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    When was that introduced?<br>
    <br>
    On 15/12/11 18:15, Anthony Minessale wrote:
    <blockquote
cite="mid:CAKbxfG_OHV5AY5OKYjVPbYRvuBKdoytqJzonsSjkgK5pXjTNbA@mail.gmail.com"
      type="cite">If you use latest GIT, it uses timerfd which should
      work regardless of the kernel speed, ticklessness etc.
      <div><br>
        <div><br>
          <br>
          <div class="gmail_quote">2011/12/15 Henrik Aagaard S&oslash;rensen <span
              dir="ltr">&lt;<a moz-do-not-send="true"
                href="mailto:henrikaagaardsorensen@gmail.com">henrikaagaardsorensen@gmail.com</a>&gt;</span><br>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">Thank
              you John. I'll try that.
              <div>
                <div class="h5"><br>
                  <br>
                  <div class="gmail_quote">On Thu, Dec 15, 2011 at 12:08
                    PM, John <span dir="ltr">&lt;<a
                        moz-do-not-send="true"
                        href="mailto:freeswitch@earthspike.net"
                        target="_blank">freeswitch@earthspike.net</a>&gt;</span>
                    wrote:<br>
                    <blockquote class="gmail_quote" style="margin:0 0 0
                      .8ex;border-left:1px #ccc solid;padding-left:1ex">
                      Henrik,<br>
                      <br>
                      I and some others have had problems with the 100Hz
                      Ubuntu 10.04 LTS<br>
                      kernel. &nbsp;All appeared to work for some days but
                      occasionally choppy<br>
                      calls occur, often only in one direction. &nbsp;We run
                      a Sangoma BRI card<br>
                      (B700) and the problem manifests on the outgoing
                      path. &nbsp;I have recently<br>
                      changed to the Ubuntu preemptive kernel (no kernel
                      recompilation<br>
                      required!) which has the 1000Hz timer and
                      low-latency interrupt<br>
                      response. After 10 days running so far, it appears
                      to have cured the<br>
                      problem.<br>
                      <br>
                      Installing the pre-emptive kernel:<br>
                      <br>
                      sudo apt-get install linux-image-preempt
                      linux-headers-preempt<br>
                      <br>
                      You will need the linux-headers-preempt if you
                      need to rebuild kernel<br>
                      drivers for any hardware (which I do).<br>
                      <br>
                      You will be pleased to hear that you do not need
                      to reinstall your<br>
                      FreeSWITCH installation; the whole job takes less
                      than 5 minutes.<br>
                      <span><font color="#888888"><br>
                          John<br>
                        </font></span>
                      <div>
                        <div><br>
                          On 15/12/11 09:16, Fran&ccedil;ois Delawarde wrote:<br>
                          &gt; Did you test with your 100hz kernel? It
                          might work for your scenario.<br>
                          &gt;<br>
                          &gt;<br>
                          &gt; On Thu, 2011-12-15 at 00:50 +0100, Henrik
                          Aagaard S&oslash;rensen wrote:<br>
                          &gt;&gt; I've read a lot about the kernel
                          timer and how it should be on 1000hz.<br>
                          &gt;&gt; My clean install of Ubuntu has 100hz.
