Grafana server 6.3 High Usage CPU

Hello,

I have my grafana server working fine since yesterday my grafana server use all the cpu.
One the process I see :

Perf top :
65.54% grafana-server [.] crypto/sha256.block

with a top :
image

I don’t know how to find what’s use akk the cpu how can I investigate.

Best regards

With a top ,