On Thu, Jul 16, 2015 at 08:48:41AM -0600, Jens Axboe wrote: > I've played with this before, but always ran into the hurdle of making > part_in_flight() too expensive ended up hurting results in the end. Making > the inc/dec parts of accounting percpu is a no-brainer, unfortunately the > summing then becomes pretty expensive. I'll run this through some testing > and see what kind of results I get.
The only place which could be a problem is part_round_stats() and we can do that *way* lazier. I don't think we're using that internally. Why are we even invoking it from IO issue / completion path? Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
