diff options
| author | Vennila Megavannan <vennila.megavannan@intel.com> | 2016-02-09 14:29:49 -0800 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-03-10 20:38:07 -0500 |
| commit | bfee5e32e701b98634b380a9eef8b5820feb7488 (patch) | |
| tree | 2d88caba4531edaee754643fdb943450765f0ca8 /include/rdma/rdmavt_qp.h | |
| parent | 773d0451685b96f157ccd617a5e9cd9d3fa7d986 (diff) | |
IB/rdmavt, staging/rdma/hfi1: use qps to dynamically scale timeout value
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>
Diffstat (limited to 'include/rdma/rdmavt_qp.h')
| -rw-r--r-- | include/rdma/rdmavt_qp.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/rdma/rdmavt_qp.h b/include/rdma/rdmavt_qp.h index aed13e13591c..b3ea74579316 100644 --- a/include/rdma/rdmavt_qp.h +++ b/include/rdma/rdmavt_qp.h @@ -225,6 +225,8 @@ struct rvt_ack_entry { }; }; +#define RC_QP_SCALING_INTERVAL 5 + /* * Variables prefixed with s_ are for the requester (sender). * Variables prefixed with r_ are for the responder (receiver). |