Add back the Ubuntu "Memory and Swap Accounting" section that was lost when the "Kernel" page was culled

[tianon]

Fixes #4250

[SvenDowideit]

@tianon is this ubuntu specific? or should we really create a new .rst and then include it into all the linux's

@metalivedev @jamtur01

[tianon]

Well, it applies to Debian and Mint, too.

Only the swapaccout part might apply to other distros, and that depends entirely on how their kernel is compiled. For example, I compile my own kernels and I just have these turned on by default in my config.

[skull-squadron]

👍 🍰

[metalivedev]

LGTM. If this should be in more Linuxes then we can refactor it as people complain "hey, how come this tip is only in Ubuntu?" but in the meantime I'd rather add to the collective wisdom where we can.

[tianon]

Just for the record, here's the original: http://docs.docker.io/en/v0.6.3/installation/kernel/#memory-and-swap-accounting-on-debian-ubuntu

"Memory and Swap Accounting on Debian/Ubuntu"

And just to be extra clear, only swapaccount=1 might be useful for other distros (cgroup_enable=memory is specifically for some badly-written Debian/Ubuntu sysvinit scripts...), and it all depends on how their kernels are compiled, so would warrant explicit testing per-distro.

[skull-squadron]

It’s a startup. Can’t build Rome in a day. ;)

On Feb 20, 2014, at 6:05 PM, Andy Rothfusz notifications@github.com wrote:

LGTM. If this should be in more Linuxes then we can refactor it as people complain "hey, how come this tip is only in Ubuntu?" but in the meantime I'd rather add to the collective wisdom where we can.

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[tianon]

Ok, I'm going to have to eat some of my words here. cgroup_enable=memory is definitely needed for at least Debian-based kernels. I don't know if it's needed for any non-Debian-based kernels, however.