[Bamboo-Users] How to change Get timeout

[Olaf Görlitz]

Hi Martina,

In the past, I had the impression that those parameters in the config
file have no real effect. Actually, the timeout parameter is hard-coded
in the ONCRPC library. (http://remotetea.sourceforge.net/)

see also:
http://bamboo-dht.org/pipermail/bamboo-users/2006-August/000826.html

I'm not quite sure if this solves your problem.

Cheers,
Olaf


On 04.12.2007 07:33, Martina.Baldanzi at isti.cnr.it wrote:
> Dear Haijun,
> thanks a lot for your reply, but probably I didn't explain clearly my
> problem.
> Now, I'm testing Bamboo simulating an unreliable overlay network, in
> particular I'm studying the behaviour of the DHT in respect with the
> increase/decrease of the get timeout.
> 
> My problem is: why I obtain get response times multiples of 5000 ms when 
> I have set the get_timeout var in config file equal to 800 ms?
> 
> Thank you very much,
> Martina
> 
> 2007/12/3, Haijun Cao <Haijun at projectrialto.com>:
> 
>     Set drop_prob to 0.0 in network stage.
> 
>     -----Original Message-----
>     From: bamboo-users-bounces at bamboo-dht.org
>     [mailto:bamboo-users-bounces at bamboo-dht.org] On Behalf Of
>     Martina.Baldanzi at isti.cnr.it
>     Sent: Monday, December 03, 2007 9:23 AM
>     To: bamboo-users at bamboo-dht.org
>     Cc: martina.baldanzi at isti.cnr.it
>     Subject: [Bamboo-Users] How to change Get timeout
> 
>     Dear All,
>     I'm Martina and I have a question about the get timeout.
>     As default value, the get_timeout variable is set to 5000 ms, but if I
>     change the config file of a Bamboo node, I can give a different value
> to
>     this timeout (such as 800 ms).
> 
>     Suppose that I want to change the get_timeout of
>     bamboo/test/location-test-node.cfg in this way:
> 
>     ...
> 
>     <Dht>
>                 class bamboo.dht.Dht
>                 <initargs>
>                     get_timeout 800
>                     debug_level 1
>                     storage_manager_stage StorageManager
>                     min_replica_count     1
>                 </initargs>
>             </Dht>
> 
>     ..
> 
>     Now I run the test to start two Bamboo instances and I run a sequence
> of
>     Get requests to measure the response time. Sometimes, I obtain get
>     resolved in tens of milliseconds and sometimes I obtain get resolved
>     with a time equal to 5000 ms.
> 
>     This is ok for me, because the network is reliable at the 90%, but I
>     expected get response time multiple of 800 ms.
> 
>     Moreover, I have tried to change the line 1075 of
>     bamboo/src/bamboo/dht/Dht.java with the following:
> 
>     get_timeout = configGetInt(config, "get_timeout", 800);
> 
>     and then I re-compile the bamboo source code, but I obtain get
> response
>     time multiple of 5000 ms.
> 
>     Any ideas to resolve my problem?
>     Thank you very much,
>     Martina
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-- 
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Olaf Görlitz                                   goerlitz at uni-koblenz.de
University of Koblenz                          tel:   +49 261 287-2617
Institute for Computer Science                 fax:   +49 261 287-2721
Information Systems and Semantic Web           isweb.uni-koblenz.de
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