swappiness

[nessus]

When I boot a live disk created with Remastersys from an Oneiric/Mate system that has no swap partition and therefore uses space on / for swap if and when swap is used at all, I notice the swappiness value remains at the Ubuntu Oneiric default value of 60.  It works fine, but I was wondering if it wouldn't make sense to set this to 0 since any swapping done is to the virtual filesystem anyway so swapping can't reduce RAM usage. Or is swap somehow disabled on the live disk so that the swappiness value is only relevant to hard drive installations made from the live disk?

This isn't a make or break issue - as much a matter of curiosity as anything - so I'm not sure if "help" is the right forum. If there is a more appropriate place to post this query, please let me know and I'll try to correct it. Thanks to all for reading this, and many thanks to Fragadelic for creating and maintaining Remastersys.

[fragadelic]

This more a function of how your system is setup.  Remastersys makes no changes to your installed system other than adding casper adn ubiquity which are required for the live to work and be installable.  Casper does all setup of the live system including mounting swap partitions if found.

I have always been of the school of thought that remastersys should not make major changes to the system and leaves that up to you instead.  There are arguments for both sides of this issue and I don't think an app to backup your system should really dictate how you use your system.

You can set these things in /etc/sysctl.conf and for more info on it you can see this page - http://unixfoo.blogspot.ca/2007/11/linux-performance-tuning.html

[nessus]

Thanks. I guess it mainly depends on whether you want to optimize the function as a backup for a bootable partition or as a live disk.