Messages in this thread | | | Subject | Re: [RFC v0] Use swait in completion | From | Daniel Wagner <> | Date | Tue, 8 Mar 2016 19:07:16 +0100 |
| |
On 03/08/2016 06:52 PM, Sebastian Andrzej Siewior wrote: > However I don't think if your DEFER flag solution is all that bad. I > have also the block-mq in -RT using swait and they perform wakes with > irqs-off. Not in -RT but mainline. So me might need something to make it > work properly. But if we defer the wakeup they might come at us and > complain about the latency…
I intended to extend the test code to measure the latency diff as well. Just to get a feeling how bad it is. At least with a lot of waiters on the completion the current measurement indicate an improvement. I guess with real workload the things look quite different.
cheers, daniel
| |