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<p class="MsoNormal">Hi Dev Team,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am trying to setup 100K tunnels at 20 tunnels/sec.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">But as the number of tunnels established is increasing the kernel-netlink plugin performance is decreasing exponentially.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">What I mean by this is request and response for the kernel-netlink messages are taking more and more time as the number of established tunnels count, I have tried both with the parallel option enabled and disabled, see the observation for
both below.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">1. When parallel flag in kernel_netlink_ipsec.c is set to false, most of the threads are waiting for the lock to send netlink_messages to kernel. And the thread with lock is in sendto in kernel_netlink_shared.c (write_msg)<o:p></o:p></p>
<p class="MsoNormal">2. When parallel flag in kernel_netlink_ipsec.c is set to true, most of the thread are in condition_wait for the response to be received and processed. And the thread with lock is in sendto in kernel_netlink_shared.c (write_msg).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Note: Route installation is disabled.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We need help to determine the issue with the netlink performance, as we want to achieve 250 Tunnels per sec and 100K tunnels.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Vinay<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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