[MCOL-541] Amazon AMI set vm.swappiness = 0 as default for MariaDB-ColumnStore-1.0.7 image Created: 2017-02-02 Updated: 2017-12-01 Resolved: 2017-02-02 |
|
| Status: | Closed |
| Project: | MariaDB ColumnStore |
| Component/s: | Documentation |
| Affects Version/s: | 1.0.7 |
| Fix Version/s: | 1.0.7 |
| Type: | New Feature | Priority: | Minor |
| Reporter: | Richard Stracke | Assignee: | David Hill (Inactive) |
| Resolution: | Won't Fix | Votes: | 0 |
| Labels: | None | ||
| Environment: |
Amazon Community AMI MariaDB-ColumnStore-1.0.7 |
||
| Description |
|
Default value for Cent OS 7 is mariadb configuring-swappiness User awaits a ready to use preinstalled image. Request: |
| Comments |
| Comment by Andrew Hutchings (Inactive) [ 2017-02-02 ] |
|
30 is actually quite low already considering the kernel recommended default of 60. A swappiness of 0 could cause premature kernel OOM triggers with ColumnStore. If we were going down that route then it would likely be set to 1. Setting it to 0 for any modern Linux distribution should be done with extreme caution. |
| Comment by David Hill (Inactive) [ 2017-02-02 ] |
|
This setting is a default setting that is currently at 30. It can be dangerous to set it to low, so the setting will remain 30 as the default. I have updated the document to explain. So if the customer wants change this setting, then they can do that. |