a customer is running a synchronous scenario ABAP proxy to SOAP webservice using SAP PI 7.11.
At the moment the scenario is setup as classical scenario (dual stack).
The processing of single message tooks around 30+ seconds.
Looking at the performance monitoring as well as the HTTP_SEND step takes most of the time 30 seconds.
The webservice is called via HTTPS (SSL certificate is used).
Looking at the audit log the step taking the most time is "SOAP: request message entering the adapter with user J2EE_GUEST"
At the moment I am not sure which component of this interface is the reason for this long processing time, either PI or the receiver webservice which is called using SOAP adapter.
I suppose it should be the webservice, but would appreciate if someone could share his/her thoughts on that, before getting in touch with supplier of the webservice.
Redesign the interface using ICO (java-only) is for sure an option, but I would focus on the understanding of the issue first.
I appreciate your help.
Thanks in advance.