*High* CPU usage with local bitcoind

[darosior]

Description

Bisq with local bitcoind consumes around 100-120% of CPU (top return), while it consumes 10 to 15% with a remote bitcoind (federation's ones if I don't make a mistake ?).

Version

v1.2.3 but all prior were also affected.

Steps to reproduce

Just try running Bisq with a local bitcoind.

[darosior]

Ok, even better since v1.2.3 I don't have any Bitcoin network peers using local bitcoind while I have some using federation's bitcoind

[tasoshi]

Same problem here while working with local bitcoind: around 150% cpu usage on average.

[darosior]

Ok so it seems to be related to "full" nodes: https://docs.bisq.network/dao-technical-overview.html#full-nodes. It might be that we Bisq starts as a "full" node by default if it detects a bitcoind runnning ?

[chimp1984]

@darosior No by default a Bisq node runs a lite node. You need extra configurations to run a full DAO node. At startup it syncs with past DAO blocks, that can take a while if the app was not used for a while. After the DAO sync is done CPU should go back to normal.

[chimp1984]

@darosior Is your local bitcoind node running in pruned mode? If you use latest bitcoind release, you need to enable bloomfilter support.

[darosior]

After the DAO sync is done CPU should go back to normal.

I've used it for 3 months with CPU usage at 100%. With an approximate up time of 6 hours a day, I'd say it isn't due to initial sync. Moreover why would it take more CPU power with a local bitcoind

Is your local bitcoind node running in pruned mode?

nop

f you use latest bitcoind release, you need to enable bloomfilter support.

Will try, but why don't you use RPC for localhost's bitcoind ?

[chimp1984]

This is weird... Usually CPU is about 2-4% after initial sync. Seems some environments cause some issues. Can you post info about your setup (OS, ram,...)? Do you run inside a VM?

[darosior]

Will edit with a uname -a but I run a Debian Buster with a 4.19 Kernel. No VM.
Edit: 4.19.0-6-amd64 #1 SMP Debian 4.19.67-2+deb10u1 (2019-09-20) x86_64 GNU/Linux

@tasoshi above runs a Ubuntu Bionic (don't know his Kernel though). No VM.

We have different setups, and same symptoms.

[darosior]

Ok, that was the bloom filters apparently........ Thanks @chimp1984 !

[chimp1984]

@darosior Did you use latest bitcoind where bloom filters are not supported by default? Or otherwise can you specify what was the issue?