Memory leak in Anvil for high transaction volume

[AnieeG]

Component

Anvil

Have you ensured that all of these are up to date?

• Foundry
• Foundryup

What version of Foundry are you on?

forge 0.2.0 (503792a 2024-05-10T11:26:11.682258969Z)

What command(s) is the bug in?

anvil --chain-id 1337 --block-time 2 --gas-limit 400000000000000 --code-size-limit 30000 --base-fee 100000 --host 0.0.0.0 --port 8545 --accounts 20 --balance 2000000000000000000 --state /state/dump.json --state-interval 60 --transaction-block-keeper 500

Operating System

Linux

Describe the bug

While running Anvil as part of a load scenario, the memory usage of Anvil nodes increases very quickly. The load scenario generates one transaction every 5 seconds, and the blocktime of Anvil is set to 1 second. Within 30 minutes, the memory usage surges to 6 GiB. Using the --prune-history option effectively manages the memory usage, but it results in a BlockOutOfRangeError (BlockOutOfRangeError: block height is 501 but requested was 500) when querying deployed contracts.

Is there a workaround for this issue? Can Anvil be used for high load testing scenarios?

[grandizzy]

@AnieeG I don't see any mem leak using anvil 0.2.0 (260ad350c0 2024-05-27T10:56:35.953226014Z), the test I did was to run anvil

anvil --chain-id 1337 --block-time 1 --gas-limit 400000000000000 --code-size-limit 30000 --base-fee 100000 --host 0.0.0.0 --port 8545 --accounts 20 --balance 2000000000000000000 --state dump.json --state-interval 60 --transaction-block-keeper 500

and deploy Counter contract in a loop

while true; do forge create --private-key 0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80 src/Counter.sol:Counter; done

After 30 mins the resident memory reached 705M

then OS started to release it as expected, going down to 693M

Please retest with latest anvil and provide more details on how to reproduce if mem not released.

[AnieeG]

I have rerun this on latest tagged foundry version - forge 0.2.0 (0a5b22f 2024-05-21T10:30:02.156279959Z)
command used -

anvil --chain-id 90000034 --block-time 1 --gas-limit 400000000000000 --code-size-limit 30000 --base-fee 100000 --host 0.0.0.0 --port 8545 --accounts 20 --balance 2000000000000000000 --state /state/dump.json --state-interval 60 --transaction-block-keeper 500

Within 17m I see the usage is around 1.4GB

After 22m it shoots up to 2.0GB

But after 44m or so I see the usage has again gone down 808M

Thanks for fixing this!!

[grandizzy]

thanks, going to close per comment above