Created question in FIWARE Q/A platform on 17-12-2018 at 16:12
Please, ANSWER this question AT https://stackoverflow.com/questions/53818381/how-can-i-improve-socket-hang-up-when-connecting-many-devices

Question:
How can I improve socket hang up when connecting many devices?

Description:

I am testing to connect many devices to FIWARE in the following environment.
Each component is deployed in a container on a physical server.

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Under the condition that each device transmits data at 1 msg/sec, the following error occurs at IoTAgent when the number of devices is 350.(That is, 350 msg/sec)

{"log":"time=2018-12-16T14:57:24.810Z | lvl=ERROR | corr=ec11c37f-5194-4cb3-8d79-e04a2d1e745c | trans=ec11c37f-5194-4cb3-8d79-e04a2d1e745c | op=IoTAgentNGSI.Alarms | srv=n/a | subsrv=n/a | msg=Raising [ORION-ALARM]:

| comp=IoTAgent\n","stream":"stdout","time":"2018-12-16T14:57:24.810440213Z"}

Question 1: Where is the cause? IoTAgent? Or Orion?

Error found executing update action in Context Broker: Error: socket hang up but there is no error log displayed in Orion.

Question 2: How can I improve the processing performance of FIWARE?

Do you need the scale of IoTAgent?
Do you need to consider Orion's parameters?

I need to consider values ​​such as reqPoolSize and maxConnections with reference to the following URL?
https://fiware-orion.readthedocs.io/en/master/admin/perf_tuning/#http-server-tuning

Do you need the scale of Orion?

How to scale Orion GE?

Question 3: Is there a batch operation on IoT Agent?

On the following page, you should do a batch operation instead of opening a new connection for each entity, but is there such a function in IoTAgent?
ECONNRESET when opening a large number of connection in small time period