Christian Balzer wrote:
> I'm trying to understand that distribution, and the best explanation
> I've come up with is that these are ext4/xfs metadata updates,
> probably atime updates. Based on that theory, I'm going to test
> noatime on a few VMs and see if I notice a change in the distribution.
>
That strikes me as odd, as since kernel2.6.30 the default option for mounts is
relatime, which should have an effect quite close to that of a strict noatime.
That's a good point, which I hadn't realized. I confirmed that relatime
is used by default on our RHEL6 client VMs, so it probably isn't the
file accesses leading to many small writes. Any other theories?
Cheers, Dan
-- Dan van der Ster || Data & Storage Services || CERN IT Department --
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