VMs using hugepages

31 May 2016

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Hello,

I try to get VM's to use hugepages by default. We use them on our manual
VM's set up for libvirt and experience performance advantages. I
installed vdsm-hook-hugepages, but according to
http://www.ovirt.org/develop/developer-guide/vdsm/hook/hugepages/ I have
to set hugepages=SIZE. Engine Web-Fronted doesn't show an option
anywhere to specify this.

I want the VMs to have:

  <memoryBacking>
    <hugepages/>
  </memoryBacking>

Any hint ?

Versions:

vdsm.noarch                           4.17.28-0.el7.centos       @ovirt-3.6
vdsm-cli.noarch                       4.17.28-0.el7.centos       @ovirt-3.6
vdsm-gluster.noarch                   4.17.28-0.el7.centos       @ovirt-3.6
vdsm-hook-hugepages.noarch            4.17.28-0.el7.centos       @ovirt-3.6
vdsm-hook-vmfex-dev.noarch            4.17.28-0.el7.centos       @ovirt-3.6
vdsm-infra.noarch                     4.17.28-0.el7.centos       @ovirt-3.6
vdsm-jsonrpc.noarch                   4.17.28-0.el7.centos       @ovirt-3.6
vdsm-python.noarch                    4.17.28-0.el7.centos       @ovirt-3.6
vdsm-xmlrpc.noarch                    4.17.28-0.el7.centos       @ovirt-3.6
vdsm-yajsonrpc.noarch                 4.17.28-0.el7.centos       @ovirt-3.6

Engine:
ovirt-engine.noarch                        3.6.6.2-1.el7.centos      
@ovirt-3.6

-- 

*Ralf Schenk*
fon +49 (0) 24 05 / 40 83 70
fax +49 (0) 24 05 / 40 83 759
mail *rs@databay.de* <mailto:rs@databay.de>

*Databay AG*
Jens-Otto-Krag-Straße 11
D-52146 Würselen
*www.databay.de* <http://www.databay.de>

Sitz/Amtsgericht Aachen • HRB:8437 • USt-IdNr.: DE 210844202
Vorstand: Ralf Schenk, Dipl.-Ing. Jens Conze, Aresch Yavari, Dipl.-Kfm.
Philipp Hermanns
Aufsichtsratsvorsitzender: Klaus Scholzen (RA)

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    <p>Hello,</p>
    <p>I try to get VM's to use hugepages by default. We use them on our
      manual VM's set up for libvirt and experience performance
      advantages. I installed vdsm-hook-hugepages, but according to
      <a class="moz-txt-link-freetext" href="http://www.ovirt.org/develop/developer-guide/vdsm/hook/hugepages/">http://www.ovirt.org/develop/developer-guide/vdsm/hook/hugepages/</a>
      I have to set hugepages=SIZE. Engine Web-Fronted doesn't show an
      option anywhere to specify this. <br>
    </p>
    <p>I want the VMs to have:</p>
    <p><tt>  <memoryBacking><br>
            <hugepages/><br>
          </memoryBacking><br>
      </tt><br>
    </p>
    <p>Any hint ?<br>
    </p>
    <p>Versions:</p>
    <p><tt>vdsm.noarch                          
        4.17.28-0.el7.centos       @ovirt-3.6</tt><tt><br>
      </tt><tt>vdsm-cli.noarch                      
        4.17.28-0.el7.centos       @ovirt-3.6</tt><tt><br>
      </tt><tt>vdsm-gluster.noarch                  
        4.17.28-0.el7.centos       @ovirt-3.6</tt><tt><br>
      </tt><tt>vdsm-hook-hugepages.noarch           
        4.17.28-0.el7.centos       @ovirt-3.6</tt><tt><br>
      </tt><tt>vdsm-hook-vmfex-dev.noarch           
        4.17.28-0.el7.centos       @ovirt-3.6</tt><tt><br>
      </tt><tt>vdsm-infra.noarch                    
        4.17.28-0.el7.centos       @ovirt-3.6</tt><tt><br>
      </tt><tt>vdsm-jsonrpc.noarch                  
        4.17.28-0.el7.centos       @ovirt-3.6</tt><tt><br>
      </tt><tt>vdsm-python.noarch                   
        4.17.28-0.el7.centos       @ovirt-3.6</tt><tt><br>
      </tt><tt>vdsm-xmlrpc.noarch                   
        4.17.28-0.el7.centos       @ovirt-3.6</tt><tt><br>
      </tt><tt>vdsm-yajsonrpc.noarch                
        4.17.28-0.el7.centos       @ovirt-3.6</tt><tt><br>
      </tt><br>
    </p>
    Engine:<br>
    ovirt-engine.noarch                       
    3.6.6.2-1.el7.centos       @ovirt-3.6<br>
    <br>
    <div class="moz-signature">-- <br>
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            <td colspan="3"><img
                src="cid:part1.FD451D75.B4E6C315@databay.de" height="30"
                border="0" width="151"></td>
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          <tr>
            <td valign="top"> <font face="Verdana, Arial, sans-serif"
                size="-1"><br>
                <b>Ralf Schenk</b><br>
                fon +49 (0) 24 05 / 40 83 70<br>
                fax +49 (0) 24 05 / 40 83 759<br>
                mail <a href="mailto:rs@databay.de"><font
                    color="#FF0000"><b>rs@databay.de</b></font></a><br>
              </font> </td>
            <td width="30"> </td>
            <td valign="top"> <font face="Verdana, Arial, sans-serif"
                size="-1"><br>
                <b>Databay AG</b><br>
                Jens-Otto-Krag-Straße 11<br>
                D-52146 Würselen<br>
                <a href="http://www.databay.de"><font color="#FF0000"><b>www.databay.de</b></font></a>
              </font> </td>
          </tr>
          <tr>
            <td colspan="3" valign="top"> <font face="Verdana, Arial,
                sans-serif" size="1"><br>
                Sitz/Amtsgericht Aachen • HRB:8437 • USt-IdNr.: DE
                210844202<br>
                Vorstand: Ralf Schenk, Dipl.-Ing. Jens Conze, Aresch
                Yavari, Dipl.-Kfm. Philipp Hermanns<br>
                Aufsichtsratsvorsitzender: Klaus Scholzen (RA) </font>
            </td>
          </tr>
        </tbody>
      </table>
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Ralf Schenk

Michal Skrivanek

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