Abstract:
본 발명에 따르면, 글로벌 통신 네트워크에서 풍부한 웹 서버 활동 데이터를 수집하기 위한 방법 및 시스템이 제공되며, 요청된 정보 파일들은 다수의 네트워크 장치들에 캐싱되어 있다. 인터넷 상에서 웹 캐싱이 널리 보급됨에 따라, 기점 웹 서버는 웹 사이트 콘텐츠에 대한 요청의 대부분에 대해 서비스하지 않는다. 단일 픽셀 투명 GIF(Graphics Image Format) 요청이 웹 페이지의 HTML(HyperText Markup Language) 소스 파일에 부가된다. 웹 페이지를 작성하기 위해 클라이언트 브라우저가 검색해야만 하는 이미지의 수("히트") 및 웹 페이지로의 접속시에 얻어지는 추천자 식별자를 포함한, 보강된 웹 활동 데이터 정보를 내포하는 공통 게이트웨이 인터페이스(CGI) 문자열 데이터가 GIF 요청에 첨부된다. 단일 픽셀 투명 GIF 요청은 캐싱할 수 없으며, 그 결과 클라이언트 브라우저가 HTML 파일을 해석할 때 그 요청은 기점 웹 서버로 전송된다. 웹 페이지에 대한 정확한 히트 수를 누적하기 위해, 풍부한 데이터가 기점 웹 서버에 있는 로그 파일에 저장된다.
Abstract:
Generating approximate usage measurements for shared cache memory systems is disclosed. In one aspect, a cache memory system is provided. The cache memory system comprises a shared cache memory system. A subset of the shared cache memory system comprises a Quality of Service identifier (QoSID) tracking tag configured to store a QoSID tracking indicator for a QoS class. The shared cache memory system further comprises a cache controller configured to receive a memory access request comprising a QoSID, and is configured to access a cache line corresponding to the memory access request. The cache controller is also configured to determine whether the QoSID of the memory access request corresponds to a cache line assigned to the QoSID. If so, the cache controller is additionally configured to update the QoSID tracking tag.
Abstract:
Embodiments of the present invention provide a data sending method, a receiving method and a storage device, including receiving, by a first storage device, a first write data request sent by a host, where the first write data request carries data to be written and address information; adding a first number to the data to be written and address information, and writing the information to a cache, where the first number is a current time period number; reading the data to be written and address information corresponding to the first number from the cache; modifying the current time period number to identify information carried in a subsequent write data request; and sending the data to be written and address information to a second storage device. The present invention can increase efficiency of data replication.
Abstract:
A storage system in an embodiment of this invention comprises a non-volatile storage area for storing write data from a host, a cache area capable of temporarily storing the write data before storing the write data in the non-volatile storage area, and a controller that determines whether to store the write data in the cache area or to store the write data in the non-volatile storage area without storing the write data in the cache area, and stores the write data in the determined area.
Abstract:
A method and system to provide an analysis model to determine the specific problem(s) of a multi-threaded application. In one embodiment of the invention, the multi-thread application uses a plurality of threads for execution and each thread is assigned to a respective one of a plurality of states based on a current state of each thread. By doing so, the specific problem(s) of the multi-threaded application is determined based on the number of transitions among the plurality of states for each thread. In one embodiment of the invention, the analysis model uses worker threads transition counters or events to determine for each parallel region or algorithm of the multi-threaded application which problem has happened and how much it has affected the scalability of the parallel region or algorithm.