Programs that want to allocate a large and contiguous area of memory but don't need it all immediately often use a combination of reserved and committed memory.
希望分配了大量连续内存区域但这些内存不马上同时使用的程序常常结合使用保留内存和提交内存。
Set aside an area of scoped memory large enough to perform the error-handling operation.
预留出足够大的作用域存储区来执行错误处理操作。
However, for systems in which a large number of processes are running, storing page tables in high memory can be enabled to squeeze more memory out of the low memory area.
不过，对于那些在大量进程在运行的系统来说，将页表存储到高端内存中可以在低端内存区域挤出更多的内存。
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