Error: Concurrent server side render limit reached

Hi,

im trying to get round about 80 png images via grafana render API. The requests are send nearly simultaneous. 20 to 30 images are rendered with the Error “Concurrent server side render limit reached”. The other images are fine.

I also set the parameter: “concurrent_render_limit = 999” but without any affect. I suppose its only for alerting.

Is there any other limit?

My Grafana Version:
5.4.2

OS:
Debian Jessie 64bit

Datasources:
graphite and postgresql

Error Image (maybe put this base64 to your Browser Address bar):
data:image/png;base64,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

best regards
Julian

the Problem is issued in a server side hard coded Limit…


render.go: ConcurrentLimit: 30

best regards
Julian