IB/rdmavt, staging/rdma/hfi1: use qps to dynamically scale timeout value

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A busy_jiffies variable is maintained and updated when rc qps are
created and deleted. busy_jiffies is a scaled value of the number
of rc qps in the device. busy_jiffies is incremented every rc qp
scaling interval. busy_jiffies is added to the rc timeout
in add_retry_timer and mod_retry_timer. The rc qp scaling interval
is selected based on extensive performance evaluation of targeted
workloads.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Vennila Megavannan <vennila.megavannan@intel.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

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Vennila Megavannan 2016-02-09 14:29:49 -08:00 • committed by Doug Ledford

parent 773d045168

commit bfee5e32e7

4 changed files with 32 additions and 3 deletions

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4

include/rdma/rdma_vt.h

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2

include/rdma/rdmavt_qp.h

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