Hello.
I am starting to explore bhyve on this old hardware:
hm.model: Intel(R) Pentium(R) CPU G645 @ 2.90GHz
ram: 4GB
ada0: ATA8-ACS SATA 3.x device
root is on ZFS
i have inslalled 3 VMs on this machine:
1) FreeBSD 14 (UFS)
2) OpenBSD 7.4
3) Debian 12
All have same parameters: 20GB virtio-blk disk, 512MB RAM, 2 x vCPU, virtio-net network interface and are connected to the same bridge.
My first measurement was network from host to guest. On each guest is running: iperf -s
and connection is started from host machine: iperf -c 10.0.0.x
results are here:
1) Debian -> 2.85 Gbits/s
2) OpenBSD -> 857 MBits/s
3) FreeBSD -> 532Mbits/s
Surprisingly FreeBSD has the worst results.
I tried some tweaks like this, but without any noticeable change:
hw.vtnet.csum_disable=1
hw.vtnet.tso_disable=1
Then I tried communication between two guest:
Debian VM <-----> Debian VM => 800-1100Mbits/s
FreeBSD VM <----> FreeBSD VM => 60-100Mbits/s
What could be couse of such radical difference in network throughput? I have tried emulated e1000 network interface too but it was much worse. I have increased RAM to 1GB as another try but it was almost same.
Any ideas please?
Thank you.
I am starting to explore bhyve on this old hardware:
hm.model: Intel(R) Pentium(R) CPU G645 @ 2.90GHz
ram: 4GB
ada0: ATA8-ACS SATA 3.x device
root is on ZFS
i have inslalled 3 VMs on this machine:
1) FreeBSD 14 (UFS)
2) OpenBSD 7.4
3) Debian 12
All have same parameters: 20GB virtio-blk disk, 512MB RAM, 2 x vCPU, virtio-net network interface and are connected to the same bridge.
My first measurement was network from host to guest. On each guest is running: iperf -s
and connection is started from host machine: iperf -c 10.0.0.x
results are here:
1) Debian -> 2.85 Gbits/s
2) OpenBSD -> 857 MBits/s
3) FreeBSD -> 532Mbits/s
Surprisingly FreeBSD has the worst results.
I tried some tweaks like this, but without any noticeable change:
hw.vtnet.csum_disable=1
hw.vtnet.tso_disable=1
Then I tried communication between two guest:
Debian VM <-----> Debian VM => 800-1100Mbits/s
FreeBSD VM <----> FreeBSD VM => 60-100Mbits/s
What could be couse of such radical difference in network throughput? I have tried emulated e1000 network interface too but it was much worse. I have increased RAM to 1GB as another try but it was almost same.
Any ideas please?
Thank you.