[Bug 1533639] Re: [ubuntu-cpc] please make /tmp a tmpfs in RAM

[Ryan Harper]

Can we publish some test images?  Instead of guessing at this, we can
benchmark this.

In general swapping ram-based for what is almost always disk-based is
going to impact applications/deployments using tmp and expecting enough
space there.  It's not uncommon for large ISO or other image downloads
to reside in this location and this change would break smaller instances
which are memory constrained from doing these sorts of tasks without
changing where things are stored.

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https://bugs.launchpad.net/bugs/1533639

Title:
  [ubuntu-cpc] please make /tmp a tmpfs in RAM

Status in livecd-rootfs package in Ubuntu:
  Triaged

Bug description:
  In Ubuntu, we clear /tmp on every boot.

  As such, on servers, by default /tmp should actually be a tmpfs
  entirely in RAM.

  This has several advantages, mainly:
   * Performance - much faster read/write access to data in /tmp
   * Security - sensitive data would be cleared from memory on boot, rather than written (leaked) to disk -- important for encryption scenarios

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