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5176 lock contention on godfather zio Reviewed by: Adam Leventhal <ahl@delphix.com> Reviewed by: Alex Reece <alex.reece@delphix.com> Reviewed by: Christopher Siden <christopher.siden@delphix.com> Reviewed by: George Wilson <george.wilson@delphix.com> Reviewed by: Richard Elling <richard.elling@gmail.com> Reviewed by: Bayard Bell <Bayard.Bell@nexenta.com> Approved by: Garrett D'Amore <garrett@damore.org> References: https://www.illumos.org/issues/5176 https://github.com/illumos/illumos-gate/commit/6f834bc Porting notes: Under Linux max_ncpus is defined as num_possible_cpus(). This is largest number of cpu ids which might be available during the life time of the system boot. This value can be larger than the number of present cpus if CONFIG_HOTPLUG_CPU is defined. Ported by: Turbo Fredriksson <turbo@bayour.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #2711 |
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