We're experiencing extremely poor performance running on a Windows Virtual Machine under XenServer and VMWare.
Server FPS with 50 Players under Virtual Windows with 8 vCPUs and full CPU priority = Average 18fps
Server FPS with 50 Players under standard/dedicated Windows on the same server hardware = Average 35fps
CPU: Intel Xeon E3-1245v2 at 4.0 GHz
For reference; we do not face this issue in ARMA 2.
I'm able to provide multiple E3-1245v2 servers for testing/development purposes if required.
Did you tried the latest performance files https://www.dropbox.com/sh/582opsto4mmr8d8/AABSuQ8Jt5VlovUX86pi5iFRa ?
My Server is running in a VMWare Cluster with the same issue.
Here a screenshot of an old version 1.34 with v4 performance files https://onedrive.live.com/redir?resid=9C0579FA63F809BA!19574&authkey=!AAVuRCTI5BS4zrc&v=3&ithint=photo%2cpng (This server only runes 1 arma3 server)
Intel Xeon E3-1245v2 at 4.0 GHz ( Virtual Windows with 8 vCPUs and full CPU priority )
Preliminary test results 1.36 vperf1:
Server Uptime @ 5 mins = 40 Players = 45 fps
Server Uptime @ 10 mins = 46 Players = 45 fps
Server Uptime @ 15 mins = 48 Players = 38 fps @ 75% CPU Usage.
Server Uptime @ 45 mins = 60 Players = 18-21 fps @ 70% CPU Usage.
This is the vCPU usage reported by XenServer. http://puu.sh/dkRqH/6158526e22.png
The left side prior to the drop is running 128579. The right side is running "arma3server_performance_136v1"
After 90 minutes server uptime with 50 players, we were seeing 20fps.
After 90 minutes server uptime with 63 players, we see 23 FPS with 75% CPU usage reported by Windows (running arma3server_performance_136v1)
There's definitely an improvement to server fps in "arma3server_performance_136v1" however still not as much as we'd like.
This is still an issue with v4, a virtual server and a dedibox with the same hardware assigned:
100 players (Arma 3 Epoch) server FPS: ~16-17 [dedibox]
66 players (Arma 3 Epoch) server FPS: ~10-15 (fluctuating) [VM]