Re: [libvirt] [PATCH v3] Add support for virtio-net.tx_queue_size

https://bugzilla.redhat.com/show_bug.cgi?id=1462653 Just like I've added support for setting rx_queue_size (in c56cdf259 and friends), qemu just gained support for setting tx ring size. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- diff to v2: - rebase to current HEAD There's no fundamental change since v1. It's just discussion on this patch that makes me send newer versions because the older ones do not apply cleanly anymore.

diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index 91195be0b..47e21c10d 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in

@@ -5204,6 +5204,20 @@ qemu-kvm -net nic,model=? /dev/null <b>In general you should leave this option alone, unless you are very certain you know what you are doing.</b> </dd> + <dt><code>tx_queue_size</code></dt> + <dd> + The optional <code>tx_queue_size</code> attribute controls + the size of virtio ring for each queue as described above. + The default value is hypervisor dependent and may change + across its releases. Moreover, some hypervisors may pose + some restrictions on actual value. For instance, latest + QEMU (as of 2017-07-13) requires value to be a power of two

+ from [256, 1024] range. + <span class="since">Since 3.6.0 (QEMU and KVM only)</span><br/><br/>

+ + <b>In general you should leave this option alone, unless you + are very certain you know what you are doing.</b> + </dd>