973934b965
When testing distributed rebuild performance with more capable hardware it was observed than increasing the zfs_rebuild_vdev_limit to 64M reduced the rebuild time by 17%. Beyond 64MB there was some improvement (~2%) but it was not significant when weighed against the increased memory usage. Memory usage is capped at 1/4 of arc_c_max. Additionally, vr_bytes_inflight_max has been moved so it's updated per-metaslab to allow the size to be adjust while a rebuild is running. Reviewed-by: Akash B <akash-b@hpe.com> Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #14428 |
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