Does the benchmark tool actually write data to ETCD?

[wangwangwang23333]

Hi, I want to test and verify the overhead of etcd creating snapshots. To do this, I need to insert some data into etcd in advance. After I used benchmark to insert data, I found that the data was not actually in etcd. I am not sure if I did it wrong or if the benchmark itself did not insert data.
benchmark put --key-size=8 --sequential-keys --total=1000
etcdctl get "" --prefix # still empty
If not, is there a way to verify the overhead of etcd creating snapshots? I am not sure about the impact of ETCD creating snapshots on writing and reading.

[jmhbnz]

Hey @wangwangwang23333 - Thanks for your question, yes the benchmark tool does insert data into etcd, refer to discussion in #17105 for how to introspect any keys created by the benchmark utility.

You can run etcdctl endpoint status -w json to see the database size in use incrementing as you run the benchmark utility.