Performance Tricks

These instructions are designed to improve the performance of Erigon 3, particularly for synchronization and memory management, on cloud drives and other systems with specific performance characteristics.

Increase Sync Speed

• Increase download speed with flag --torrent.download.rate=[value] setting your max speed (default value is 128MB). For example:

--torrent.download.rate=512mb

Lock Latest State in RAM

• Use vmtouch -vdlw /mnt/erigon/snapshots/domain/*bt to lock the "latest state indices" in RAM, preventing it from being evicted due to high historical RPC traffic.

vmtouch -vdlw /mnt/erigon/snapshots/domain/*bt

• Or same for "whole latest sate": ls /mnt/erigon/snapshots/domain/*.kv | parallel vmtouch -vdlw

• If you encounter "cannot allocate memory" issues with above commands, then free memory by next command and re-try:

sync && sudo sysctl vm.drop_caches=3 && echo 1 > /proc/sys/vm/compact_memory

Optimize for Cloud Drives

• Cloud Drives (gp3, pd-ssd) have good throughput but bad latency. So, we don't recommend them to Erigon. But still can set SNAPSHOT_MADV_RND=false to enable the operating system's cache prefetching - but it will lead to huge IO if RAM is small.

SNAPSHOT_MADV_RND=false