Uploaded image for project: 'Lustre'
  1. Lustre
  2. LU-15821

Server driven blocking callbacks can wait behind general lru_size management

    XMLWordPrintable

Details

    • 3
    • 9223372036854775807

    Description

      The current code places bl_ast lock callbacks at the end of the global BL callback queue.  This is bad because it causes urgent requests from the server to wait behind non-urgent cleanup tasks to keep lru_size at the right level.

      This can lead to evictions if there is a large queue of items in the global queue so the callback is not serviced in a timely manner.

      Put bl_ast callbacks on the priority queue so they do not wait behind the background traffic.

      Attachments

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-15915 /bin/rm: fts_read failed: Cannot send after transport endpoint shutdown

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-16285 Prolong the lock BL timeout

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. LU-15822 debug in lock_matches

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Open

          Activity

            People

              paf0186 Patrick Farrell
              paf0186 Patrick Farrell
              Votes:
              0 Vote for this issue
              Watchers:
              8 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: