1. 02 4月, 2010 3 次提交
  2. 25 3月, 2010 2 次提交
    • D
      cfq-iosched: Do not merge queues of BE and IDLE classes · 39c01b21
      Divyesh Shah 提交于
      Even if they are found to be co-operating.
      
      The prio_trees do not have any IDLE cfqqs on them. cfq_close_cooperator()
      is called from cfq_select_queue() and cfq_completed_request(). The latter
      ensures that the close cooperator code does not get invoked if the current
      cfqq is of class IDLE but the former doesn't seem to have any such checks.
      So an IDLE cfqq may get merged with a BE cfqq from the same group which
      should be avoided.
      
      Signed-off-by: Divyesh Shah<dpshah@google.com>
      Acked-by: NVivek Goyal <vgoyal@redhat.com>
      Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
      39c01b21
    • D
      cfq-iosched: Add additional blktrace log messages in CFQ for easier debugging · b1ffe737
      Divyesh Shah 提交于
      These have helped us debug some issues we've noticed in earlier IO
      controller versions and should be useful now as well. The extra logging
      covers:
      - idling behavior. Since there are so many conditions based on which we decide
      to idle or not, this patch adds a log message for some conditions that we've
      found useful.
      - workload slices and current prio and workload type
      
      Changelog from v1:
      o moved log message from cfq_set_active_queue() to __cfq_set_active_queue()
      o changed queue_count to st->count
      
      Signed-off-by: Divyesh Shah<dpshah@google.com>
      Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
      b1ffe737
  3. 24 3月, 2010 1 次提交
  4. 19 3月, 2010 3 次提交
  5. 16 3月, 2010 2 次提交
  6. 15 3月, 2010 29 次提交