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Has anyone rated the performance of a virtual machine for build servers?

We tried to use virtual machines for build servers. Our build servers are running WinXP32, and we host them on a VMWare 2.0 server running on Ubuntu 9.10. We create a combination of C, C ++, python packages and other various deployment tasks (installers, 7z files, archives, etc.). Managing using VMWare build server servers is excellent. We can move them, share system resources on one large 8-core box, remotely access systems through a web interface and just basically manage things better.

But the problem is that performance compared to using a physical machine ranges from bad to horror depending on what day it is. It turned out to be very frustrating. Sometimes the system load for the host will exceed 20, and several times it will be below 1. It seems that it is not based on how much work is actually performed on the systems. I suspect there is a bottleneck in the system, but I can’t understand what it is. (the most recent suspect is I / O, but we have a dedicated 1TB 7200RPM SATA 2 drive with 32 MB of cache that does nothing but virtual machines. It seems to be enough for 1-2 machines. All other specifications also seem to be sufficient., 2 GB on VM, 8 cores, 1 on vm).

So, after exhausting all that I can think of, I wanted to turn to the Stack Overflow community.

  • Someone runs or sees someone else run benchmarks for building software in a virtual machine.
  • What should we expect from a physical system?
  • What kind of performance do we refuse?
  • What hardware / vm server configuration do people use?

Any help would be greatly appreciated.

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Source: https://habr.com/ru/post/1732427/

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