...记为Dirty Bit，而不立即写入主存，只有此行被替换时才写回主存； Cache写失效write miss时，L2多采用写分配法（Write Allocate），主存修改后并将修改行调入Cache（即L2 write miss时，分配L2空间） 写直达（Write-through）一一can never be dirty，即Cache从...
基于28个网页-相关网页
... Write Allocate 写分配 ; 写分配法 ; 写时申请 ; 按写分配 allocate memory 分配内存 ; 分配存储器 ; 分配的内存 allocate distribute 分配 ...
基于8个网页-相关网页
No-Write Allocate 非写分配 ; 写分配法
non-write-allocate 非写分配
no-write-allocate 非写分配
read-write-allocate 写操作分配
write-allocate caches 写分配高速缓存
no-write-allocate cache 非写分配高速缓存
Write Not Allocate 写不分配
Comparing with other cache store miss policies, cache adaptive write allocate policy avoids unnecessary memory traffic, reduces cache pollution and decreases memory queue full rate without increasing hardware overhead.
与传统的Cache写失效处理策略相比,Cache自适应写分配策略硬件代价小,避免了不必要的数据传输,降低Cache污染,减少存储管理队列阻塞的频率。
参考来源 - 高性能存储系统研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Special system calls, or requests to the UNIX kernel, allocate and free the memory and set permissions; common read and write operations put and get data from the region.
用特殊的系统调用(即对UNIX内核的请求)分配和释放内存并设置权限；通过一般的读写操作读写内存段中的数据。
The key to this optimization is that by delaying the allocation of physical blocks until they need to be written to the disk, more blocks are present to allocate and write in contiguous blocks.
这种优化的关键是延迟物理块的分配，直到需要在磁盘上写这些物理块时才对其进行分配并写到相邻的块。
When 2.4.6 gets to the point where it can't allocate any more VM, you obviously won't be unable to write any new data to your TMPFS filesystem.
如果2.4.6内核到了无法分配更多VM的程度，您显然不愿意不能向tmpfs文件系统写任何新数据。
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