System of compressing the tail of a sparse log stream of a multi

Details System of compressing the tail of a sparse log stream of a multi System of compressing the tail of a sparse log stream of a multi

1997-03-28

2000-09-26

Luu, Le Hien

Electrical computers and digital processing systems: multicomput

Computer network managing

Computer network monitoring

709231, 707161, 707202, 707206, G06F 1200, G06F 1516

Patent

active

061253936

ABSTRACT:
A multisystem log stream of a multisystem environment is compressed. The oldest record needed for each system that can write or delete entries from the multisystem log stream is tracked, and that information is used in compression of the log stream. The block ids associated with those oldest records are maintained within a vector, and when the vector is updated, a determination is made as to whether the entry in the vector that it replaced previously contained the lowest block id in the vector. If so, all the records having block ids lower than the new lowest block id in the vector are deleted.

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