perf(opentsdb): 数据拉取以ident分发,并把list方式改为chan方式,提高消费效率。 #906
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起因:我们遇到了多个几千个收集的targets,使得n9e发送到prometheus的效果不是很好。
想法:由于每个采集点都有一个ident,这样n9e处理的有些慢。
改造:默认提取ident,每个ident都有一个chan进行分发处理,提升消费效率。