From c21c3b0befeb46a51b6bf3758ffa30813bea0ff0 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 9 Mar 2024 14:19:22 +0100 Subject: Adding upstream version 1.44.3. Signed-off-by: Daniel Baumann --- .../dbengine/10min_dbengine_global_flushing_errors.md | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 health/guides/dbengine/10min_dbengine_global_flushing_errors.md (limited to 'health/guides/dbengine/10min_dbengine_global_flushing_errors.md') diff --git a/health/guides/dbengine/10min_dbengine_global_flushing_errors.md b/health/guides/dbengine/10min_dbengine_global_flushing_errors.md new file mode 100644 index 000000000..4e388eb28 --- /dev/null +++ b/health/guides/dbengine/10min_dbengine_global_flushing_errors.md @@ -0,0 +1,13 @@ +### Understand the alert + +The Database Engine works like a traditional database. It dedicates a certain amount of RAM to data caching and indexing, while the rest of the data resides compressed on disk. Unlike other memory modes, the amount of historical metrics stored is based on the amount of disk space you allocate and the effective compression ratio, not a fixed number of metrics collected. + +By using both RAM and disk space, the database engine allows for long-term storage of per-second metrics inside of the Netdata Agent itself. + +Netdata monitors the number of pages deleted due to failure to flush data to disk in the last 10 minutes. In this situation some metric data was dropped to unblock data collection. To remedy this issue, reduce disk load or use +faster disks. This alert is triggered in critical state when the number deleted pages is greater than 0. + +### Useful resources + +[Read more about Netdata DB engine](https://learn.netdata.cloud/docs/agent/database/engine) + -- cgit v1.2.3