Data page caching method for file system of solid-state hard disc
A solid-state hard disk and file system technology, which is applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problem that the software cannot effectively manage the cache, does not consider the read-write asymmetry of the solid-state hard disk, and cannot be well alleviated. I/O performance bottlenecks and other problems, to achieve the effect of improving access performance, high hit rate, and fast search speed
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[0039] Such as image 3 As shown, the implementation steps of the data page caching method for the solid state disk file system in the embodiment of the present invention are as follows:
[0040] 1) Establish a buffer linked list for caching data pages in the cache;
[0041] 2) Cache the data pages read in the solid-state disk in the buffer linked list for access, and classify the data pages in the buffer linked list into cold clean pages, hot clean pages, and cold dirty pages in real time according to the access status and write access status of the data pages pages and hot dirty pages;
[0042] 3) When there is no free space in the buffer linked list, first search for a data page in the buffer linked list according to the priority order of cold clean page, hot clean page, cold dirty page, and hot dirty page as the page to be replaced, and then compare the page to be replaced with The new data pages read from the SSD are replaced.
[0043] In this embodiment, cache refers ...
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