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- Core
- Debugging of Checkmk helpers
High Fetcher Usage although fetcher helper count is already high
If you face the problem, that Fetcher helper usage is permanently above 96% and Fetcher count is already high (i.e. >50 or 100) then this is a strong indicator that you might have plugins/local checks (primarily in Windows) that have a quite a long runtime.
Increasing the fetcher helper here is not constructive. Instead you have to identify the long running plugins/local checks and set them to async async and define a (generous) cache settings or even timeouts especially for them.
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