Extent restore performance using intelligent client-side recipe-based prefetching with multiple read streams

A computer-implemented method for improving read performance of a file in a client-server network using data pre-fetches, comprising:

• encoding an extent map identifying valid data of the file as extents;
• providing the extent map in an application hosted in a network client;
• providing, in a server of the network, a filesystem storing data of the file for the application;
• providing a plurality of transmission control protocol (TCP) connections between the network client and the file system;
• producing, by the network client a read request transmitted through a plurality of processing streams using the plurality of TCP connections to access the file from the filesystem;
• using, in the network client and upon the read request, the extent map to generate prefetch requests and execute read-ahead operations on the filesystem;
• and
• generating pre-fetch requests using the plurality of processing streams to perform pre-fetches of data on the file that land on only extents of the file.

A system for improving read performance of a file using data pre-fetches in a client-server network, comprising:

• a server hosting a filesystem storing data in storage for an application executed in the network;
• a network client hosting the application, the application providing an extent map identifying valid data of the file as extents, the network client further producing a read request using a plurality of processing streams to access the file from storage, and using the extent map to bring the extents into memory;
• a plurality of transmission control protocol (TCP) connections provided between the network client and the file system to transmit the plurality of processing streams;
• and
• a client processing component generating pre-fetch requests using the plurality of processing streams to perform pre-fetches of data on the file that land on only extents of the file to avoid the holes in the file.