comparison of different CA clients: caproto and pyepics

[Valentyn Stadnytskyi via Tech-talk <tech-talk@aps.anl.gov>]

Hello,

I have been working on writing server and clients using caproto and pyepics libraries. I have a simple server written with caproto that has only one PV, '.image’. I can get the image with pyepics or caproto clients. It seems that pyepics client is 2 times slower than caproto. Does anyone know why caproto is faster than pyepics? Is it because the server is written in caproto?

The server code: https://github.com/vstadnytskyi/caproto-sandbox/blob/master/caproto_sandbox/io_camera_server.py

The client code: https://github.com/vstadnytskyi/caproto-sandbox/blob/master/caproto_sandbox/io_camera_client.py

Server is running on the same machine. The image size is 1,3960,3960

Results:

One request:

pyepics client: 2.068

caproto client: 0.856

Average of 10:

pyepics client: 1.203

caproto client: 0.628

Regards, 

Valentyn

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Valentyn Stadnytskyi

v.stadnytskyi@gmail.com