wu-sheng commented on issue #3281: The skywalking oap server cpu is too high to reach 100% URL: https://github.com/apache/skywalking/issues/3281#issuecomment-521968971 Try 6.3.0, it will reduce some payload to OAP. But to be honest, 4c simple node OAP for 40 node agents, looks like not powerful enough. SkyWalking does aggregations inside OAP by using internal stream computing core, it is not a simple collector to receive and save. Also, check your ES status, and our recommendations about ES bulk settings.
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