Re: [RESEND PATCH 0/5] perf core: Support overwrite ring buffer

Ingo Molnar
2016-03-08T16:49:14Z

* Ingo Molnar <mingo@kernel.org> wrote:

> It only had a couple of seconds of runtime:
>
> 49652 mingo 20 0 1434276 52144 11344 S 0.0 0.0 0:00.54 syz-manager
> 49661 mingo 20 0 2196672 43948 10448 S 0.0 0.0 0:05.59 syz-fuzzer

Ah, so it appears to making some progress:

49652 mingo 20 0 1581740 47600 11344 S 0.0 0.0 0:00.58 syz-manager
49661 mingo 20 0 2204868 43720 10448 S 0.0 0.0 0:07.49 syz-fuzzer

49652 mingo 20 0 1598132 31512 11344 S 0.0 0.0 0:00.61 syz-manager
49661 mingo 20 0 2204868 44252 10448 S 0.0 0.0 0:09.09 syz-fuzzer

but only about +1 second runtime added every minute or so. Is that expected?

There's no progress mark anywhere suggesting that the tool thinks it is going
fine. You might want to emit periodic (once a minute or so) 'I am still OK!'
messages or so.

Thanks,

Ingo