diff options
Diffstat (limited to 'docs/usecases/vhost/vhost02.rst')
| -rw-r--r-- | docs/usecases/vhost/vhost02.rst | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/docs/usecases/vhost/vhost02.rst b/docs/usecases/vhost/vhost02.rst index b9d1f5696c9..d316463c15a 100644 --- a/docs/usecases/vhost/vhost02.rst +++ b/docs/usecases/vhost/vhost02.rst @@ -16,6 +16,7 @@ This is done with a section that looks like this <interface type='vhostuser'> <mac address='52:54:00:4c:47:f2'/> <source type='unix' path='/tmp//vm00.sock' mode='server'/> + <driver rx_queue_size='1024' tx_queue_size='1024'/> <model type='virtio'/> <alias name='net1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> @@ -60,9 +61,10 @@ The VM is now created. Once the virtual machine is created notice the socket filename shows **Success** and there are **Memory Regions**. At this point the VM and FD.io VPP are connected. Also -notice **qsz 256**. This system is running an older version of qemu. A queue size of 256 -will affect vhost throughput. The qsz should be 1024. On the web you should be able to -find ways to install a newer version of qemu or change the queue size. +notice **qsz 1024**. A queue size of 256 will affect vhost throughput. The qsz should +be 1024. In QEMU 2.10.0 and libvirt 3.7.0 and later versions this is specified in the +xml file with the line **<driver rx_queue_size='1024' tx_queue_size='1024'/>** shown above +and in the example. .. code-block:: console @@ -99,11 +101,11 @@ find ways to install a newer version of qemu or change the queue size. 1 32 0x00000000000c0000 0x000000000ff40000 0x00007f1db9cc0000 0x00000000000c0000 0x00007f7d94ec0 000 Virtqueue 0 (TX) - qsz 256 last_avail_idx 0 last_used_idx 0 + qsz 1024 last_avail_idx 0 last_used_idx 0 avail.flags 0 avail.idx 256 used.flags 1 used.idx 0 kickfd 33 callfd 34 errfd -1 Virtqueue 1 (RX) - qsz 256 last_avail_idx 8 last_used_idx 8 + qsz 1024 last_avail_idx 8 last_used_idx 8 avail.flags 0 avail.idx 8 used.flags 1 used.idx 8 kickfd 29 callfd 35 errfd -1 |