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Vika 2024-01-30 16:47:26 +00:00
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vmagent.md

@ -771,12 +771,13 @@ e.g. it sets `scrape_series_added` metric to zero. See [these docs](#automatical
## Stream parsing mode
By default, `vmagent` reads the full response body from scrape target into memory, then parses it, applies [relabeling](#relabeling)
and then pushes the resulting metrics to the configured `-remoteWrite.url`. This mode works good for the majority of cases
when the scrape target exposes small number of metrics (e.g. less than 10 thousand). But this mode may take big amounts of memory
when the scrape target exposes big number of metrics. In this case it is recommended enabling stream parsing mode.
When this mode is enabled, then `vmagent` reads response from scrape target in chunks, then immediately processes every chunk
and pushes the processed metrics to remote storage. This allows saving memory when scraping targets that expose millions of metrics.
By default, `vmagent` parses the full response from the scrape target, applies [relabeling](#relabeling)
and then pushes the resulting metrics to the configured `-remoteWrite.url` in one go. This mode works good for the majority of cases
when the scrape target exposes small number of metrics (e.g. less than 10K). But this mode may take big amounts of memory
when the scrape target exposes big number of metrics (for example, when `vmagent` scrapes [`kube-state-metrics`](https://github.com/kubernetes/kube-state-metrics)
in large Kubernetes cluster). It is recommended enabling stream parsing mode for such targets.
When this mode is enabled, `vmagent` processes the response from the scrape target in chunks.
This allows saving memory when scraping targets that expose millions of metrics.
Stream parsing mode is automatically enabled for scrape targets returning response bodies with sizes bigger than
the `-promscrape.minResponseSizeForStreamParse` command-line flag value. Additionally,