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feat(pageserver): add automatic trigger for gc-compaction (#10798)

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## Problem

part of https://github.com/neondatabase/neon/issues/9114

## Summary of changes

Add the auto trigger for gc-compaction. It computes two values: L1 size
and L2 size. When L1 size >= initial trigger threshold, we will trigger
an initial gc-compaction. When l1_size / l2_size >=
gc_compaction_ratio_percent, we will trigger the "tiered" gc-compaction.

---------

Signed-off-by: Alex Chi Z <chi@neon.tech>
This commit is contained in:
Alex Chi Z.
2025-02-25 09:50:39 -05:00
committed by GitHub
parent b7fcf2c7a7
commit 015092d259
11 changed files with 446 additions and 71 deletions
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2
libs/pageserver_api/src/config.rs
View File

@@ -584,7 +584,7 @@ pub mod tenant_conf_defaults {
// image layers should be created.
pub const DEFAULT_IMAGE_LAYER_CREATION_CHECK_THRESHOLD: u8 = 2;
pub const DEFAULT_GC_COMPACTION_ENABLED: bool = false;
pub const DEFAULT_GC_COMPACTION_INITIAL_THRESHOLD_KB: u64 = 10240000;
pub const DEFAULT_GC_COMPACTION_INITIAL_THRESHOLD_KB: u64 = 5 * 1024 * 1024; // 5GB
pub const DEFAULT_GC_COMPACTION_RATIO_PERCENT: u64 = 100;
}