Tony Galway wrote:
I had previously undertaken a benchmark that pits “out of box”
performance of UFS via SVM, VxFS and ZFS but was waylaid due to some
outstanding availability issues in ZFS. These have been taken care of,
and I am once again undertaking this challenge on behalf of my
customer. The idea behind this benchmark is to show
a. How ZFS might displace the current commercial volume and file
system management applications being used.
b. The learning curve of moving from current volume management
products to ZFS.
c. Performance differences across the different volume management
products.
VDBench is the test bed of choice as this has been accepted by the
customer as a telling and accurate indicator of performance. The last
time I attempted this test it had been suggested that VDBench is not
appropriate to testing ZFS, I cannot see that being a problem, VDBench
is a tool – if it highlights performance problems, then I would think
it is a very effective tool so that we might better be able to fix
those deficiencies.
First, VDBench is a Sun internal and partner only tool so you might not
get much response on this list.
Second, VDBench is great for testing raw block i/o devices. I think a
tool that does file system testing will get you better data.
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