On Fri, Aug 18, 2023 at 11:12 AM Christian Göttsche <cgzones@xxxxxxxxxxxxxx> wrote: > > The number of buckets is calculated by performing a binary AND against > the mask of the hash table, which is one less than its size (which is a > power of two). This leads to all top bits being discarded, e.g. with > the Reference Policy on Debian there exists 376 entries, leading to a > size of 512, discarding the top 23 bits. > > Use jhash to improve the hash table utilization: > > # current > roletr: 376 entries and 124/512 buckets used, longest chain length 8, sum of chain length^2 1496 > > # patch > roletr: 376 entries and 266/512 buckets used, longest chain length 4, sum of chain length^2 646 > > Signed-off-by: Christian Göttsche <cgzones@xxxxxxxxxxxxxx> Reviewed-by: Stephen Smalley <stephen.smalley.work@xxxxxxxxx>
