lkml.org 
[lkml]   [2018]   [Jan]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: 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.

    \
     
     \ /
      Last update: 2018-01-14 23:19    [W:8.831 / U:0.008 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site