On Thu, Aug 26, 2021 at 10:36:41AM +0200, Paul Menzel wrote: > Dear Linux folks, > > > In the internal statistics [1] the attempts to look up an inode in the inode > cache (`xs_ig_attempts`) is a little bigger (35) than the sum of found and > missed entries minus duplicates (`xfs.inode_ops.ig_dup`): 651067226 = > 651067191 + 35 > 651067191 = 259143798 + 391923706 - 313. In addition to the explanation about the counters from data: all error returns are also not counted, as well as the case where an XFS_IGET_INCORE lookup did not find the inode cached. The latter would make sense to be included in a missed counter, but it looks like the counter is more intended to count when an inode is actually read from disk.
