[Swift-devel] bg/p /dev/shm slow filesystem acccess?

[Ben Clifford]

When we looked at wrapper log plots last week when I was at the CI, there 
were some very simple steps (such as making a directory on the worker node 
in-memory filesystem) that were being logged as taking a long time.

This is something that I think is worth investigating. I can imagine at 
least two possible causes:

i) one is that logging is taking a very long time in comparison to such 
operations.

ii) another is that the /dev/shm filesystems actually are being slow.

Both of those situations seem to be a cause for further 
investigation/concern/characterisation.

--