Adjustment of buffer credits and other parameters in a startup phase of communications between a plurality of channels and a control unit
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United States of America Patent
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Aug 28, 2018
Grant Date -
Nov 24, 2016
app pub date -
May 20, 2015
filing date -
May 20, 2015
priority date (Note) -
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Abstract
A control unit provides a number of buffer credits, to one or more channels, in response to an initiation of a startup phase of communication between the one or more channels and the control unit, where the provided number of buffer credits when used for transferring data causes transfer ready operations but no retry operations. The control unit iteratively increases the number of buffer credits by an amount that is high enough to eliminate any transfer ready operations or cause retry operations to occur within a predetermined amount of time from the initiation of the startup phase.
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