[hobbit] ping test is too slow

[Ryan Novosielski]

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Do not thread hijack.

thorsten.erdmann at daimler.com wrote:
> 
> Hi
> 
> for some time I am having problems with out ping test of hobbit. It runs
> longer that the time intervall. Is it possible to speed up the test? I
> don't want to make the intervall longer.
> I am using the hobbitping. I tried doubling --max_pps from 50 to 100
> with no effect.
> 
> Most of the time the DNS-lookup eats up 20 seconds, but sometimes it is
> near zero! Why that? Most of my monitored system have a testip tag, so
> should not do any DNS lookup at all. But some WLAN accesspoints which
> are configured for using DHCP does not have the testip tag.
> 
> In the manpage of hobbitping I read something about a runtime of 18
> seconds for 1000 clients. Why it is so slow on my machine? It's a fast
> machine, Opteron with 1GBit network interface.
> 
> Here ist the output of bbtest:
> 
> bbtest-net version 4.2.0
> SSL library : OpenSSL 0.9.7a Feb 19 2003
> LDAP library: OpenLDAP 20213
> 
> Statistics:
>  Hosts total           :      834
>  Hosts with no tests   :       20
>  Total test count      :      819
>  Status messages       :      820
>  Alert status msgs     :        0
>  Transmissions         :       10
> 
> DNS statistics:
>  # hostnames resolved  :      288
>  # succesful           :      288
>  # failed              :        0
>  # calls to dnsresolve :      290
> 
> TCP test statistics:
>  # TCP tests total     :        3
>  # HTTP tests          :        2
>  # Simple TCP tests    :        1
>  # Connection attempts :        3
>  # bytes written       :      261
>  # bytes read          :     1467
> 
> 
> Error output:
> WARNING: Runtime 68 longer than time limit (60)
> 
> 
> TIME SPENT
> Event                                            Starttime          Duration
> bbtest-net startup                       1276505088.377616                 -
> Service definitions loaded               1276505088.380818        
>  0.003202
> Tests loaded                             1276505088.417419        
>  0.036601
> DNS lookups completed                    1276505108.462455        
> 20.045036 <<<----
> Test engine setup completed              1276505108.479249        
>  0.016794
> TCP tests completed                      1276505108.482081        
>  0.002832
> PING test completed (814 hosts)          1276505156.193513        
> 47.711432 <<<----
> PING test results sent                   1276505156.334798        
>  0.141285
> Test result collection completed         1276505156.334808        
>  0.000010
> LDAP test engine setup completed         1276505156.334809        
>  0.000001
> LDAP tests executed                      1276505156.334819        
>  0.000010
> LDAP tests result collection completed   1276505156.334820        
>  0.000001
> NSLOOKUP tests executed                  1276505156.339081        
>  0.004261
> Test results transmitted                 1276505156.473376        
>  0.134295
> bbtest-net completed                     1276505156.475145        
>  0.001769
> TIME TOTAL                                                        
> 68.097529
> 
> 
> Thorsten Erdmann
> 
> If you are not the intended addressee, please inform us immediately that
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> your cooperation.
> 


- --
- ---- _  _ _  _ ___  _  _  _
|Y#| |  | |\/| |  \ |\ |  | |Ryan Novosielski - Sr. Systems Programmer
|$&| |__| |  | |__/ | \| _| |novosirj at umdnj.edu - 973/972.0922 (2-0922)
\__/ Univ. of Med. and Dent.|IST/CST-Academic Svcs. - ADMC 450, Newark
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