On 03/31/16 13:32, Humberto Ramirez wrote:
Is anybody familiar with any recent perfomance comparison of KVM vs
VMWare ESX? Or perhaps someone who had been running ESX and migrated
to SmartOS on the same hardware?
I found an old a paper from 2012 on which ESX outperformed KVM by 30%
and sometimes for as much as 45%, of course 4 years is an eternity and
that KVM system was not running SmartOS nor ZFS.
I haven't compared like for like for a while, but of all the systems
I've moved from VmWare to SmartOS KVM, there has been a performance
gain, especially I/O.
The KVM overhead for Ubuntu tested by building gcc compared to bare
metal is about 8-9%. For windows I've seen SmartOS KVM return better
than bare metal numbers (ZFS?) running MS-SQL benchmarks.
On like for like hardware, I can't see how VmWare+NAS can best KVM+ZFS.
You should try a comparison with your expected workload.
--
Ian.
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