<div dir="ltr"><br><br><div class="gmail_quote"><div dir="ltr">On Tue, Mar 14, 2017 at 12:57 PM Davide Ferrari <<a href="mailto:davide@billymob.com">davide@billymob.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class="gmail_msg"><div class="gmail_msg"><div class="gmail_msg"><div class="gmail_msg">Hello<br class="gmail_msg"><br class="gmail_msg"></div>the oVirt hosts in my cluster have all 10GbE interfaces (bonded 2 by 2), and I was wondering if a single Linux VM with a virtio interface can reach for example 8Gbps.<br class="gmail_msg"></div></div></div></blockquote><div><br></div><div>Are you able from the host, first of all?</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class="gmail_msg"><div class="gmail_msg"><div class="gmail_msg"><br class="gmail_msg"></div>I'm asking because I'm seeing a 100% network usage in some VMs in ovirt VM dashboard but the real traffic in that VM is between 1-2Gbps.<br class="gmail_msg"></div></div></blockquote><div><br></div><div>You might be able to, but it's not easy. You'll need to use NUMA and set correctly the vCPUs pinning, perform correct tuning (multiple queues) and so on. With SR-IOV I assume there's a better chance (lower latency), btw.</div><div><br></div><div>Traffic shown in the dashboard is averaged, is it a sustained 8Gbps or bursty?</div><div>Y.</div><div><br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class="gmail_msg"><div class="gmail_msg"><br class="gmail_msg"></div>Thanks<br clear="all" class="gmail_msg"><div class="gmail_msg"><div class="gmail_msg"><div class="gmail_msg"><div class="gmail_msg"><br class="gmail_msg">-- <br class="gmail_msg"><div class="m_3952850080759979104gmail_signature gmail_msg" data-smartmail="gmail_signature"><div dir="ltr" class="gmail_msg"><div class="gmail_msg">Davide Ferrari<br class="gmail_msg"></div>Senior Systems Engineer<br class="gmail_msg"></div></div>
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