Run a reindex with tracing enabled and with a small dbcache (to trigger frequent flushes):
```
cmake -GNinja .. -DENABLE_TRACING=ON
ninja
./src/bitcoind -daemon -dbcache=100 -reindex -datadir=/data0/ecashd_test
sudo ../contrib/tracing/log_utxocache_flush.py ./src/bitcoind
sudo bpftrace ../contrib/tracing/log_utxos.bt
```