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Hi Mike,<br>
<br>
Saso is correct; we bumped into that one too.<br>
<br>
However, as long as you're running BIRD in a VM and OVS is outside
the VM there's no issue.<br>
<br>
K.<br>
<br>
<div class="moz-cite-prefix">On 08-07-2020 08:58, Saso Tavcar wrote:<br>
</div>
<blockquote type="cite"
cite="mid:640041EF-047A-4A86-94C4-A4C70999ECD5@ais42.net">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
Hi,
<div class=""><br class="">
</div>
<div class="">There is a known issue with with Open vSwitch (OVS)
performance with BGP.</div>
<div class="">Even without OVS we hit IRQ (too many) issue on
"physical" network in our KVM</div>
<div class="">environment.</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">
<div class="">Official OVS quote:</div>
<div class="">
<pre class="" style="white-space: pre-wrap; background-color: rgb(255, 255, 255);">><i class=""> We'd accept patches to improve OVS's routing table code. It's not
</i>><i class=""> designed to scale to 1,800,000 routes. We'd also take code to suppress
</i>><i class=""> the routing table code in cases where it isn't actually needed, since
</i>><i class=""> it's not always needed. But we can't take a patch to just delete it;
</i>><i class=""> I'm sure you understand.</i></pre>
</div>
<div class="">I tried to apply this patch at that time, but was
already useless for newer versions:</div>
<div class=""><br class="">
</div>
<div class=""><font class="" color="#0068da"><span class=""><u
class=""><a
href="https://mail.openvswitch.org/pipermail/ovs-discuss/attachments/20161123/5379b333/attachment.bin"
class="" moz-do-not-send="true">https://mail.openvswitch.org/pipermail/ovs-discuss/attachments/20161123/5379b333/attachment.bin</a></u></span></font></div>
<div class=""><br class="">
</div>
<div class="">Our workaround was to scale VM with 3 vCPU-s,
since our average system load is 1.5 for BGP.</div>
<div class=""><br class="">
</div>
<div class="">You can see what is happening:</div>
<div class=""><br class="">
</div>
<div class="">
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">[root@bgp1
~]# top</span></div>
</div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">...</span></div>
<div class="">
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
color: rgb(171, 205, 239); background-color: rgb(0, 0, 0);"><span
class="" style="font-variant-ligatures:
no-common-ligatures;"> PID USER PR NI VIRT
RES SHR S %CPU %MEM TIME+ COMMAND
</span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;"><b
class=""> 654 root 10 -10 1284492 1.0g 20276 R
98.0 27.0 2513:01 ovs-vswitchd
</b></span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;"> 16
root 20 0 0 0 0 S 2.0 0.0
24:45.60 ksoftirqd/1 </span></div>
</div>
<div class=""><br class="">
</div>
<div class="">
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">[root@bgp1
~]# ip route show</span></div>
</div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">...</span></div>
<div class="">
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">1.0.0.0/24
via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">1.0.4.0/24
via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">1.0.4.0/22
via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">1.0.5.0/24
via 89.212.xx.xx dev t2-v24-ha proto bird</span></div>
</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">Routes being constantly added and deleted:</div>
<div class=""><br class="">
</div>
<div class="">
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">[root@bgp1
~]# ip monitor</span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">...</span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">Deleted
2620:11d:6000::/42 via 2a01:xxx:xxx::1 dev t2-v26-ha proto
bird metric 1024 pref medium</span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">2620:11d:6000::/42
via 2a01:xxx:xxx::1 dev t2-v26-ha proto bird metric 1024
pref medium</span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">Deleted
2620:11d:6000::/42 via 2a01:xxx:xxx::1 dev t2-v26-ha proto
bird metric 1024 pref medium</span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">2620:11d:6000::/42
via 2a01:xxx:xxx::1 dev t2-v26-ha proto bird metric 1024
pref medium</span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">Deleted
2620:11d:6000::/42 via 2a01:xxx:xxx::1 dev t2-v26-ha proto
bird metric 1024 pref medium</span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">2620:11d:6000::/42
via 2a01:xxx:xxx::1 dev t2-v26-ha proto bird metric 1024
pref medium</span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">Deleted
68.69.37.0/24 via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">68.69.37.0/24
via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">Deleted
103.115.180.0/22 via 89.212.xx.xx dev t2-v24-ha proto
bird </span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">103.115.180.0/22
via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">Deleted
103.115.180.0/22 via 89.212.xx.xx dev t2-v24-ha proto
bird </span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">103.115.180.0/22
via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">Deleted
2.16.70.0/23 via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">Deleted
88.221.28.0/22 via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">Deleted
23.50.188.0/22 via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">Deleted
92.122.68.0/22 via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">Deleted
88.221.100.0/22 via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">Deleted
92.123.208.0/22 via 89.212.xx.xx dev t2-v24-ha proto bird</span></div>
<div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;
background-color: rgb(171, 205, 239);"><span class=""
style="font-variant-ligatures: no-common-ligatures;">..... </span></div>
</div>
<div class=""><br class="">
</div>
</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">Regards,</div>
<div class="">saso<br class="">
<div><br class="">
<blockquote type="cite" class="">
<div class="">On 8 Jul 2020, at 08:05, Mike Neo <<a
href="mailto:neomikemac@gmail.com" class=""
moz-do-not-send="true">neomikemac@gmail.com</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div dir="ltr" class="">Hi,
<div class=""><br class="">
</div>
<div class="">what is your experience with installing
bird on virtual server (ESXi)? Is there any limitation
of this kind of deployment for example problems with
performance etc.?</div>
<div class=""><br class="">
</div>
<div class="">Regards,</div>
<div class="">Mike</div>
</div>
</div>
</blockquote>
</div>
<br class="">
</div>
</blockquote>
<br>
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