```
bitcoind -par=1
```

Excerpt from the `debug.log`:

```
Using 0 threads for script verification
```

Zero? I guess not ;)
fFeeEstimatesInitialized = false;
    }
    
    
    
    
    {
        LOCK(cs_main);
        if (g_chainstate && g_chainstate->CanFlushToDisk()) {
            g_chainstate->ForceFlushStateToDisk();
        }
    }
    
    
    GetMainSignals().FlushBackgroundCallbacks();
    
    
    
    
    
    {
        LOCK(cs_main);
        if (g_chainstate && g_chainstate->CanFlushToDisk()) {
            g_chainstate->ForceFlushStateToDisk();
            g_chainstate->ResetCoinsViews();
        }
        pblocktree.reset();
    }
    for (const auto& client : node.chain_clients) {
        client->stop();