[Bug 1533639] Re: [ubuntu-cpc] please make /tmp a tmpfs in RAM
Dustin Kirkland
dustin.kirkland at gmail.com
Thu Jan 14 10:30:09 UTC 2016
** Description changed:
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
+ * 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
+ * Power consumption - storing information in memory is more energy efficient than reading and writing to disk
** Description changed:
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
- * Power consumption - storing information in memory is more energy efficient than reading and writing to disk
+ * Power consumption - storing information in memory is more energy efficient than reading and writing to disk
+
+ In scenarios where more space in /tmp is needed than available, one can
+ compliment that tmpfs with 'sudo apt-get install swapspace' which will
+ dynamically create/delete swapfile as necessary.
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https://bugs.launchpad.net/bugs/1533639
Title:
[ubuntu-cpc] please make /tmp a tmpfs in RAM
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