How does 'storage2.max-concurrent-requests' really work?

Node Operators FAQ
33

Did the filewalker restart again? How to interpret that:

[3341639376970616775,4948462480863905764] storj.io/storj/storagenode/pieces.(*CacheService).Run() (elapsed: 39h48m9.101477867s, orphaned)
 [8290101857834522541,4948462480863905764] storj.io/storj/storagenode/pieces.(*Store).SpaceUsedTotalAndBySatellite() (elapsed: 39h48m9.101399658s)
  [233612088496725171,4948462480863905764] storj.io/storj/storagenode/pieces.(*Store).WalkSatellitePieces() (elapsed: 1h31m34.008860976s)
   [1470727708712701612,4948462480863905764] storj.io/storj/storage/filestore.(*Dir).WalkNamespace() (elapsed: 1h31m34.008843935s)
    [2707843328928678054,4948462480863905764] storj.io/storj/storage/filestore.(*Dir).walkNamespaceInPath() (elapsed: 1h31m34.00889831s)

Im surprised about the 2 different times showing:
39h48m and 1h31m. The second one seems to indicate that the filewalker started again about 1 and half hours ago.