IB/hfi1: Adjust default eager_buffer_size to 8MB
Performance analysis shows benefits for PSM2 in increasing eager buffer size from 2MB to 8MB. The change has neutral impact on verbs. Make change to the module parameter's default value. Allocation ring down was verified to work with the larger buffer size. Reviewed-by: NTadeusz Struk <tadeusz.struk@intel.com> Reviewed-by: NMike Marciniszyn <mike.marciniszyn@intel.com> Reviewed-by: NDennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: NTymoteusz Kielan <tymoteusz.kielan@intel.com> Signed-off-by: NDennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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