<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Oct 31, 2017 at 2:25 PM, FERNANDO FREDIANI <span dir="ltr"><<a href="mailto:fernando.frediani@upx.com" target="_blank">fernando.frediani@upx.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p>Hi.</p>
Does the virtualization layer causes any significant impact in the
VM performance, even a high CPU VM that justify the use of this
feature ?<br></div></blockquote><div><br></div><div>Depends on your definition of 'significant' and on the workload. Certainly enabling huge pages, NUMA setting and removal of some unneeded devices can help some workloads.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div bgcolor="#FFFFFF" text="#000000">
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DPDK for sure is a fantastic feature for networking environments.</div></blockquote><div><br></div><div>A bit over-rated, for most workloads, if you ask me...</div><div>Currently requires a bit too much configuration (in my opinion), but certainly there are workloads who critically need it.</div><div>Y.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div bgcolor="#FFFFFF" text="#000000"><span class="HOEnZb"><font color="#888888"><br>
<br>
Fernando</font></span><div><div class="h5"><br>
<br>
<div class="m_-8272792911555066174moz-cite-prefix">On 31/10/2017 05:56, Yaniv Kaul wrote:<br>
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<div class="gmail_quote">On Mon, Oct 30, 2017 at 9:33 PM,
Vinícius Ferrão <span dir="ltr"><<a href="mailto:ferrao@if.ufrj.br" target="_blank">ferrao@if.ufrj.br</a>></span>
wrote:<br>
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Hello John,
<div><br>
</div>
<div>This is very interesting news for HPC guys.
Accordingly to the blog post there's a new “CPU
passthrough” function. Which is interesting.</div>
<div><br>
</div>
<div>Do you guys are targeting which market? I’m looking
forward for virtual nodes on a HPC environment.</div>
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</blockquote>
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<div>Any intensive workload, CPU and memory bound
especially, would benefit from the configuration.</div>
<div>In memory DBs (SAP Hana, Redis and friends) for
example, MapReduce (Hadoop), etc. </div>
<div><br>
</div>
<div>For some workloads, low latency networking is also
important (especially for nodes inter-communication) and
we are looking at DPDK for it. See[1].</div>
<div><br>
</div>
<div>Y.</div>
<div><br>
</div>
<div>[1] <a href="https://www.ovirt.org/blog/2017/09/ovs-dpdk/" target="_blank">https://www.ovirt.org/<wbr>blog/2017/09/ovs-dpdk/</a></div>
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<div>Thanks,</div>
<div>V.</div>
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<div class="m_-8272792911555066174gmail-h5">
<div>On 30 Oct 2017, at 07:38, John Marks <<a href="mailto:jmarks@redhat.com" target="_blank">jmarks@redhat.com</a>>
wrote:</div>
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<div style="font-size:12.8px">Hello!</div>
<div style="font-size:12.8px">Just a
quick heads up that there is a new
post on the oVirt blog:</div>
<div style="font-size:12.8px"><br>
</div>
<div style="font-size:12.8px"><a href="https://ovirt.org/blog/2017/10/introducing-high-performance-vms/" target="_blank">Introducing
High Performance Virtual Machines </a><br>
</div>
<div style="font-size:12.8px"><br>
</div>
<div style="font-size:12.8px">In a
nutshell:</div>
<div style="font-size:12.8px"><br>
</div>
<div style="font-size:12.8px">
<div style="font-size:12.8px">oVirt
4.2.0 Alpha, released on September
28, features a new high performance
virtual machine type. It brings VM
performance closer to bare metal
performance. <a href="https://ovirt.org/blog/2017/10/introducing-high-performance-vms/" target="_blank">Read the
blog post.</a></div>
<div style="font-size:12.8px"><br>
</div>
<div style="font-size:12.8px">See you
on the oVirt blog!</div>
</div>
<div style="font-size:12.8px"><br>
</div>
<div style="font-size:12.8px">Best,</div>
<div style="font-size:12.8px"><br>
</div>
<div style="font-size:12.8px">John</div>
</div>
-- <br>
<div class="m_-8272792911555066174gmail-m_6714293851935917946gmail_signature">
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<div>
<div>John Marks</div>
<div><span style="font-size:12.8px">Technical
Writer, oVirt</span></div>
</div>
<div><span style="font-size:12.8px">redhat
Israel</span><br>
</div>
<div>Cell: +972 52 8644
491<br>
<br>
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