<?xml version="1.0" encoding="UTF-8"?>
<rss xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:taxo="http://purl.org/rss/1.0/modules/taxonomy/" version="2.0">
  <channel>
    <title>topic 10 Gigabit VM Networking Questions. in vSphere™ vNetwork Discussions</title>
    <link>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10-Gigabit-VM-Networking-Questions/m-p/744481#M2039</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;I am lab testing Intel Dual Port 10 Gigabit NICs ( Intel Corporation 82598EB 10-Gigabit AT CX4 ) to assess the performance and whether I can virtualize some network dependent servers.   It is working, but I am not confident I have it all working as well as it could.   Some questions I have are:&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;- Is an individual VM throttled to 1Gbps?  I get throughput to an individual VM at ~1Gbps.  But, if I connect to more than one, all connected via the same 10Gig Ethernet NIC, I get several Gbps.    Is there a rate limiting going on (No, I don't have any QoS defined in the vSwitch).&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;- In ESX3.5, you had to manually configure NetQueue,  is it enabled by default in vSphere, or do I need to manually enable it?  Can I view the status of the NIC features anywhere?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;- Similar to the NetQueue enabling,   is there a process for enabling Jumbo Frames?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Any other tips or documents for a 10Gig setup?&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Fri, 05 Jun 2009 21:29:09 GMT</pubDate>
    <dc:creator>natewilson</dc:creator>
    <dc:date>2009-06-05T21:29:09Z</dc:date>
    <item>
      <title>10 Gigabit VM Networking Questions.</title>
      <link>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10-Gigabit-VM-Networking-Questions/m-p/744481#M2039</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;I am lab testing Intel Dual Port 10 Gigabit NICs ( Intel Corporation 82598EB 10-Gigabit AT CX4 ) to assess the performance and whether I can virtualize some network dependent servers.   It is working, but I am not confident I have it all working as well as it could.   Some questions I have are:&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;- Is an individual VM throttled to 1Gbps?  I get throughput to an individual VM at ~1Gbps.  But, if I connect to more than one, all connected via the same 10Gig Ethernet NIC, I get several Gbps.    Is there a rate limiting going on (No, I don't have any QoS defined in the vSwitch).&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;- In ESX3.5, you had to manually configure NetQueue,  is it enabled by default in vSphere, or do I need to manually enable it?  Can I view the status of the NIC features anywhere?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;- Similar to the NetQueue enabling,   is there a process for enabling Jumbo Frames?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Any other tips or documents for a 10Gig setup?&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Fri, 05 Jun 2009 21:29:09 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10-Gigabit-VM-Networking-Questions/m-p/744481#M2039</guid>
      <dc:creator>natewilson</dc:creator>
      <dc:date>2009-06-05T21:29:09Z</dc:date>
    </item>
    <item>
      <title>Re: 10 Gigabit VM Networking Questions.</title>
      <link>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10-Gigabit-VM-Networking-Questions/m-p/744482#M2040</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;BLOCKQUOTE level="1"&gt;&lt;PRE __jive_macro_name="quote" title="natewilson wrote:"&gt;&lt;/PRE&gt;&lt;P&gt;- Is an individual VM throttled to 1Gbps?  I get throughput to an individual VM at ~1Gbps.  But, if I connect to more than one, all connected via the same 10Gig Ethernet NIC, I get several Gbps.    Is there a rate limiting going on (No, I don't have any QoS defined in the vSwitch).&lt;/P&gt;&lt;/BLOCKQUOTE&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;No, the VMs can push as fast as they have CPU for (unless you use traffic shaping, obviously). The link speed shown in a guest is a dummy one.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;BLOCKQUOTE level="1"&gt;&lt;P&gt;- In ESX3.5, you had to manually configure NetQueue,  is it enabled by default in vSphere, or do I need to manually enable it?  Can I view the status of the NIC features anywhere?&lt;/P&gt;&lt;/BLOCKQUOTE&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;it should be on by default I believe.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;BLOCKQUOTE level="1"&gt;&lt;P&gt;- Similar to the NetQueue enabling,   is there a process for enabling Jumbo Frames?&lt;/P&gt;&lt;/BLOCKQUOTE&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Change the MTU of the vSwitch, change the MTU of the guest, and you're good to go.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;BLOCKQUOTE level="1"&gt;&lt;P&gt;Any other tips or documents for a 10Gig setup?&lt;/P&gt;&lt;/BLOCKQUOTE&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Not really, except that we recommend using paravirtualized adapters like Enhanced Vmxnet or Vmxnet3 for maximum performance.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;We can easily drive mutliple Gb/s with a single VM with our setups, so there's probably a lot of room for improvement in yours.&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Fri, 05 Jun 2009 21:52:46 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10-Gigabit-VM-Networking-Questions/m-p/744482#M2040</guid>
      <dc:creator>RenaudL</dc:creator>
      <dc:date>2009-06-05T21:52:46Z</dc:date>
    </item>
  </channel>
</rss>

