[Unity-idm-discuss] Long response time with remote IdP from Metadata source

[Sander A. <sa....@fz...>]

Good morning,

I recognised a longer response time if I browse to unity with remote
IdPs loaded from eduGain Metadata file. Last week I had some time to
investigate this "problem". Instance with eduGain IdPs has response
times between five and ten seconds.

I investigated the communication with network tools from browser. The
POST call, where the browser sends some client information, causes this
delay. Some further investigation with tcpdump and wireshark at server
site shows that there is only traffic between client (browser) and
server (unity). Unity sends some keepalive packages.

The long response time is on both instances with eduGain IdPs. There is
no delay on two instances without eduGain IdPs. But activating DFN IdPs
(loaded from metadata file) on one of them let increase the time for
POST method from 40ms to 400ms.

Are there some Options to speed up the server?

Best regards,
Sander
-- 
Federated Systems and Data
Juelich Supercomputing Centre

phone: +49 2461 61 8847
fax: +49 2461 61 6656
email: sa....@fz...

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