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A comment on Giving meaning to 100B analytics events a day with Kafka, Dataflow and BigQuery. Parent comment

Re:Giving meaning to 100B analytics events a day with Kafka,... by easytiger on Thursday April 19, 2018 @03:02AM (#16873912)
> In private data centers, it's difficult to get above 30% average efficiency.

What exactly does that mean?

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Re:Giving meaning to 100B analytics events a day with Kafka,... by nostalgiac on Thursday April 19, 2018 @04:30AM (#16874260)
Typically servers are only under a reasonable workload for load 30% of the day. Resulting in that hardware being unused (wasted) the other 70%.
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