• Linus Torvalds's avatar
    Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 79071638
    Linus Torvalds authored
    Pull scheduler changes from Ingo Molnar:
     "The biggest change is a performance improvement on SMP systems:
    
      | 4 socket 40 core + SMT Westmere box, single 30 sec tbench
      | runs, higher is better:
      |
      | clients     1       2       4        8       16       32       64      128
      |..........................................................................
      | pre        30      41     118      645     3769     6214    12233    14312
      | post      299     603    1211     2418     4697     6847    11606    14557
      |
      | A nice increase in performance.
    
      which speedup is particularly noticeable on heavily interacting
      few-tasks workloads, so the changes should help desktop-style Xorg
      workloads and interactivity as well, on multi-core CPUs.
    
      There are also cpuset suspend behavior fixes/restructuring and various
      smaller tweaks."
    
    * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
      sched: Fix race in task_group()
      sched: Improve balance_cpu() to consider other cpus in its group as target of (pinned) task
      sched: Reset loop counters if all tasks are pinned and we need to redo load balance
      sched: Reorder 'struct lb_env' members to reduce its size
      sched: Improve scalability via 'CPU buddies', which withstand random perturbations
      cpusets: Remove/update outdated comments
      cpusets, hotplug: Restructure functions that are invoked during hotplug
      cpusets, hotplug: Implement cpuset tree traversal in a helper function
      CPU hotplug, cpusets, suspend: Don't modify cpusets during suspend/resume
      sched/x86: Remove broken power estimation
    79071638
init_task.h 5.95 KB