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config parsers ()

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* added parser for durations

* preliminary work for timeframes

* Update CMakeLists.txt

* updated parsing and generation for durations

* renames

* report parser errors; added compatibility to existing config_parse_duration()

* duration parsing is used on most netdata.conf and stream.conf entries

* more uses of duration parsing; simplification of stream.conf

* code cleanup

* more duration changes

* added html playground

* improved js code

* duration parsing applied to dbengine retention

* fixed doc

* simplified logic; added size parser

* added parsing for sizes

* renames and documentation updates

* hide appconfig internals from the rest of netdata

* fix crash on cleanup of streaming receivers

* fix buffer overflow in gorilla compression

* config return values are const

* ksm set to auto

* support reformatting migrated values

* removed obsolete metrics correlations settings

* split appconfig to multiple files

* durations documentation

* sizes documentation

* added backward compatibility in retention configuration

* provide description on migrations and reformattings

* config options are now a double linked list

* config sections are now a double linked list; config uses spinlocks; code cleanup and renames

* added data type to all config options

* update data types

* split appconfig api to multiple files

* code cleanup and renames

* removed size units above PiB

* Revert "fix buffer overflow in gorilla compression"

This reverts commit 3d5c48e84b.

* appconfig internal api changes
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Costa Tsaousis 2024-09-04 14:42:01 +03:00 • committed by GitHub
parent d8c5109a00
commit a399128dbf
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155 changed files with 3489 additions and 1944 deletions
docs/netdata-agent/sizing-netdata-agents
ram-requirements.md

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docs/netdata-agent/sizing-netdata-agents/ram-requirements.md
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@ -34,8 +34,8 @@ about 16 GiB
There are 2 cache sizes that can be configured in `netdata.conf`:
1. `[db].dbengine page cache size MB`: this is the main cache that keeps metrics data into memory. When data are not found in it, the extent cache is consulted, and if not found in that either, they are loaded from disk.
2. `[db].dbengine extent cache size MB`: this is the compressed extent cache. It keeps in memory compressed data blocks, as they appear on disk, to avoid reading them again. Data found in the extend cache but not in the main cache have to be uncompressed to be queried.
1. `[db].dbengine page cache size`: this is the main cache that keeps metrics data into memory. When data are not found in it, the extent cache is consulted, and if not found in that either, they are loaded from disk.
2. `[db].dbengine extent cache size`: this is the compressed extent cache. It keeps in memory compressed data blocks, as they appear on disk, to avoid reading them again. Data found in the extend cache but not in the main cache have to be uncompressed to be queried.
Both of them are dynamically adjusted to use some of the total memory computed above. The configuration in `netdata.conf` allows providing additional memory to them, increasing their caching efficiency.