cmd/pebble: enable blob file rewriting

jbowens · jbowens · commit a2947b4a9383 · 2025-07-01T13:56:47.000-04:00
Adjust the TargetGarbageRatio setting to enable blob file rewrites. This
effectively enables blob file rewrite compactions in the ycsb nightly
benchmarks that make use of value separation.
diff --git a/cmd/pebble/db.go b/cmd/pebble/db.go
@@ -88,8 +88,7 @@ func newPebbleDB(dir string) DB {
 			MinimumSize:           512,
 			MaxBlobReferenceDepth: 10,
 			RewriteMinimumAge:     5 * time.Minute,
-			// TODO(jackson): Adjust the TargetGarbageRatio to allow blob file rewrites.
-			TargetGarbageRatio: 1.0, // Disabled.
+			TargetGarbageRatio:    0.1,
 		}
 	}
 

Original file line number	Diff line number	Diff line change
`@@ -88,8 +88,7 @@ func newPebbleDB(dir string) DB {`
`88`	`88`	`MinimumSize: 512,`
`89`	`89`	`MaxBlobReferenceDepth: 10,`
`90`	`90`	`RewriteMinimumAge: 5 * time.Minute,`
`91`		`- // TODO(jackson): Adjust the TargetGarbageRatio to allow blob file rewrites.`
`92`		`- TargetGarbageRatio: 1.0, // Disabled.`
	`91`	`+ TargetGarbageRatio: 0.1,`
`93`	`92`	`}`
`94`	`93`	`}`
`95`	`94`