https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=250516
Bug ID: 250516
Summary: Poor performance if running as guest OS on QEMU
Product: Base System
Version: 12.1-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: misc
Assignee: [email protected]
Reporter: [email protected]
Hi,
I am new here and trying to find answers to the issue described below.
We make PCI chip which mainly plugged in Linux systems.
If I installed FreeBSD 12.1 on actual HW (i.e. x86), PCI throughput is fine and
compatible with other Linux OSes like Ubuntu or CentOS.
But, if I run it as a guest OS on QEMU, then the PCI throughput is very very
low. This is compared to the same tests I run on Ubuntu or CentOS as guest OS
on the same QEMU.
So, I would like to know:
1. Do you have any report about the same situation: PCI throughput is very low
if FreeBSD runs as guest OS on QEMU?
2. What kind of data you need me to capture in order for you to debug further?
Please let me know.
Thanks.
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