In the simplest case, the page table is implemented as a set of dedicated high-speed hardware registers, which makes the page-address translation very efficient. However, this approach increases context-switch time, as each one of these registers must be exchanged during a context switch. 页表的...
Since each address space requires its own page table the overheads become greater as the system becomes more active. However, any increase in TLB capacity misses should be more than regained in lower refill costs from the efficient hardware walker. Note that a pathological case could skip over ...
Shin, I.: Reducing computational overhead of flash translation layer with hashed page tables. IEEE Transactions on Consumer Electronics 56, 2344–2349 (2010) Article Google Scholar Shin, I.: Light weight sector mapping scheme for NAND-based block devices. IEEE Transactions on Consumer Electronics...
and efficient utilization of physical memory, large pages are not typically used universally. Therefore, it is important to optimize their use and deploy them in a manner that will deliver the biggest performance improvement. The optimization of the use of large memory pages is beneficial in both...
; to proxy requests or to process the POST data in a memory efficient fashion. ; http://php.net/enable-post-data-reading ;enable_post_data_reading = Off ; Maximum size of POST data that PHP will accept. ; Its value may be 0 to disable the limit. It is ignored if POST data readin...
Efficient use of Oracle Database memory caches also reduces the load on related resources such as the latches, the CPU, and the I/O system. For best performance, you should consider the following: The cache should be optimally designed to use the operating system and database resources most...
Each process a pointer (mm_struct→pgd) to its own Page Global Directory (PGD) which is a physical page frame. This frame contains an array of type pgd_t which is an architecture specific type defined in <asm/page.h>. The page tables are loaded differently depending on the architecture....
The tradeoff is that copy_page_range is more * efficient than faulting. */ if (!(vma->vm_flags & (VM_HUGETLB | VM_NONLINEAR | VM_PFNMAP | VM_MIXEDMAP))) { if (!vma->anon_vma) return 0; } if (is_vm_hugetlb_page(vma)) return copy_hugetlb_page_range(dst_m...
More efficient management of RAM can reduce the cost, energy, or physical space required to support a given workload. Alternatively, more efficient management of RAM can allow a system to support a larger number of applications with good performance, given a fixed monetary, energy, or physical ...
Therefore, determining type relationships is easy and efficient. Thirdly, because shredded schemas are regular relational objects various relational views of the XML schema components can be exposed. For example, the different XML schema components (e.g., elements, attributes, types, wildcards) can ...