On Wed, 12 Apr 2000, Andrea Arcangeli wrote:
> On Wed, 12 Apr 2000, Jeff V. Merkey wrote:
>
> >I have added calls to run_task_queue(&tq_disk) to the code, and it makes
> >the AIO performance go way up. I noticed that the current task is
^^^^^^^^^^^^^^^^^^^^^
> That's normal. Running run_task_queue(&tq_disk) when not
> necessary can _only_ harm performance since it doesn't allow the
> plugging code and the elevator to do their work.
Running it when it's not needed will indeed lower performance,
but not running it when it's needed will be a big loss. Maybe
we should do a run_task_queue(&tq_disk) whenever we're (almost)
running out of request slots?
Jeff saw a definate improvement in the performance of his system
when running tq_disk...
regards,
Rik
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