vm.swappiness ?

Matthew Von-Maszewski matthewv at basho.com
Wed Oct 16 16:31:26 EDT 2013


recommend value for Riak is zero.

On Oct 16, 2013, at 4:28 PM, Alex Rice <alex at mindlube.com> wrote:

> Just an informal poll- what is preferred for Linux vm.swappiness
> setting for Riak in a *cloud* environment? The default is 60 - a lot
> of stuff gets swapped out. This is good for OS disk cache.
> 
> I am thinking vm.swappiness = 0
> 
> - Avoid slow & potentially costly I/O operations in the virtualized environment
> - Make it easier to see if bitcask is running low of memory, as soon
> as the Swap partition has been touched at all (1st out of memory
> condition)
> - Disk cache wont be as effective.
> - I just like seeing Swap: 0% when I log in :0
> 
> Does this setting even matter at all, practically speaking?
> 
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