On Wed, Jun 29, 2016 at 12:31:32PM -0700, Hal Murray wrote: > matthew.sel...@twosigma.com said: > > We tested booting with "nohz=off intel_idle.max_cstate=0" and it made a > > difference in our production clocks. > > Interesting. Thanks. > > How did you decide to go there?
The "nohz=off" hint is mentioned in several PTP guides. "intel_idle.max_cstate=0" is mentioned in low-latency tuning guides and we decided to try it. > Did you try those 2 changes separately? Was that with PPS or just a typical > system? Yes, I reported on the results in the other reply in this thread. I have GPS PCIe card that I'm reading via the SHM driver. > Are you using the kernel from a distro or building your own? Rolling my own kernel. Cheers, -Matt _______________________________________________ devel mailing list devel@ntpsec.org http://lists.ntpsec.org/mailman/listinfo/devel
