My test was to open the webbrowser with no tab open, open a tap, go to
lemonde.fr, navigate through the news and monitor the number of fd open
by the browser in /run/shm.

When the browser is launched it starts with 9, jumps to 30 on the first
open tab and increases to more than 100 as I was browsing the website.

Even if it is not a leak but some files that chromium keeps as a cache,
holding so many large files in /run/shm must have a severe impact on
memory.

For example I did another test and used the browser for for a longer time and 
the memory usage for oxide-renderer is (in pages):
USS: 154389    
PSS: 159730.36
RSS: 165679

With 96 files in /run/shm.

** Summary changed:

- oxide-renderer leaks fd in /run/shm
+ oxide-renderer heavily uses /run/shm

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https://bugs.launchpad.net/bugs/1497924

Title:
  oxide-renderer heavily uses /run/shm

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