Distributed read and write caching implementation for optimized input/output applications
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United States of America Patent
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Jan 20, 2004
Grant Date -
Feb 27, 2003
app pub date -
Aug 27, 2001
filing date -
Aug 27, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A caching input/output hub includes a host interface to connect with a host. At least one input/output interface is provided to connect with an input/output device. A write cache manages memory writes initiated by the input/output device. At least one read cache, separate from the write cache, provides a low-latency copy of data that is most likely to be used. The at least one read cache is in communication with the write cache. A cache directory is also provided to track cache lines in the write cache and the at least one read cache. The cache directory is in communication with the write cache and the at least one read cache.
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