Use pulsar-admin:

```
bin/pulsar-admin topics list public/default  4.63s user 0.26s system 211% cpu 
2.309 total
```

Use pulsarctl:

```
./pulsarctl topics list public/default  0.01s user 0.01s system 34% cpu 0.079 
total
```

This is so fast.

> 在 2019年10月28日,下午6:29,Yong Zhang <zhangyong1025...@gmail.com> 写道:
> 
> Hi Pulsar community,
> 
> We just open sourced a Pulsar go admin client library and a CLI tool 
> `pulsarctl` built on top of it. If you are writing Golong applications to 
> interact with Pulsar, definitely check this out! 
> 
> https://github.com/streamnative/pulsarctl
> 
> pulsarctl command reference:  https://streamnative.io/docs/pulsarctl/v0.1.0/
> 
> If you have any questions, feel free to ping us!  Contributions are welcome!
> 
> Thanks,
> 
> 
> —
> 
> Yong,
> Best Regard,

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