摘要:
Provided are method and device for managing a memory in a data stream management system (DSMS) of a portable device. The method includes moving data of a selected memory region that has a low priority to a secondary storage and storing a received data stream in the selected memory region.
摘要:
Provided are a method and apparatus for controlling load shedding for excluding data streams input into a data stream management system (DSMS). A method of selecting data not to be in the data process may be determined. A load shedding factor may also be determined. Data streams of the data process may be processed by applying the method of selecting the data according to the load shedding factor.
摘要:
A method is provided. The method includes in response to a new query or new input data being input, calculating a required minimum number of cycles per unit time which corresponds to the minimum number of cycles per unit time that is required to process the new query or the new input data, selecting a query to execute first, calculating the number of cycles to be processed during the time period set in advance by multiplying the calculated, required minimum number of cycles per unit time with a time period that is allocated to process the selected query or the input data and is set in advance, and putting a system into a dormant state for a remaining period of time in response to the calculated number of cycles being completely executed within the time period set in advance.
摘要:
Provided are a method and apparatus for controlling load shedding for excluding data streams input into a data stream management system (DSMS). A method of selecting data not to be in the data process may be determined. A load shedding factor may also be determined. Data streams of the data process may be processed by applying the method of selecting the data according to the load shedding factor.
摘要:
Provided are method and device for managing a memory in a data stream management system (DSMS) of a portable device. The method includes moving data of a selected memory region that has a low priority to a secondary storage and storing a received data stream in the selected memory region.
摘要:
Disclosed is a file accessing method of a file system which manages data by a block unit of a fixed size having an index and provides information associated with a file via a plurality of entries having an index and linked information of each of blocks forming the file. The file accessing method includes providing a hint information area to each of the plurality of entries so as to record an access mode or continuous allocation information for the file, allocating the plurality of blocks to record contents of the file, and recording the access mode in each of the hint information areas of entries corresponding to a first chain group of the allocated blocks and the continuous allocation information in the hint information area of at least one entry corresponding to a second chain group of the allocated blocks.
摘要:
A memory apparatus and an operation of the memory apparatus which allow quick booting are provided. The memory apparatus includes a volatile memory, a non-volatile memory, and a memory control unit to control input/output of data stored in the volatile memory and the non-volatile memory. The memory control unit restores data, according to a control command input from outside of the memory apparatus, from the non-volatile memory to the volatile memory in an on-demand fashion during booting.
摘要:
Disclosed is a file accessing method of a file system which manages data by a block unit of a fixed size having an index and provides information associated with a file via a plurality of entries having an index and linked information of each of blocks forming the file. The file accessing method includes providing a hint information area to each of the plurality of entries so as to record an access mode or continuous allocation information for the file, allocating the plurality of blocks to record contents of the file, and recording the access mode in each of the hint information areas of entries corresponding to a first chain group of the allocated blocks and the continuous allocation information in the hint information area of at least one entry corresponding to a second chain group of the allocated blocks.