Ralf Hildebrandt <Ralf.Hildebrandt <at> charite.de> writes:
* Casper Bang <casper.bang <at> gmail.com>:
quoted
Oracle (Unbreakable) Linux x64 2.6.39-200.29.3.el6uek.x86_64 #1 SMP
And the btrfs was that from vanilla 2.6.39 (i.e. over a year old)?
We're using the latest available kernel for our Oracle Unbreakable
Linux 6.3 from Aug 28. We have no other option, since the Oracle database
software needs to run on a certified distro. I have no idea how to check
the version Oracle actually compiles with, only the tools package has
easy-to-grasp version info.
In any event, I would think it unlikely that the performance differences
we see is the result of missing performance tweeks - we're talking an order
of magnitude here and that smells of a design difference.