<br><font size=2 face="sans-serif">Hi</font><br><br><font size=2 face="sans-serif">I am running hobbit against 40 clients.
Two of these clients are our DNS servers. Only on these two clients I have
enabled the DNS test by adding the DNS keyword to their bb-hosts line.
I wanted to check the function of the DNS servers</font><br><br><font size=2 face="sans-serif">If I look at the statistics of bbtest
it looks like this:</font><br><br><font size=2><tt>Fri Sep 12 15:26:08 2008</tt></font><br><br><font size=2><tt>bbtest-net version 4.2.0</tt></font><br><font size=2><tt>SSL library : OpenSSL 0.9.7a Feb 19 2003</tt></font><br><font size=2><tt>LDAP library: OpenLDAP 20213</tt></font><br><br><font size=2><tt>Statistics:</tt></font><br><font size=2><tt> Hosts total
: 41</tt></font><br><font size=2><tt> Hosts with no tests :
1</tt></font><br><font size=2><tt> Total test count :
44</tt></font><br><font size=2><tt> Status messages :
45</tt></font><br><font size=2><tt> Alert status msgs :
0</tt></font><br><font size=2><tt> Transmissions :
2</tt></font><br><br><font size=2><tt>DNS statistics:</tt></font><br><font size=2><tt> # hostnames resolved :
40</tt></font><br><font size=2><tt> # succesful
: 40</tt></font><br><font size=2><tt> # failed
: 0</tt></font><br><font size=2><tt> # calls to dnsresolve :
44</tt></font><br><br><font size=2><tt>TCP test statistics:</tt></font><br><font size=2><tt> # TCP tests total :
2</tt></font><br><font size=2><tt> # HTTP tests :
1</tt></font><br><font size=2><tt> # Simple TCP tests :
1</tt></font><br><font size=2><tt> # Connection attempts :
2</tt></font><br><font size=2><tt> # bytes written :
126</tt></font><br><font size=2><tt> # bytes read :
871</tt></font><br><br><br><font size=2><tt>TIME SPENT</tt></font><br><font size=2><tt>Event
Starttime Duration</tt></font><br><font size=2><tt>bbtest-net startup
1221225968.275331
-</tt></font><br><font size=2><tt>Service definitions loaded
1221225968.276931 0.001600
</tt></font><br><font size=2><tt>Tests loaded
1221225968.281365
0.004434 </tt></font><br><font size=2><tt>DNS lookups completed
1221225973.283037
5.001672 </tt></font><br><font size=2><tt>Test engine setup completed
1221225973.285332 0.002295
</tt></font><br><font size=2><tt>TCP tests completed
1221225973.286398
0.001066 </tt></font><br><font size=2><tt>PING test completed (40 hosts)
1221225974.166549 0.880151
</tt></font><br><font size=2><tt>PING test results sent
1221225974.177932
0.011383 </tt></font><br><font size=2><tt>Test result collection completed
1221225974.177943 0.000011 </tt></font><br><font size=2><tt>LDAP test engine setup completed
1221225974.177944 0.000001 </tt></font><br><font size=2><tt>LDAP tests executed
1221225974.177945
0.000001 </tt></font><br><font size=2><tt>LDAP tests result collection completed 1221225974.177946
0.000001 </tt></font><br><font size=2><tt>NSLOOKUP tests executed
1221225974.179452
0.001506 </tt></font><br><font size=2><tt>Test results transmitted
1221225974.181039
0.001587 </tt></font><br><font size=2><tt>bbtest-net completed
1221225974.182936
0.001897 </tt></font><br><font size=2><tt>TIME TOTAL
5.907605 </tt></font><br><br><br><font size=2 face="sans-serif">What you see are two mystic things:</font><br><br><font size=2 face="sans-serif">It seems that hobbit resolves all clients
via DNS: </font><font size=2><tt> </tt></font><br><font size=2><tt> # hostnames resolved :
40</tt></font><br><font size=2 face="sans-serif">Why that, I gave all names and it's
corresponding IPs at the bb-hosts file?</font><br><br><font size=2 face="sans-serif">The DNS test runs about 5 seconds for
only these 40 clients, maybe that is because of the first issue: </font><br><font size=2><tt> DNS lookups completed
1221225973.283037
5.001672</tt></font><br><br><font size=2 face="sans-serif">If you look at the graph, it gives very
scary "triagle curves". I've put a screenshot here: http://www.trektech.de/test/hobbitgraph.png</font><br><font size=2 face="sans-serif">The thing seems to have started when
I put the DNS keyword to my two DNS servers. Before it gave a nearly zero
line.</font><br><br><font size=2 face="sans-serif">I want to add about 400 network switches
which should only do a ping test and I fear that this would extremely increase
the runtime of the bbtest.</font><br><font size=2 face="sans-serif">What can I do to decrease the runtime?</font><br><br><font size=2 face="sans-serif">Thorsten Erdmann<br>ITI/EP68<br>Mercedes Benz Werk Hamburg<br>Tel.: +49-40-7920-2593<br><br></font><font face="sans-serif"><font face="sans-serif, Arial, Helvetica" size="-1" color="#808080"><br>If you are not the intended addressee, please inform us immediately that you have received this e-mail in error, and delete it. We thank you for your cooperation.
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