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From: Ingo Molnar <mingo@kernel.org>
To: Dmitry Vyukov <dvyukov@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
	Wang Nan <wangnan0@huawei.com>, Ingo Molnar <mingo@redhat.com>,
	LKML <linux-kernel@vger.kernel.org>,
	He Kuang <hekuang@huawei.com>,
	Alexei Starovoitov <ast@kernel.org>,
	Arnaldo Carvalho de Melo <acme@redhat.com>,
	Brendan Gregg <brendan.d.gregg@gmail.com>,
	Jiri Olsa <jolsa@kernel.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
	Namhyung Kim <namhyung@kernel.org>, Zefan Li <lizefan@huawei.com>,
	pi3orama@163.com
Subject: Re: [RESEND PATCH 0/5] perf core: Support overwrite ring buffer
Date: Tue, 8 Mar 2016 17:48:59 +0100	[thread overview]
Message-ID: <20160308164859.GA27516@gmail.com> (raw)
In-Reply-To: <20160308164438.GA24109@gmail.com>


* 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

  reply	other threads:[~2016-03-08 16:49 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-07  3:50 [RESEND PATCH 0/5] perf core: Support overwrite ring buffer Wang Nan
2016-03-07  3:50 ` [RESEND PATCH 1/5] perf core: Introduce new ioctl options to pause and resume " Wang Nan
2016-03-07  3:50 ` [RESEND PATCH 2/5] perf core: Set event's default overflow_handler Wang Nan
2016-03-07  3:50 ` [RESEND PATCH 3/5] perf core: Prepare writing into ring buffer from end Wang Nan
2016-03-07  3:50 ` [RESEND PATCH 4/5] perf core: Add backward attribute to perf event Wang Nan
2016-03-07  3:50 ` [RESEND PATCH 5/5] perf core: Reduce perf event output overhead by new overflow handler Wang Nan
2016-03-08 13:44 ` [RESEND PATCH 0/5] perf core: Support overwrite ring buffer Peter Zijlstra
2016-03-08 13:49   ` Ingo Molnar
2016-03-08 13:57     ` Peter Zijlstra
2016-03-08 15:29       ` Ingo Molnar
2016-03-08 15:35         ` Dmitry Vyukov
2016-03-08 15:54           ` Ingo Molnar
2016-03-08 16:11             ` Dmitry Vyukov
2016-03-08 16:27               ` Ingo Molnar
2016-03-08 16:29                 ` Dmitry Vyukov
2016-03-08 16:32                   ` Peter Zijlstra
2016-03-08 16:44                   ` Ingo Molnar
2016-03-08 16:48                     ` Ingo Molnar [this message]
2016-03-08 16:59                       ` Dmitry Vyukov
2016-03-08 17:24                         ` Ingo Molnar
2016-03-08 17:27                           ` Dmitry Vyukov
2016-03-08 17:37                             ` Ingo Molnar
2016-03-08 17:41                               ` Dmitry Vyukov
2016-03-08 17:48                                 ` Ingo Molnar
2016-03-08 17:56                                   ` Dmitry Vyukov
2016-03-08 17:56                                   ` Peter Zijlstra
2016-03-08 17:57                                   ` Ingo Molnar
2016-03-08 18:02                                     ` Ingo Molnar
2016-03-08 18:22                                       ` Ingo Molnar
2016-03-08 18:31                                         ` Ingo Molnar
2016-03-08 17:55                               ` Peter Zijlstra
2016-03-08 16:30                 ` Peter Zijlstra
2016-03-09 10:53             ` Borislav Petkov
2016-03-09 11:19               ` Dmitry Vyukov
2016-03-08 19:56       ` Jiri Olsa
2016-03-08 20:07         ` Peter Zijlstra
2016-03-08 20:44           ` Jiri Olsa
2016-03-08 21:04             ` Peter Zijlstra

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