或节目的）时间段
line segment───n.线段；n.[数]线段
alternate segment───交错弓形
segment routing───分段布线
segment fault───段故障，线段故障；[计]段故障
industry segment───工业部门；行业分部
aganglionic segment───无神经节细胞段
facilitated segment───促进部分
coarct segment───冠状节段
end address of the instance Shared memory segment is not fixed.───实例共享内存的结束地址是不固定的。
LCL - for memory segment used to communicate with local applications.───对于用于与本地应用程序通信的内存段，名称为：lcl。
Process a initializes the memory segment, preparing it for use.───进程A对这个内存段进行初始化，让它准备好接受访问。
This parameter specifies the maximum size in bytes of a shared memory segment which can be allocated on the system.───该参数按字节指定系统中可以分配的共享内存段的最大大小。
The SHMMAX specifies the maximum size in bytes of a shared memory segment which can be allocated on the system.───SHMMAX按字节指定系统上可以分配的最大共享内存段。
By default, some systems (including most BSD variants) have very low limits on the size of a shared memory segment.───默认时，有些系统（包括大多数BSD变种）的共享内存块大小非常低。
This program also allows you to display the subsystem shared memory segment for debugging purposes.───这个程序还允许您为调试目的显示子系统共享内存段。
Virtual memory segment: This virtual portion is used for maintaining and controlling the resources needed by processes.───虚拟内存段：虚拟区用于维护和控制进程所需的资源。
MAP_SHARED specifies that any changes to the memory segment should be "public" to all cooperating processes.───MAP_SHARED表示对这个内存段的任何修改应该向所有参与共享的进程“公开”。
However, a shared memory segment cannot be "split" across quadrants and be guaranteed a contiguous address space.