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deployment/alerts: make TooHighMemoryUsage more tolerable to spikes

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Using `min_over_time` should reduce the amount of false positives when
component is running in near-the-threshold state. Now it should trigger
only if all collected samples were above the threshold on 10m interval.

Signed-off-by: hagen1778 <roman@victoriametrics.com>
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hagen1778 2023-10-24 09:39:46 +02:00
parent 685f9c3c98
commit 003ef3a518
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2 changed files with 2 additions and 1 deletions
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2
deployment/docker/alerts-health.yml
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@ -35,7 +35,7 @@ groups:
Consider to increase the limit as fast as possible."
- alert: TooHighMemoryUsage
expr: (process_resident_memory_anon_bytes / vm_available_memory_bytes) > 0.8
expr: (min_over_time(process_resident_memory_anon_bytes[10m]) / vm_available_memory_bytes) > 0.8
for: 5m
labels:
severity: critical

1
docs/CHANGELOG.md
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@ -43,6 +43,7 @@ The sandbox cluster installation is running under the constant load generated by
* FEATURE: [vmbackup](https://docs.victoriametrics.com/vmbackup.html): add `-filestream.disableFadvise` command-line flag, which can be used for disabling `fadvise` syscall during backup upload to the remote storage. By default `vmbackup` uses `fadvise` syscall in order to prevent from eviction of recently accessed data from the [OS page cache](https://en.wikipedia.org/wiki/Page_cache) when backing up large files. Sometimes the `fadvise` syscall may take significant amounts of CPU when the backup is performed with large value of `-concurrency` command-line flag on systems with big number of CPU cores. In this case it is better to manually disable `fadvise` syscall by passing `-filestream.disableFadvise` command-line flag to `vmbackup`. See [this pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/5120) for details.
* FEATURE: [vmbackup](https://docs.victoriametrics.com/vmbackup.html): add `-deleteAllObjectVersions` command-line flag, which can be used for forcing removal of all object versions in remote object storage. See [this](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5121) issue and [these docs](https://docs.victoriametrics.com/vmbackup.html#permanent-deletion-of-objects-in-s3-compatible-storages) for the details.
* FEATURE: [Alerting rules for VictoriaMetrics](https://github.com/VictoriaMetrics/VictoriaMetrics/tree/master/deployment/docker#alerts): account for `vmauth` component for alerts `ServiceDown` and `TooManyRestarts`.
* FEATURE: [Alerting rules for VictoriaMetrics](https://github.com/VictoriaMetrics/VictoriaMetrics/tree/master/deployment/docker#alerts): make `TooHighMemoryUsage` more tolerable to spikes or near-the-threshold states. The change should reduce number of false positives.
* FEATURE: [vmui](https://docs.victoriametrics.com/#vmui): add support for functions, labels, values in autocomplete. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3006).
* FEATURE: [vmui](https://docs.victoriametrics.com/#vmui): retain specified time interval when executing a query from `Top Queries`. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5097).
* FEATURE: [vmui](https://docs.victoriametrics.com/#vmui): improve repeated VMUI page load times by enabling caching of static js and css at web browser side according to [these recommendations](https://developer.chrome.com/docs/lighthouse/performance/uses-long-cache-ttl/).