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ethdb/pebble: adjust the number of memory tables

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Gary Rong 2025-06-05 12:46:59 +08:00
parent 23f07d8c93
commit 3c41c1829c
1 changed files with 6 additions and 3 deletions
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9
ethdb/pebble/pebble.go
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@ -199,9 +199,12 @@ func New(file string, cache int, handles int, namespace string, readonly bool) (
// Taken from https://github.com/cockroachdb/pebble/blob/master/internal/constants/constants.go // Taken from https://github.com/cockroachdb/pebble/blob/master/internal/constants/constants.go
maxMemTableSize := (1<<31)<<(^uint(0)>>63) - 1 maxMemTableSize := (1<<31)<<(^uint(0)>>63) - 1
// Two memory tables is configured which is identical to leveldb, // Four memory tables are configured, each with a default size of 256 MB.
// including a frozen memory table and another live one. // Having multiple smaller memory tables while keeping the total memory
memTableLimit := 2 // limit unchanged allows writes to be flushed more smoothly. This helps
// avoid compaction spikes and mitigates write stalls caused by heavy
// compaction workloads.
memTableLimit := 4
memTableSize := cache * 1024 * 1024 / 2 / memTableLimit memTableSize := cache * 1024 * 1024 / 2 / memTableLimit
// The memory table size is currently capped at maxMemTableSize-1 due to a // The memory table size is currently capped at maxMemTableSize-1 due to a