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Here's couple of patches to improve the softlockup watchdog. The first changes the softlockup timer from using jiffies to sched_clock() as a timebase. Xen and VMI implement sched_clock() as counting unstolen time, so time stolen by the hypervisor won't cause the watchdog to bite. The second adds per-cpu enable flags for the watchdog timer. This allows the timer to be disabled when the

Here's couple of patches to improve the softlockup watchdog. The first changes the softlockup timer from using jiffies to sched_clock() as a timebase. Xen and VMI implement sched_clock() as counting unstolen time, so time stolen by the hypervisor won't cause the watchdog to bite. The second adds per-cpu enable flags for the watchdog timer. This allows the timer to be disabled when the

Hi there, I am getting very low throughput (around 0.29Mbps) while running netperf benchmark for guest to guest communication on a single physical host. To analyse where the time is spent in hypervisor I wanna use profiling. Please help me choosing good profiler according to my requirments. Should it be better in my case, Xentrace, gprof, xenoprof  or Oprofile. Is it possible to use some vtune

Hi there, I am getting very low throughput (around 0.29Mbps) while running netperf benchmark for guest to guest communication on a single physical host. To analyse where the time is spent in hypervisor I wanna use profiling. Please help me choosing good profiler according to my requirments. Should it be better in my case, Xentrace, gprof, xenoprof  or Oprofile. Is it possible to use some vtune

Hi Ingo, This series of patches implements a number of improvements to the softlockup watchdog and its users. They are: 1. Make the watchdog ignore stolen time When running under a hypervisor, the kernel may lose an arbitrary amount of time as "stolen time". This may cause the softlockup watchdog to trigger spruiously. Xen and VMI implement sched_clock() as measuring unstolen time,

Hi Ingo, This series of patches implements a number of improvements to the softlockup watchdog and its users. They are: 1. Make the watchdog ignore stolen time When running under a hypervisor, the kernel may lose an arbitrary amount of time as "stolen time". This may cause the softlockup watchdog to trigger spruiously. Xen and VMI implement sched_clock() as measuring unstolen time,

...ted, but are included to make the series self-contained.) I've tried to make each patch as self-explanatory as possible. The series is based on 2.6.21-rc3-git7. Changes since the previous posting: - SMP support - Implemented xen_clockevent, so Xen is fully compatible with CONFIG_NO_HZ and HIGH_RES_TIMERS. - Finished implementing late pinning/early unpinning of pagetables, which should now be equivalent to xen-unstable in performance. - Add kmap_atomic_pte for mapping ptes, and therefore support for HIGHPTE - Fixed crash on systems with >= 4G memory - Cleanup netfront (Stephen Hemminger) - Add...

...ted, but are included to make the series self-contained.) I've tried to make each patch as self-explanatory as possible. The series is based on 2.6.21-rc3-git7. Changes since the previous posting: - SMP support - Implemented xen_clockevent, so Xen is fully compatible with CONFIG_NO_HZ and HIGH_RES_TIMERS. - Finished implementing late pinning/early unpinning of pagetables, which should now be equivalent to xen-unstable in performance. - Add kmap_atomic_pte for mapping ptes, and therefore support for HIGHPTE - Fixed crash on systems with >= 4G memory - Cleanup netfront (Stephen Hemminger) - Add...

...ted, but are included to make the series self-contained.) I've tried to make each patch as self-explanatory as possible. The series is based on 2.6.21-rc3-git7. Changes since the previous posting: - SMP support - Implemented xen_clockevent, so Xen is fully compatible with CONFIG_NO_HZ and HIGH_RES_TIMERS. - Finished implementing late pinning/early unpinning of pagetables, which should now be equivalent to xen-unstable in performance. - Add kmap_atomic_pte for mapping ptes, and therefore support for HIGHPTE - Fixed crash on systems with >= 4G memory - Cleanup netfront (Stephen Hemminger) - Add...