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<p class=MsoNormal><font size=2 face=Arial><span lang="EN-GB" DEFANGED_style="font-size:
10.0pt;font-family:Arial">Hello,<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang="EN-GB" DEFANGED_style="font-size:
10.0pt;font-family:Arial"><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang="EN-GB" DEFANGED_style="font-size:
10.0pt;font-family:Arial">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
I&#8217;ve setup WAN emulation on a 4x1Gbps Ethernet port Dell SC1425 with Xeon
EMT64.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang="EN-GB" DEFANGED_style="font-size:
10.0pt;font-family:Arial">I have NetEm setup with 100ms delay, no other
impairement on egress of 3 of my interfaces.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang="EN-GB" DEFANGED_style="font-size:
10.0pt;font-family:Arial">I&#8217;m using ping to check NetEm behaviour that
report ~200ms RTT between each of my branches.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang="EN-GB" DEFANGED_style="font-size:
10.0pt;font-family:Arial">However, when measuring response time of some
applications other this setup. I&#8217;m seeing a changing behaviour after my
router is up for a few days: the response time is improving significantly
&#8230; but the ping stays the same ! *<b><span DEFANGED_style="font-weight:bold">Rebooting
the router brings the response time to what it was originally &#8230;</span></b>*<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang="EN-GB" DEFANGED_style="font-size:
10.0pt;font-family:Arial"><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang="EN-GB" DEFANGED_style="font-size:
10.0pt;font-family:Arial">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Well &#8230; don&#8217;t know if anybody can help with this.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang="EN-GB" DEFANGED_style="font-size:
10.0pt;font-family:Arial">My kernel is 2.6.17 on fedora core 5 &#8211; compiled
in 32 bits with SMP disabled (to minimize risks ..).<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang="EN-GB" DEFANGED_style="font-size:
10.0pt;font-family:Arial"><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang="EN-GB" DEFANGED_style="font-size:
10.0pt;font-family:Arial">Cheers,<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang="EN-GB" DEFANGED_style="font-size:
10.0pt;font-family:Arial"><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang="EN-GB" DEFANGED_style="font-size:
10.0pt;font-family:Arial">Frank<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang="EN-GB" DEFANGED_style="font-size:
10.0pt;font-family:Arial"><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=3 face="Times New Roman"><span lang="EN-GB"
DEFANGED_style="font-size:12.0pt"><o:p>&nbsp;</o:p></span></font></p>

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