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Decrease vfs_cache_pressure on mm backend systems

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To decrease the crawl duration on the mirrors we have been
recommending to lower the default value of vfs_cache_pressure
from 100 to 10. This causes the kernel to prefer to keep dentries
when under memory pressure. Let's also set it on the mm backend
systems as umdl is mainly looking at the metadata.
This commit is contained in:
Adrian Reber 2015-06-18 13:37:31 +00:00
parent 3b14a1e07f
commit 9668ebed9f
1 changed files with 7 additions and 0 deletions
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7
roles/mirrormanager/backend/tasks/main.yml
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@ -63,3 +63,10 @@
tags:
- config
when: env != 'staging'
# To decrease the crawl duration on the mirrors we have been
# recommending to lower the default value of vfs_cache_pressure
# from 100 to 10. This causes the kernel to prefer to keep dentries
# when under memory pressure. Let's also set it on the mm backend
# systems as umdl is also mainly looking at the metadata.
- sysctl: name=vm.vfs_cache_pressure value=10 state=present sysctl_set=yes reload=yes