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Fix table style in ZIO Scheduler (#42)

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fix #39
This commit is contained in:
George Melikov
2020-07-29 23:01:01 +03:00
committed by GitHub
parent 4257a8a364
commit 76a1733a63
1 changed files with 13 additions and 18 deletions
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31
docs/Performance and Tuning/ZIO Scheduler.rst
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@@ -30,24 +30,19 @@ the per-queue maximums exceeds the aggregate maximum, then the number of
active I/Os may reach zfs_vdev_max_active, in which case no further I/Os
are issued regardless of whether all per-queue minimums have been met.
+-------------+--------------------------+--------------------------+
| I/O Class | Min Active Parameter | Max Active Parameter |
+=============+==========================+==========================+
| sync read | zfs_v | zfs_v |
| | dev_sync_read_min_active | dev_sync_read_max_active |
+-------------+--------------------------+--------------------------+
| sync write | zfs_vd | zfs_vd |
| | ev_sync_write_min_active | ev_sync_write_max_active |
+-------------+--------------------------+--------------------------+
| async read | zfs_vd | zfs_vd |
| | ev_async_read_min_active | ev_async_read_max_active |
+-------------+--------------------------+--------------------------+
| async write | zfs_vde | zfs_vde |
| | v_async_write_min_active | v_async_write_max_active |
+-------------+--------------------------+--------------------------+
| scrub read | z | z |
| | fs_vdev_scrub_min_active | fs_vdev_scrub_max_active |
+-------------+--------------------------+--------------------------+
+-------------+------------------------------------+------------------------------------+
| I/O Class | Min Active Parameter | Max Active Parameter |
+=============+====================================+====================================+
| sync read | ``zfs_vdev_sync_read_min_active`` | ``zfs_vdev_sync_read_max_active`` |
+-------------+------------------------------------+------------------------------------+
| sync write | ``zfs_vdev_sync_write_min_active`` | ``zfs_vdev_sync_write_max_active`` |
+-------------+------------------------------------+------------------------------------+
| async read | ``zfs_vdev_async_read_min_active`` | ``zfs_vdev_async_read_max_active`` |
+-------------+------------------------------------+------------------------------------+
| async write | ``zfs_vdev_async_write_min_active``| ``zfs_vdev_async_write_max_active``|
+-------------+------------------------------------+------------------------------------+
| scrub read | ``zfs_vdev_scrub_min_active`` | ``zfs_vdev_scrub_max_active`` |
+-------------+------------------------------------+------------------------------------+
For many physical devices, throughput increases with the number of
concurrent operations, but latency typically suffers. Further, physical