[lkml]   [2009]   [Mar]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [patch 12/14] fs: dcache per-bucket dcache hash locking
    Date writes:

    > We can turn the dcache hash locking from a global dcache_hash_lock into
    > per-bucket locking.

    Per bucket locking is typically a bad idea because you get far too
    many locks and you increase cache footprint with all of them. It's
    typically better to use a second much smaller hash table that only has
    locks (by just shifting the hash value down some more)
    Just need to be careful to avoid too much false sharing.


    -- -- Speaking for myself only.

     \ /
      Last update: 2009-03-30 14:17    [W:0.020 / U:4.068 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site