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

[Robie Basak]

> The big disadvantage of a tmpfs /tmp is that it cannot be paged out

My mistake, this is untrue if you have swap enabled (and enough swap
available). I was thinking of ramfs. I still wonder what any performance
gain would be, though. Using tmpfs will still limit size to available
RAM + available swap space.

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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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