Hi Amit, I should have included the numbers in the cover letter. Here are numbers for TC2.
sysbench (normalized execution time, lower is better) threads 2 4 8 HMP 1.00 1.00 1.00 HMP+GB 1.00 0.67 0.58 coremark (normalized iterations per second, higher is better) threads 2 4 8 HMP 1.00 1.00 1.00 HMP+GB 1.00 1.39 1.73 So there is clear benefit of utilizing the A7s. It actually saves energy too as the whole benchmark completes faster. Regards, Morten On Fri, Dec 7, 2012 at 12:14 PM, Amit Kucheria <amit.kuche...@linaro.org> wrote: > > On Fri, Dec 7, 2012 at 5:33 PM, Morten Rasmussen > <morten.rasmus...@arm.com> wrote: > > Hi Viresh, > > > > Here is a patch that introduces global load balancing on top of the > > existing HMP > > patch set. It depends on the HMP patches already present in your > > task-placement-v2 > > branch. It can be applied on top of the HMP sysfs patches if needed. The > > fix should > > be trivial. > > > > Could you include in the MP branch for the 12.12 release? Testing with > > sysbench and > > coremark show significant performance improvements for parallel workloads > > as all > > cpus can now be used for cpu intensive tasks. > > Morten, > > Can you share some performance number improvements and/or > kernelshark-type graphs with and without this patch? It'd be very > interesting to see the changes. > > Monday is the deadline to get this merged into the MP tree to make it > to the release. It is end of week now. Not sure how much testing and > review can be done before Monday. Your numbers might make a compelling > argument. > > Regards, > Amit > > > Thanks, > > Morten > > > > Morten Rasmussen (1): > > sched: Basic global balancing support for HMP > > > > kernel/sched/fair.c | 101 > > +++++++++++++++++++++++++++++++++++++++++++++++++-- > > 1 file changed, 97 insertions(+), 4 deletions(-) > > > > -- > > 1.7.9.5 > > > > > > > > _______________________________________________ > > linaro-dev mailing list > > linaro-dev@lists.linaro.org > > http://lists.linaro.org/mailman/listinfo/linaro-dev > > _______________________________________________ > linaro-dev mailing list > linaro-dev@lists.linaro.org > http://lists.linaro.org/mailman/listinfo/linaro-dev _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
