On Tue, Aug 18, 2020 at 08:00:11PM +0530, Muni Sekhar wrote: > Hi all, > > I’ve two identical Linux systems with only kernel differences. What are the differences in the kernels? > While doing kernel profiling with perf, I got the below mentioned > metrics for Scheduler benchmarks. > > 1st system (older kernel version compared to the other system) benchmark result: > > $ perf bench sched messaging -g 64 > # Running 'sched/messaging' benchmark: > # 20 sender and receiver processes per group > # 64 groups == 2560 processes run > > Total time: 2.936 [sec] > > > 2nd system benchmark result: > > $ perf bench sched messaging -g 64 > # Running 'sched/messaging' benchmark: > # 20 sender and receiver processes per group > # 64 groups == 2560 processes run > > Total time: 10.074 [sec] > > > So as per scheduler benchmark results, clearly a huge difference > between two systems. > Can anyone suggest to me how to dive deeper to know the root cause for > it. Look a the differences between your different kernels, that would be a great start :) good luck! greg k-h _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
