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backup: update information about performance settings

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Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
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Fiona Ebner 2024-04-16 14:09:56 +02:00 committed by Thomas Lamprecht
parent d5b75187db
commit 848c7b1be5
1 changed files with 5 additions and 4 deletions
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vzdump.adoc
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@ -214,10 +214,11 @@ the behaviour for catching up. By enabling the `Repeat missed` option
(`repeat-missed` in the config), you can tell the scheduler that it should run (`repeat-missed` in the config), you can tell the scheduler that it should run
missed jobs as soon as possible. missed jobs as soon as possible.
There are a few settings for tuning backup performance not exposed in the UI. There are a few settings for tuning backup performance (some of which are
The most notable is `bwlimit` for limiting IO bandwidth. The amount of threads exposed in the 'Advanced' tab in the UI). The most notable is `bwlimit` for
used for the compressor can be controlled with the `pigz` (replacing `gzip`), limiting IO bandwidth. The amount of threads used for the compressor can be
respectively, `zstd` setting. Furthermore, there are `ionice` and, as part of controlled with the `pigz` (replacing `gzip`), respectively, `zstd` setting.
Furthermore, there are `ionice` (when the BFQ scheduler is used) and, as part of
the `performance` setting, `max-workers` (affects VM backups only) and the `performance` setting, `max-workers` (affects VM backups only) and
`pbs-entries-max` (affects container backups only). See the `pbs-entries-max` (affects container backups only). See the
xref:vzdump_configuration[configuration options] for details. xref:vzdump_configuration[configuration options] for details.