Invention Grant
- Patent Title: On-demand paging-in of pages with read-only file system
- Patent Title (中): 只读文件系统的按需分页
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Application No.: US12249701Application Date: 2008-10-10
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Publication No.: US08244954B2Publication Date: 2012-08-14
- Inventor: Perinkulam I. Ganesh , Rajeev Mishra , Grover H. Neuman , Mark D. Rogers
- Applicant: Perinkulam I. Ganesh , Rajeev Mishra , Grover H. Neuman , Mark D. Rogers
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Robert C. Rolnik; Libby Z. Toub
- Main IPC: G06F9/445
- IPC: G06F9/445

Abstract:
Disclosed is a computer implemented method and computer program product to resume a process at an arrival machine that is in an identical state to a frozen process on a departure machine. The arrival machine receives checkpoint data for the process from the departure machine. The arrival machine creates the process. The arrival machine updates a page table, wherein the page table comprises a segment, page number, and offset corresponding to a page of the process available from a remote paging device, wherein the remote paging device is remote from the arrival machine. The arrival machine resumes the process. The arrival machine generates a page fault for the page, responsive to resuming the process. The arrival machine looks up the page in the page table, responsive to the page fault. The arrival machine determines whether the page is absent in the arrival machine. The arrival machine transmits a page-in request to the departure machine, responsive to a determination that the page is absent. The arrival machine receives the page from the departure machine.
Public/Granted literature
- US20100095075A1 ON-DEMAND PAGING-IN OF PAGES WITH READ-ONLY FILE SYSTEM Public/Granted day:2010-04-15
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