[Bugs] [Bug 1273348] [Tier]: lookup from client takes too long {~7m for 18k files}

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1273348



--- Comment #7 from Dan Lambright <dlambrig at redhat.com> ---
One question, the bug shows when tiering is disabled the time is 3.11 minutes.
When tiering is enabled time is 7.41 minutes. I would like to know if the jump
in time is due to demoting data between the nodes. 

Can you repeat the test and, at the same time the "find . | xargs stat" is
running, in another window issue "gluster vol tier <volname> status". Check if
the counters are increasing at the same time the find command runs.

Wait until all data moves to the cold tier and repeat the test. Monitor
counters to be sure they are not increasing and the system is stable. Are the
times different or just as bad?

I have seen moderate performance degredation while demotion is happening on a 2
node system , hot tier 6x2 and cold tier 6x2.

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