On Wed, Jan 10, 2018 at 6:34 PM, Larry Stotler <larrystotler@gmail.com> wrote:
Or, it could be that the fix doesn't slow down the older chips as much and they may not have more value since the newest chips are getting the slowdown.
From Phoronix( https://www.phoronix.com/scan.php?page=article&item=linux-more-x86pti&num=1) :
- On that old Clarksfield-era ThinkPad I wasn't going to be surprised if the performance was disastrous, but it wound up being better than I had anticipated given all the ongoing drama... In general purpose workloads there was no reportable performance difference in our frequent benchmark test cases. Under I/O, the PTI-using kernel did yield some slower results but not by the margins seen on the newer systems with faster storage. The laptop consumer-grade HDD in this laptop appeared to be the main bottleneck and kernel inefficiencies weren't causing as dramatic slowdowns. - To some surprise, when carrying out network benchmarks with netperf/iperf3, in at least those contexts PTI didn't have a noticeable impact on the network throughput performance. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org