Kernel PPS processing
Matthew.Selsky at twosigma.com
Wed Jun 29 18:55:23 UTC 2016
On Wed, Jun 29, 2016 at 11:48:08AM -0700, Hal Murray wrote:
> > Can you quantify the better? I would have expected identical...
> Did you look at the graph?
> I'm not sure why you would expect performance to be identical. Dave Mills
> and crew went to a lot of effort to get code into various kernels, including
> writing a RFC. I'd be very surprised if it wasn't a significant improvement.
> The question in my mind is have things changed enough since 1994 so that we
> can do as well without that code in the kernel?
We tested booting with "nohz=off intel_idle.max_cstate=0" and it made a difference in our production clocks.
I can try to get graphs if needed.
More information about the devel