Ubuntu
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  1. Bug #1570195
  2. Comment #8

Comment 8 for bug 1570195

Revision history for this message
Christian Ehrhardt  (paelzer) wrote : Re: Network tools like "ethtool" or "ip" freezes when DPDK Apps are running with VirtIO

This is not happeneing on a ixgbe device that formerly was used by DPDK.
But then, that device had to be bound to uio_pci_generic and rebound to be reachable by ethtool.

Now in the virtual environment force a reinit of the driver after DPDK used it

Reinitialize the driver by rebinding it
apt-get install linux-image-extra-virtual
/usr/bin/testpmd --pci-blacklist 0000:00:03.0 --socket-mem 2048 -- --interactive --total-num-mbufs=2048
dpdk_nic_bind -b uio_pci_generic 0000:00:04.0
dpdk_nic_bind -b virtio-pci 0000:00:04.0

We see the device "reinitialized" back on the virtio-pci driver.
It is also back to 1 of 4 queues being used (as after the reboot.

Now this works fine:
ethtool -L eth1 combined 4
ethtool -L eth1 combined 3
ethtool -L eth1 combined 4