I want to try the HMB(host memory buffer) function with MS inbox NVMe driver. I have already install Win 10 Anniversary Edition but I don’t know how to enable through registry key. Could you kindly share the way to enable HMB function?
HMB全称 HostMemory Buffer主机内存缓冲器,属于NVM Express (NVMe)的基本特性之一。SSD肯定需要NAND闪存颗粒,同时由Controller主控调度,为了提升 随机读写性能,有些硬盘会设计一个外置硬件的DRAM高速缓存,用来 缓冲数据和存储 映射表(Map Table),主流比例是1000:1,也就是1GB容量搭配1MB缓存, 1TB的盘搭配1GB的缓存。性...
typedef union { struct { ULONG HMDLEC; } DUMMYSTRUCTNAME; ULONG AsUlong; } NVME_CDW15_FEATURE_HOST_MEMORY_BUFFER, *PNVME_CDW15_FEATURE_HOST_MEMORY_BUFFER; 成員DUMMYSTRUCTNAMEDUMMYSTRUCTNAME.HMDLEC指定主機記憶體描述元清單中的項目數。主機
typedefstruct{ULONGLONG BADD; ULONG BSIZE; ULONG Reserved; } NVME_HOST_MEMORY_BUFFER_DESCRIPTOR_ENTRY, *PNVME_HOST_MEMORY_BUFFER_DESCRIPTOR_ENTRY; 成员 BADD 指示此条目的主机内存地址与内存页大小对齐。 内存页大小在NVME_CONTROLLER_CONFIGURATION的MPS字段中定义。
StorPortAllocateHostMemoryBuffer會傳回下列其中一個狀態代碼: 傳回碼Description STOR_STATUS_SUCCESSPhysicalAddressRanges陣列包含一或多個代表主機記憶體緩衝區的有效實體位址範圍。 STOR_STATUS_INVALID_PARAMETER這可能表示大於最大值、非頁面對齊大小的最小值,或PhysicalAddressRanges是空的。
Group 3 NVM Feature的第4项是Host Memory Buffer Case1: Proper Structure 检查SSD是否支持HMB功能,如果不支持本case无效; Host发送Identify command给SSD(CNS=01h),获取Identify Controller data structure; 期望结果: SSD正常返回CQ; 检查Host Memory Buffer Preferred Size (HMPRE) field 大于等于 Host Memory Bu...
Host Memory Buffer (HMB) SSDs: The Basics For generations, SSDs have had DRAM inside of drives. In the data center space, that is also why we have seen generations of SSDs with large capacitors to provide power to the DRAM in the event of power loss. Thsee are features that add sig...
The Terminal will also need to meet our goals and measures to ensure it remains fast and efficient, and doesn't consume vast amounts of memory or power. The Windows Console Host The Windows Console host,conhost.exe, is Windows' original command-line user experience. It also hosts Windows' ...
A storage device may utilize a host memory buffer for re-ordering commands in a submission queue. Out of order commands in a submission queue that uses host virtual buffers that are not the same size may be difficult to search. Accordingly, commands in a submission queue may be correctly ord...
DxgkDdiMapCpuHostApertureis called to map an allocation that is resident in a local memory segment into the CPU host aperture in order to make it visible to the CPU. Syntax C++ DXGKDDI_MAPCPUHOSTAPERTURE DxgkddiMapcpuhostaperture;NTSTATUSDxgkddiMapcpuhostaperture( IN_CONST_HANDLE hAdapter, IN_CO...