Add var to limit restic CPU usage

See https://restic.readthedocs.io/en/stable/047_tuning_backup_parameters.html#cpu-usage
Mikroways · Mar 14, 2024 · eba728b · eba728b
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diff --git a/README.md b/README.md
@@ -77,6 +77,7 @@ This scripts will be stored in a configurable scripts directory:
 | `restic_failure_mail_to` | `root` ||
 | `restic_non_root_setup` | `false` | Installs Restic as a specific user with read-only rights. (See [restic docs](https://restic.readthedocs.io/en/stable/080_examples.html#backing-up-your-system-without-running-restic-as-root))|
 | `restic_non_root_setup_user` | `restic` ||
+| `restic_gomaxprocs` | not defined | By default, restic [uses all available CPU cores](https://restic.readthedocs.io/en/stable/047_tuning_backup_parameters.html#cpu-usage). Use this variable to limit the number of used CPU cores.   |
 
 ### Repos
 

diff --git a/templates/restic_access.j2 b/templates/restic_access.j2
@@ -22,6 +22,9 @@ export B2_ACCOUNT_ID='{{ restic_repos[item.repo].b2_account_id }}'
 {% if restic_repos[item.repo].b2_account_key is defined %}
 export B2_ACCOUNT_KEY='{{ restic_repos[item.repo].b2_account_key }}'
 {% endif %}
+{% if restic_gomaxprocs is defined %}
+export GOMAXPROCS={{ restic_gomaxprocs }}
+{% endif %}
 BACKUP_NAME='{{ item.name }}'
 {% if item.src is defined %}
 BACKUP_SOURCE='{{ item.src }}'