From 3199558da921bbb50dc3691f4a4dee2b25247e17 Mon Sep 17 00:00:00 2001
From: Aliaksandr Valialkin <valyala@victoriametrics.com>
Date: Tue, 23 Jan 2024 17:44:05 +0200
Subject: [PATCH] lib/{storage,mergeset}: reduce the maxium compression level
for the stored data
This reduces CPU usage a bit, while doesn't increase resulting file sizes according to synthetic tests.
---
lib/mergeset/table.go | 5 +----
lib/storage/partition.go | 8 +-------
2 files changed, 2 insertions(+), 11 deletions(-)
diff --git a/lib/mergeset/table.go b/lib/mergeset/table.go
index 6cf6696151..ab82d123c5 100644
--- a/lib/mergeset/table.go
+++ b/lib/mergeset/table.go
@@ -1323,10 +1323,7 @@ func getCompressLevel(itemsCount uint64) int {
if itemsCount <= 1<<25 {
return 2
}
- if itemsCount <= 1<<28 {
- return 3
- }
- return 4
+ return 3
}
func (tb *Table) nextMergeIdx() uint64 {
diff --git a/lib/storage/partition.go b/lib/storage/partition.go
index acec2bb188..8861a0afaa 100644
--- a/lib/storage/partition.go
+++ b/lib/storage/partition.go
@@ -1542,13 +1542,7 @@ func getCompressLevel(rowsPerBlock float64) int {
if rowsPerBlock <= 1000 {
return 2
}
- if rowsPerBlock <= 2000 {
- return 3
- }
- if rowsPerBlock <= 4000 {
- return 4
- }
- return 5
+ return 3
}
func (pt *partition) nextMergeIdx() uint64 {