Hello folks.
We're having some troubles with kvm guest performance, and we would somebody could help us.
Actually we are testing KVM running on Ubuntu 16.04 LTS, with Windows guest and MSSQL installed.
The point is, this guest can't even reach 50% of the Vmware guest performance (the configurations are the same, same host, memory, disk, ...)
We're using LVM for storage for guest
For the performance tests we're using HammerDB.
Here are my host configuration (is only for testing proposes):
Dell Poweredge 1950
Disk: 2 x 500GB Sata
Processor: 2 x Intel E5410
Memory: 32GB
Guest configuration
Processor: 8 (host-passthrough)
Memory: 30GB (it was not installed ballon driver)
Disk: 100GB (storaged on LVM volume and with Virtio blk driver)
Network: Installed with Virtio net driver
The performance results are here: https://docs.google.com/spreadsheets...it?usp=sharing
When I run a simple sequential disk read/write test, the results are beautiful, KVM demonstrates better than VMware
KVM Guest
Sequential write: 110MB/s
Sequential read: 132MB/s
VMware Guest
Sequential write: 100MB/s
Sequential read: 116MB/s
There is something that we are missing?
Could you please give us some light?
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