On Fri, Aug 18, 2017 at 06:44:08PM +0000, Vallish Vaidyeshwara wrote: > There has been a behavior change in 4.9 kernel with refactoring of Kernel > timer wheel in 4.8. We have a use case wherein our datagram socket > application is sensitive to socket timeout including long timeouts. > > One of the test runs with a timeout value of 180 seconds timed out at > 190 seconds.
So the whole premise of the new timer wheel is that long timeouts need not be very accurate. > Patch 1: Has core code change of enabling hires timer to timeout datagram > socket on AF_UNIX and AF_INET domain Using hrtimers will hurt performance for most applications. Can you please explain your use case and why is it so important? Thanks, Richard