Huawei Technologies Co., Limited

Chinese Academy of Sciences

Jin Xiong

Zhuo Chen

Dejun Jiang

Mingyu Chen

Fei Xia

Wei Wei

Meng Ye

Wenqing Xu

Lixin Zhang

Tingyu Zhu

Ruizhuang Zhao

Liuying Ma

Zhenqing Liu

Zigang Zhang

The present invention proposes a dynamic resources allocation method and system for guaranteeing tail latency SLO of latency-sensitive applications. A plurality of request queues is created in a storage server node of a distributed storage system with different types of requests located in different queues, and thread groups are allocated to the request queues according to logical thread resources of the service node and target tail latency requirements, and thread resources are dynamically allocated in real time, and the thread group of each request queue is bound to physical CPU resources of the storage server node. The client sends an application's requests to the storage server node; the storage server node stores the request in a request queue corresponding to its type, uses the thread group allocated for the current queue to process the application's requests, and sends responses to the client.

Dynamic resources allocation method and system for guaranteeing tail latency SLO of latency-sensitive application

Slow feeder bowl

A data operating method, device, and system are provided and relate to the computer field, so as to resolve a prior-art problem of low efficiency of performing a data operation on a block device by a CPU. The method includes: receiving an operation instruction sent by a CPU; when the operation instruction is a read instruction, reading a first data block in the block device and returning to-be-read data in the first data block to the CPU; or when the operation instruction is a write instruction, writing, into a cache, to-be-written data indicated by the write instruction, and writing, into the block device, a second data block that includes the to-be-written data. The method is used to operate data in a block device.

Data operating method, device, and system

A data operating method, device, and system are provided. The method includes: receiving an operation instruction sent by a CPU; when the operation instruction is a read instruction, reading a first data block in the block device and returning to-be-read data in the first data block to the CPU; or when the operation instruction is a write instruction, writing, into a cache, to-be-written data indicated by the write instruction, and writing, into the block device, a second data block that includes the to-be-written data. The method is used to operate data in a block device.

A data caching method and a computer system are provided. In the method, when a miss of an access request occurs and a cache needs to determine a to-be-replaced cache line, not only a historical access frequency of the cache line but also a type of a memory corresponding to the cache line needs to be considered. A cache line corresponding to a DRAM type may be preferably replaced, which reduces a caching amount in the cache for data stored in a DRAM and relatively increase a caching amount for data stored in an NVM. For an access request for accessing the data stored in the NVM, corresponding data can be found in the cache whenever possible, thereby reducing cases of reading data from the NVM. Thus, a delay in reading data from the NVM is reduced, and access efficiency is effectively improved.

Data caching method and computer system

Equipment and a method for circulating fluidized bed semidry simultaneous desulfurization and denitration of a sintering flue gas, comprising an ozone generator (), a diluting blower (), a mixing buffer tank (), an ozone distributor (), and a circulating fluidized bed (CFB) reactor tower (). When evenly mixed by the mixing buffer tank (), ozone is injected into a flue (') via the ozone distributor (); and, an oxidized flue gas is introduced into the CFB reactor tower (), where NOx, SO, and SOin the flue gas are reacted with a Ca-based absorbent under the action of atomized water in the reactor tower, thus implementing simultaneous removal of SOand NOx. This provides the characteristics of a simple system, great performance, small footprint, and inexpensive investments.

Equipment and method for circulating fluidized bed semidry simultaneous desulfurization and denitration of sintering flue gas

The present invention provides a metadata storage system and a management method for a cluster file system. The metadata of the cluster file system is stored by using a DRAM+SSD+HDD three-tier architecture, and the metadata is written sequentially into a metadata buffer in the DRAM based on write-in time. When a metadata buffer fully written, it is written back into the SSD sequentially to form a new metadata storage unit, and corresponding metadata index information in a header structure thereof is stored into the DRAM in a form of a metadata index unit.

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Beijing, China

Jin Xiong