                          So I guess I have to recompile<br>
                          &gt;&gt; the kernel to 1000hz?<br>
                          &gt;&gt;<br>
                          &gt;&gt;<br>
                          &gt;&gt; If so, does I have to reinstall
                          FreeSWITCH after the new kernel<br>
                          &gt;&gt; compile?<br>
                          &gt;&gt;<br>
                          &gt;&gt;<br>
                          &gt;&gt; And does anyone knows of any tutorial
                          about recompiling a Ubuntu 10.04<br>
                          &gt;&gt; LTS kernel to 1000hz?<br>
                          &gt;<br>
                          &gt;<br>
                          &gt;
_________________________________________________________________________<br>
                          &gt; Professional FreeSWITCH Consulting
                          Services:<br>
                          &gt; <a moz-do-not-send="true"
                            href="mailto:consulting@freeswitch.org"
                            target="_blank">consulting@freeswitch.org</a><br>
                          &gt; <a moz-do-not-send="true"
                            href="http://www.freeswitchsolutions.com"
                            target="_blank">http://www.freeswitchsolutions.com</a><br>
                          &gt;<br>
                          &gt; FreeSWITCH-powered IP PBX: The CudaTel
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                            target="_blank">http://www.cudatel.com</a><br>
                          &gt;<br>
                          &gt; Official FreeSWITCH Sites<br>
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                            href="http://www.freeswitch.org"
                            target="_blank">http://www.freeswitch.org</a><br>
                          &gt; <a moz-do-not-send="true"
                            href="http://wiki.freeswitch.org"
                            target="_blank">http://wiki.freeswitch.org</a><br>
                          &gt; <a moz-do-not-send="true"
                            href="http://www.cluecon.com"
                            target="_blank">http://www.cluecon.com</a><br>
                          &gt;<br>
                          &gt; FreeSWITCH-users mailing list<br>
                          &gt; <a moz-do-not-send="true"
                            href="mailto:FreeSWITCH-users@lists.freeswitch.org"
                            target="_blank">FreeSWITCH-users@lists.freeswitch.org</a><br>
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                            href="http://lists.freeswitch.org/mailman/listinfo/freeswitch-users"
                            target="_blank">http://lists.freeswitch.org/mailman/listinfo/freeswitch-users</a><br>
                          &gt; UNSUBSCRIBE:<a moz-do-not-send="true"
                            href="http://lists.freeswitch.org/mailman/options/freeswitch-users"
                            target="_blank">http://lists.freeswitch.org/mailman/options/freeswitch-users</a><br>
                          &gt; <a moz-do-not-send="true"
                            href="http://www.freeswitch.org"
                            target="_blank">http://www.freeswitch.org</a><br>
                          <br>
                          <br>
_________________________________________________________________________<br>
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                            href="mailto:consulting@freeswitch.org"
                            target="_blank">consulting@freeswitch.org</a><br>
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                            href="http://www.freeswitchsolutions.com"
                            target="_blank">http://www.freeswitchsolutions.com</a><br>
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                            target="_blank">http://www.cudatel.com</a><br>
                          <br>
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                          <a moz-do-not-send="true"
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                            target="_blank">http://www.freeswitch.org</a><br>
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                        </div>
                      </div>
                    </blockquote>
                  </div>
                  <br>
                </div>
              </div>
              <br>
_________________________________________________________________________<br>
              Professional FreeSWITCH Consulting Services:<br>
              <a moz-do-not-send="true"
                href="mailto:consulting@freeswitch.org">consulting@freeswitch.org</a><br>
              <a moz-do-not-send="true"
                href="http://www.freeswitchsolutions.com"
                target="_blank">http://www.freeswitchsolutions.com</a><br>
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              Server<br>
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                target="_blank">http://www.cudatel.com</a><br>
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              Official FreeSWITCH Sites<br>
              <a moz-do-not-send="true" href="http://www.freeswitch.org"
                target="_blank">http://www.freeswitch.org</a><br>
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                href="http://wiki.freeswitch.org" target="_blank">http://wiki.freeswitch.org</a><br>
              <a moz-do-not-send="true" href="http://www.cluecon.com"
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                href="mailto:FreeSWITCH-users@lists.freeswitch.org">FreeSWITCH-users@lists.freeswitch.org</a><br>
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              <br>
            </blockquote>
          </div>
          <br>
          <br clear="all">
          <div><br>
          </div>
          -- <br>
          Anthony Minessale II<br>
          <br>
          FreeSWITCH <a moz-do-not-send="true"
            href="http://www.freeswitch.org/">http://www.freeswitch.org/</a><br>
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            href="http://twitter.com/FreeSWITCH_wire">http://twitter.com/FreeSWITCH_wire</a><br>
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          #freeswitch<br>
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          pstn:+19193869900<br>
        </div>
      </div>
      <br>
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      <br>
      <pre wrap="">_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
<a class="moz-txt-link-abbreviated" href="mailto:consulting@freeswitch.org">consulting@freeswitch.org</a>
<a class="moz-txt-link-freetext" href="http://www.freeswitchsolutions.com">http://www.freeswitchsolutions.com</a>

FreeSWITCH-powered IP PBX: The CudaTel Communication Server
<a class="moz-txt-link-freetext" href="http://www.cudatel.com">http://www.cudatel.com</a>

Official FreeSWITCH Sites
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</pre>
    </blockquote>
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