<div dir="ltr"><span style="font-size:12.8px">Hi, thanks for you fast reply,</span><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">but  i think that <span style="font-size:12.8px">setMaxUDPOutstanding relates to queries pending from backend servers to dnsdist.</span></div><div style="font-size:12.8px"><span style="font-size:12.8px">My tests are almost all serviced from cache.</span></div><div class="gmail-yj6qo gmail-ajU" style="margin:2px 0px 0px;font-size:12.8px"><div id="gmail-:42m" class="gmail-ajR" tabindex="0"><img class="gmail-ajT" src="https://ssl.gstatic.com/ui/v1/icons/mail/images/cleardot.gif" style="opacity: 0.3;"></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Apr 3, 2017 at 4:42 PM, Aleš Rygl <span dir="ltr"><<a href="mailto:ales@rygl.net" target="_blank">ales@rygl.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class=""><br>
> We can't get more than 120/150 kqps<br>
> We don't think it's network related, and doesn't seem to be interface or<br>
> udp stack.<br>
<br>
</span>Hi,<br>
<br>
I was struggling with some packet loss some time ago. There was a packet loss<br>
in the output of netstat -su command.<br>
<br>
Finally I was advised to increase to use setMaxUDPOutstanding(65535) which<br>
worked as a magic.<br>
<br>
BR<br>
<br>
Ales<br>
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</blockquote></div><br></div>