anchor.diff:                            {desc, <<"High water mark for auto-evictions (measured from ep_mem_high_wat)">>}]},
                   {struct, [{title, <<"low water mark">>},
                             {name, <<"ep_mem_low_wat">>},
  -                          {desc, <<"Low water mark for auto-evictions (measured from ep_mem_low_wat)">>}]}
  +                          {desc, <<"Low water mark for auto-evictions (measured from ep_mem_low_wat)">>}]},
  +                {struct, [{title, <<"write seek distance">>},
  +                          {name, <<"avg_write_seek_distance">>},
  +                          {desc, <<"Average write seek distance in bytes as measured from writeSeek histogram of kvtimings">>}]}
                ]}]},
        {struct,[{blockName,<<"vBucket Resources">>},
                 {extraCSSClasses,<<"withtotal closed">>},
  
positive.code:                         ResidenceCalculator),
      PendingResRate = Z2(vb_pending_num_non_resident, vb_pending_curr_items,
                          ResidenceCalculator),
      [{hit_ratio, HitRatio},
       {ep_cache_miss_rate, EPCacheMissRatio},
       {ep_resident_items_rate, ResidentItemsRatio},
  
negative.code:      {vb_avg_total_queue_age, AvgTotalQueueAge},
       {vb_active_resident_items_ratio, ActiveResRate},
       {vb_replica_resident_items_ratio, ReplicaResRate},
       {vb_pending_resident_items_ratio, PendingResRate},
       {avg_write_seek_distance, AverageWriteSeekDistance}].
  
  %% converts list of samples to proplist of stat values.
  %%
  