<div dir="ltr">Great, thanks! <br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">śr., 8 lip 2020 o 09:19 Kees Meijs <<a href="mailto:kees@nefos.nl">kees@nefos.nl</a>> napisał(a):<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
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>On 08-07-2020 08:58, Saso Tavcar wrote:<br>
</div>
<blockquote type="cite">
Hi,
<div><br>
</div>
<div>There is a known issue with with Open vSwitch (OVS)
performance with BGP.</div>
<div>Even without OVS we hit IRQ (too many) issue on
"physical" network in our KVM</div>
<div>environment.</div>
<div><br>
</div>
<div><br>
</div>
<div>
<div>Official OVS quote:</div>
<div>
<pre style="white-space:pre-wrap;background-color:rgb(255,255,255)">><i> We'd accept patches to improve OVS's routing table code. It's not
</i>><i> designed to scale to 1,800,000 routes. We'd also take code to suppress
</i>><i> the routing table code in cases where it isn't actually needed, since
</i>><i> it's not always needed. But we can't take a patch to just delete it;
</i>><i> I'm sure you understand.</i></pre>
</div>
<div>I tried to apply this patch at that time, but was
already useless for newer versions:</div>
<div><br>
</div>
<div><font color="#0068da"><span><u><a href="https://mail.openvswitch.org/pipermail/ovs-discuss/attachments/20161123/5379b333/attachment.bin" target="_blank">https://mail.openvswitch.org/pipermail/ovs-discuss/attachments/20161123/5379b333/attachment.bin</a></u></span></font></div>
<div><br>
</div>
<div>Our workaround was to scale VM with 3 vCPU-s,
since our average system load is 1.5 for BGP.</div>
<div><br>
</div>
<div>You can see what is happening:</div>
<div><br>
</div>
<div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">[root@bgp1
~]# top</span></div>
</div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">...</span></div>
<div>
<div 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 style="font-variant-ligatures:no-common-ligatures"> PID USER PR NI VIRT
RES SHR S %CPU %MEM TIME+ COMMAND
</span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures"><b> 654 root 10 -10 1284492 1.0g 20276 R
98.0 27.0 2513:01 ovs-vswitchd
</b></span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span 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><br>
</div>
<div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">[root@bgp1
~]# ip route show</span></div>
</div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">...</span></div>
<div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures"><a href="http://1.0.0.0/24" target="_blank">1.0.0.0/24</a>
via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures"><a href="http://1.0.4.0/24" target="_blank">1.0.4.0/24</a>
via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures"><a href="http://1.0.4.0/22" target="_blank">1.0.4.0/22</a>
via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures"><a href="http://1.0.5.0/24" target="_blank">1.0.5.0/24</a>
via 89.212.xx.xx dev t2-v24-ha proto bird</span></div>
</div>
<div><br>
</div>
<div><br>
</div>
<div>Routes being constantly added and deleted:</div>
<div><br>
</div>
<div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">[root@bgp1
~]# ip monitor</span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">...</span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span 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 style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span 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 style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span 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 style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span 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 style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span 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 style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span 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 style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">Deleted
<a href="http://68.69.37.0/24" target="_blank">68.69.37.0/24</a> via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures"><a href="http://68.69.37.0/24" target="_blank">68.69.37.0/24</a>
via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">Deleted
<a href="http://103.115.180.0/22" target="_blank">103.115.180.0/22</a> via 89.212.xx.xx dev t2-v24-ha proto
bird </span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures"><a href="http://103.115.180.0/22" target="_blank">103.115.180.0/22</a>
via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">Deleted
<a href="http://103.115.180.0/22" target="_blank">103.115.180.0/22</a> via 89.212.xx.xx dev t2-v24-ha proto
bird </span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures"><a href="http://103.115.180.0/22" target="_blank">103.115.180.0/22</a>
via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">Deleted
<a href="http://2.16.70.0/23" target="_blank">2.16.70.0/23</a> via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">Deleted
<a href="http://88.221.28.0/22" target="_blank">88.221.28.0/22</a> via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">Deleted
<a href="http://23.50.188.0/22" target="_blank">23.50.188.0/22</a> via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">Deleted
<a href="http://92.122.68.0/22" target="_blank">92.122.68.0/22</a> via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">Deleted
<a href="http://88.221.100.0/22" target="_blank">88.221.100.0/22</a> via 89.212.xx.xx dev t2-v24-ha proto bird </span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">Deleted
<a href="http://92.123.208.0/22" target="_blank">92.123.208.0/22</a> via 89.212.xx.xx dev t2-v24-ha proto bird</span></div>
<div style="margin:0px;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;background-color:rgb(171,205,239)"><span style="font-variant-ligatures:no-common-ligatures">..... </span></div>
</div>
<div><br>
</div>
</div>
<div><br>
</div>
<div><br>
</div>
<div>Regards,</div>
<div>saso<br>
<div><br>
<blockquote type="cite">
<div>On 8 Jul 2020, at 08:05, Mike Neo <<a href="mailto:neomikemac@gmail.com" target="_blank">neomikemac@gmail.com</a>>
wrote:</div>
<br>
<div>
<div dir="ltr">Hi,
<div><br>
</div>
<div>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><br>
</div>
<div>Regards,</div>
<div>Mike</div>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</blockquote>
<br>
</div>
</blockquote></div>