<div dir="ltr">Dears,<div><br></div><div>Probably this the thousand time you get these question. but our bind server have slow response time for the non-cached entries.</div><div><br></div><div>I have run dig with +trace option and below is the result</div>
<div><br></div><div><div>; <<>> DiG 9.8.0-P2 <<>> @<a href="http://127.0.0.1">127.0.0.1</a> <a href="http://www.google.com">www.google.com</a> +trace</div><div>; (1 server found)</div><div>;; global options: +cmd</div>
<div>.<span class="Apple-tab-span" style="white-space:pre"> </span>2013<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://i.root-servers.net">i.root-servers.net</a>.</div>
<div>.<span class="Apple-tab-span" style="white-space:pre"> </span>2013<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://g.root-servers.net">g.root-servers.net</a>.</div>
<div>.<span class="Apple-tab-span" style="white-space:pre"> </span>2013<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://l.root-servers.net">l.root-servers.net</a>.</div>
<div>.<span class="Apple-tab-span" style="white-space:pre"> </span>2013<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://m.root-servers.net">m.root-servers.net</a>.</div>
<div>.<span class="Apple-tab-span" style="white-space:pre"> </span>2013<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://d.root-servers.net">d.root-servers.net</a>.</div>
<div>.<span class="Apple-tab-span" style="white-space:pre"> </span>2013<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://b.root-servers.net">b.root-servers.net</a>.</div>
<div>.<span class="Apple-tab-span" style="white-space:pre"> </span>2013<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://k.root-servers.net">k.root-servers.net</a>.</div>
<div>.<span class="Apple-tab-span" style="white-space:pre"> </span>2013<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://j.root-servers.net">j.root-servers.net</a>.</div>
<div>.<span class="Apple-tab-span" style="white-space:pre"> </span>2013<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://c.root-servers.net">c.root-servers.net</a>.</div>
<div>.<span class="Apple-tab-span" style="white-space:pre"> </span>2013<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://a.root-servers.net">a.root-servers.net</a>.</div>
<div>.<span class="Apple-tab-span" style="white-space:pre"> </span>2013<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://h.root-servers.net">h.root-servers.net</a>.</div>
<div>.<span class="Apple-tab-span" style="white-space:pre"> </span>2013<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://e.root-servers.net">e.root-servers.net</a>.</div>
<div>.<span class="Apple-tab-span" style="white-space:pre"> </span>2013<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://f.root-servers.net">f.root-servers.net</a>.</div>
<div>;; Received 228 bytes from 127.0.0.1#53(127.0.0.1) in 1 ms</div><div><br></div><div>com.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://a.gtld-servers.net">a.gtld-servers.net</a>.</div>
<div>com.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://b.gtld-servers.net">b.gtld-servers.net</a>.</div>
<div>com.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://c.gtld-servers.net">c.gtld-servers.net</a>.</div>
<div>com.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://d.gtld-servers.net">d.gtld-servers.net</a>.</div>
<div>com.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://e.gtld-servers.net">e.gtld-servers.net</a>.</div>
<div>com.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://f.gtld-servers.net">f.gtld-servers.net</a>.</div>
<div>com.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://g.gtld-servers.net">g.gtld-servers.net</a>.</div>
<div>com.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://h.gtld-servers.net">h.gtld-servers.net</a>.</div>
<div>com.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://i.gtld-servers.net">i.gtld-servers.net</a>.</div>
<div>com.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://j.gtld-servers.net">j.gtld-servers.net</a>.</div>
<div>com.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://k.gtld-servers.net">k.gtld-servers.net</a>.</div>
<div>com.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://l.gtld-servers.net">l.gtld-servers.net</a>.</div>
<div>com.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://m.gtld-servers.net">m.gtld-servers.net</a>.</div>
<div>;; Received 492 bytes from 199.7.83.42#53(<a href="http://l.root-servers.net">l.root-servers.net</a>) in 175 ms</div><div><br></div><div><a href="http://google.com">google.com</a>.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://ns2.google.com">ns2.google.com</a>.</div>
<div><a href="http://google.com">google.com</a>.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://ns1.google.com">ns1.google.com</a>.</div>
<div><a href="http://google.com">google.com</a>.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://ns3.google.com">ns3.google.com</a>.</div>
<div><a href="http://google.com">google.com</a>.<span class="Apple-tab-span" style="white-space:pre"> </span>172800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>NS<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://ns4.google.com">ns4.google.com</a>.</div>
<div>;; Received 168 bytes from 192.5.6.30#53(<a href="http://a.gtld-servers.net">a.gtld-servers.net</a>) in 250 ms</div><div><br></div><div><a href="http://www.google.com">www.google.com</a>.<span class="Apple-tab-span" style="white-space:pre"> </span>604800<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>CNAME<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://www.l.google.com">www.l.google.com</a>.</div>
<div><a href="http://www.l.google.com">www.l.google.com</a>.<span class="Apple-tab-span" style="white-space:pre"> </span>300<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>A<span class="Apple-tab-span" style="white-space:pre"> </span>209.85.148.106</div>
<div><a href="http://www.l.google.com">www.l.google.com</a>.<span class="Apple-tab-span" style="white-space:pre"> </span>300<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>A<span class="Apple-tab-span" style="white-space:pre"> </span>209.85.148.104</div>
<div><a href="http://www.l.google.com">www.l.google.com</a>.<span class="Apple-tab-span" style="white-space:pre"> </span>300<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>A<span class="Apple-tab-span" style="white-space:pre"> </span>209.85.148.147</div>
<div><a href="http://www.l.google.com">www.l.google.com</a>.<span class="Apple-tab-span" style="white-space:pre"> </span>300<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>A<span class="Apple-tab-span" style="white-space:pre"> </span>209.85.148.99</div>
<div><a href="http://www.l.google.com">www.l.google.com</a>.<span class="Apple-tab-span" style="white-space:pre"> </span>300<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>A<span class="Apple-tab-span" style="white-space:pre"> </span>209.85.148.103</div>
<div><a href="http://www.l.google.com">www.l.google.com</a>.<span class="Apple-tab-span" style="white-space:pre"> </span>300<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>A<span class="Apple-tab-span" style="white-space:pre"> </span>209.85.148.105</div>
<div>;; Received 148 bytes from 216.239.34.10#53(<a href="http://ns2.google.com">ns2.google.com</a>) in 225 ms</div></div><div><br></div><div><br></div><div><br></div><div>we are running bind version "BIND 9.8.0-P2" on CentOS release 5.6 (Final)</div>
<div><br></div><div>the process is running as mutlithreaded and consuming total of 60% of cpu utilization. </div><div><br></div><div>do we have network issue or performance bottleneck.</div><div><br></div><div>engtmk
</div></div>