| Date | Tue, 9 Jan 2018 13:28:50 +0100 | From | Christoph Hellwig <> | Subject | Re: aio poll, io_pgetevents and a new in-kernel poll API |
| |
On Thu, Jan 04, 2018 at 09:00:12AM +0100, Christoph Hellwig wrote: > The changes were sponsored by Scylladb, and improve performance > of the seastar framework up to 10%, while also removing the need > for a privileged SCHED_FIFO epoll listener thread.
Due to the current events:
With KPTI enabled the aio poll code is almost 16% faster than epoll with the special SCHED_FIFO listener thread.
The Scylladb https example is still more than 4% faster with KPTI and aio poll vs non-KPTI with epoll.
|