以上来源于: WordNet
On 32-bit systems, the default address-space model is that it USES a single segment for user and stack data with a maximum aggregate size close to 256 MB.
在32位系统上，默认的地址空间模型是对于用户和堆栈数据使用单一数据段，最大总大小接近256 MB。
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。
The shmmax specifies the maximum size in bytes of a Shared memory segment which can be allocated on the system.
shmmax按字节指定了系统中可以分配的最大共享内存段。
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